diff --git a/internal/loki/backend_models.go b/internal/loki/backend_models.go
index e226007..601fd35 100644
--- a/internal/loki/backend_models.go
+++ b/internal/loki/backend_models.go
@@ -282,10 +282,96 @@ type dlState struct {
 	Part      int    `json:"part"`  // tranche en cours (1-based)
 	Finished  bool   `json:"finished"`
 	Canceled  bool   `json:"canceled"`
+	Paused    bool   `json:"paused"`
 	Err       string `json:"error"`
 	StartedAt int64  `json:"started_at"`
 
 	cancel context.CancelFunc `json:"-"` // set while in flight, cleared on finish
+	gate   *dlGate            `json:"-"`
+}
+
+// dlGate met un téléchargement en pause (repris d'AJEAN v0.18.1) : les
+// connexions en cours sont coupées (rien ne reste ouvert vers le CDN pendant la
+// pause), et chaque morceau attend la reprise puis repart de l'octet où il
+// s'était arrêté, par une requête de plage.
+type dlGate struct {
+	mu      sync.Mutex
+	paused  bool
+	wake    chan struct{}              // fermé à la reprise
+	attempt map[int]context.CancelFunc // requêtes en cours, coupées par la pause
+	next    int
+}
+
+func newDlGate() *dlGate { return &dlGate{attempt: map[int]context.CancelFunc{}} }
+
+func (g *dlGate) setPaused(p bool) {
+	if g == nil {
+		return
+	}
+	g.mu.Lock()
+	defer g.mu.Unlock()
+	if p == g.paused {
+		return
+	}
+	g.paused = p
+	if p {
+		g.wake = make(chan struct{})
+		for _, c := range g.attempt {
+			c()
+		}
+		return
+	}
+	close(g.wake)
+}
+
+// wait bloque tant que le téléchargement est en pause. false = annulé entre-temps.
+func (g *dlGate) wait(ctx context.Context) bool {
+	if g == nil {
+		return ctx.Err() == nil
+	}
+	g.mu.Lock()
+	paused, wake := g.paused, g.wake
+	g.mu.Unlock()
+	if !paused {
+		return ctx.Err() == nil
+	}
+	select {
+	case <-wake:
+		return ctx.Err() == nil
+	case <-ctx.Done():
+		return false
+	}
+}
+
+func (g *dlGate) isPaused() bool {
+	if g == nil {
+		return false
+	}
+	g.mu.Lock()
+	defer g.mu.Unlock()
+	return g.paused
+}
+
+// begin ouvre une requête que la pause pourra couper ; la fonction rendue la referme.
+func (g *dlGate) begin(ctx context.Context) (context.Context, func()) {
+	if g == nil {
+		return ctx, func() {}
+	}
+	actx, cancel := context.WithCancel(ctx)
+	g.mu.Lock()
+	id := g.next
+	g.next++
+	g.attempt[id] = cancel
+	if g.paused {
+		cancel() // pause tombée entre wait et begin
+	}
+	g.mu.Unlock()
+	return actx, func() {
+		g.mu.Lock()
+		delete(g.attempt, id)
+		g.mu.Unlock()
+		cancel()
+	}
 }
 
 var (
@@ -429,7 +515,7 @@ func handleModelDownload(w http.ResponseWriter, r *http.Request) {
 	ctx, cancel := context.WithCancel(context.Background())
 	st := &dlState{
 		Filename: name, URL: urls[0], Dir: filepath.Dir(dests[0]),
-		Parts: len(todoURLs), StartedAt: time.Now().Unix(), cancel: cancel,
+		Parts: len(todoURLs), StartedAt: time.Now().Unix(), cancel: cancel, gate: newDlGate(),
 	}
 	dlDownloads[name] = st
 	dlMu.Unlock()
@@ -759,7 +845,9 @@ func runDownloadSet(ctx context.Context, st *dlState, urls, dests []string) {
 				dt := now.Sub(lastAt).Seconds()
 				dlMu.Lock()
 				st.Done = cur
-				if dt > 0 {
+				if st.Paused {
+					st.Speed = 0
+				} else if dt > 0 {
 					inst := int64(float64(cur-last) / dt)
 					if st.Speed == 0 {
 						st.Speed = inst
@@ -827,7 +915,7 @@ func dlOnePart(ctx context.Context, st *dlState, dlURL, dest string, total int64
 			return err
 		}
 	}
-	if err := dlFetch(ctx, f, dlURL, total, conns, done); err != nil {
+	if err := dlFetch(ctx, st.gate, f, dlURL, total, conns, done); err != nil {
 		f.Close()
 		_ = os.Remove(tmp)
 		return err
@@ -845,9 +933,9 @@ func dlOnePart(ctx context.Context, st *dlState, dlURL, dest string, total int64
 
 // dlFetch writes the whole body into f, either as one stream or as `conns`
 // parallel byte ranges. done is incremented atomically as bytes land on disk.
-func dlFetch(ctx context.Context, f *os.File, dlURL string, total int64, conns int, done *int64) error {
+func dlFetch(ctx context.Context, g *dlGate, f *os.File, dlURL string, total int64, conns int, done *int64) error {
 	if conns <= 1 {
-		return dlChunk(ctx, f, dlURL, 0, total-1, total <= 0, done)
+		return dlChunk(ctx, g, f, dlURL, 0, total-1, total <= 0, done)
 	}
 	size := total / int64(conns)
 	var wg sync.WaitGroup
@@ -861,7 +949,7 @@ func dlFetch(ctx context.Context, f *os.File, dlURL string, total int64, conns i
 		wg.Add(1)
 		go func(i int, start, end int64) {
 			defer wg.Done()
-			errs[i] = dlChunk(ctx, f, dlURL, start, end, false, done)
+			errs[i] = dlChunk(ctx, g, f, dlURL, start, end, false, done)
 		}(i, start, end)
 	}
 	wg.Wait()
@@ -876,11 +964,15 @@ func dlFetch(ctx context.Context, f *os.File, dlURL string, total int64, conns i
 // dlChunk downloads [start,end] into f at the right offset, retrying from where
 // it stopped if the connection drops mid-chunk. With whole=true it streams the
 // entire body sequentially (server without range support, unknown size).
-func dlChunk(ctx context.Context, f *os.File, dlURL string, start, end int64, whole bool, done *int64) error {
+func dlChunk(ctx context.Context, g *dlGate, f *os.File, dlURL string, start, end int64, whole bool, done *int64) error {
 	const attempts = 4
 	pos := start
 	var lastErr error
 	for try := 0; try < attempts; try++ {
+		// Une pause n'est pas un échec : on attend la reprise sans consommer d'essai.
+		if !g.wait(ctx) {
+			return ctx.Err()
+		}
 		if err := ctx.Err(); err != nil {
 			return err // cancelled: never retry
 		}
@@ -900,18 +992,26 @@ func dlChunk(ctx context.Context, f *os.File, dlURL string, start, end int64, wh
 		} else if pos > start {
 			rng = fmt.Sprintf("bytes=%d-", pos) // best-effort resume
 		}
-		req, err := dlRequest(ctx, dlURL, rng)
+		actx, release := g.begin(ctx)
+		req, err := dlRequest(actx, dlURL, rng)
 		if err != nil {
+			release()
 			return err
 		}
 		resp, err := dlClient.Do(req)
 		if err != nil {
+			release()
+			if g.isPaused() && ctx.Err() == nil {
+				try--
+				continue
+			}
 			lastErr = err
 			continue
 		}
 		if resp.StatusCode != 200 && resp.StatusCode != 206 {
 			err := dlSourceError(resp, dlURL)
 			resp.Body.Close()
+			release()
 			return err
 		}
 		if resp.StatusCode == 200 && pos > start {
@@ -921,10 +1021,15 @@ func dlChunk(ctx context.Context, f *os.File, dlURL string, start, end int64, wh
 		}
 		n, cerr := dlCopy(f, resp.Body, pos, done)
 		resp.Body.Close()
+		release()
 		pos += n
 		if cerr == nil {
 			return nil
 		}
+		if g.isPaused() && ctx.Err() == nil {
+			try-- // coupé par la pause : la reprise repart de pos
+			continue
+		}
 		lastErr = cerr
 	}
 	return lastErr
@@ -981,6 +1086,35 @@ func handleModelDownloadCancel(w http.ResponseWriter, r *http.Request) {
 	sendJSON(w, 200, map[string]any{"ok": true})
 }
 
+// handleModelDownloadPause met en pause ({"pause":true}) ou reprend
+// ({"pause":false}) un téléchargement en cours. Le fichier partiel est gardé.
+func handleModelDownloadPause(w http.ResponseWriter, r *http.Request) {
+	var req struct {
+		Filename string `json:"filename"`
+		Pause    bool   `json:"pause"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		sendJSON(w, 400, map[string]any{"ok": false, "error": err.Error()})
+		return
+	}
+	name := filepath.Base(strings.TrimSpace(req.Filename))
+	dlMu.Lock()
+	st, ok := dlDownloads[name]
+	if !ok || st.Finished {
+		dlMu.Unlock()
+		sendJSON(w, 404, map[string]any{"ok": false, "error": "aucun téléchargement en cours pour " + name})
+		return
+	}
+	st.Paused = req.Pause
+	if req.Pause {
+		st.Speed = 0
+	}
+	g := st.gate
+	dlMu.Unlock()
+	g.setPaused(req.Pause)
+	sendJSON(w, 200, map[string]any{"ok": true, "paused": req.Pause})
+}
+
 // cleanStalePartFiles removes leftover *.gguf.part files in every model dir at
 // startup. A download killed by a crash or a service restart can't be resumed
 // (its state lived in memory), so the partial file would otherwise sit there
diff --git a/internal/loki/backend_models_dl_test.go b/internal/loki/backend_models_dl_test.go
index 6f6a8c2..7de5107 100644
--- a/internal/loki/backend_models_dl_test.go
+++ b/internal/loki/backend_models_dl_test.go
@@ -231,3 +231,96 @@ func TestDLProbeSurfacesExplainedError(t *testing.T) {
 		t.Errorf("message %q sans indication sur le jeton", err)
 	}
 }
+
+type slowWriter struct{ http.ResponseWriter }
+
+func (s slowWriter) Write(b []byte) (int, error) {
+	time.Sleep(2 * time.Millisecond)
+	return s.ResponseWriter.Write(b)
+}
+
+// Une pause coupe le flux, garde ce qui est écrit, et la reprise termine un
+// fichier identique à la source (repris d'AJEAN v0.18.1).
+func TestRunDownloadPauseResume(t *testing.T) {
+	data := make([]byte, 48<<20)
+	rand.New(rand.NewSource(2)).Read(data)
+	t.Setenv("LOKI_DL_CONNS", "4")
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		http.ServeContent(slowWriter{w}, r, "m.gguf", time.Time{}, bytes.NewReader(data))
+	}))
+	defer srv.Close()
+
+	dest := filepath.Join(t.TempDir(), "m.gguf")
+	st := &dlState{Filename: "m.gguf", gate: newDlGate()}
+	done := make(chan struct{})
+	go func() {
+		runDownloadSet(context.Background(), st, []string{srv.URL + "/m.gguf"}, []string{dest})
+		close(done)
+	}()
+
+	time.Sleep(300 * time.Millisecond)
+	st.gate.setPaused(true)
+	time.Sleep(1500 * time.Millisecond) // le compteur publié se fige
+	dlMu.Lock()
+	a := st.Done
+	dlMu.Unlock()
+	time.Sleep(1500 * time.Millisecond)
+	dlMu.Lock()
+	b, fin := st.Done, st.Finished
+	dlMu.Unlock()
+	if fin || a != b || a == 0 {
+		t.Fatalf("pause inopérante : %d puis %d octets, terminé=%v", a, b, fin)
+	}
+	st.gate.setPaused(false)
+	select {
+	case <-done:
+	case <-time.After(30 * time.Second):
+		t.Fatal("pas terminé après la reprise")
+	}
+	if st.Err != "" {
+		t.Fatalf("erreur après reprise : %s", st.Err)
+	}
+	got, err := os.ReadFile(dest)
+	if err != nil || !bytes.Equal(got, data) {
+		t.Fatalf("fichier différent de la source après reprise (err=%v)", err)
+	}
+}
+
+// La route : pause puis reprise d'un téléchargement connu, refus pour
+// l'inconnu et pour un téléchargement terminé.
+func TestHandleModelDownloadPause(t *testing.T) {
+	dlMu.Lock()
+	saved := dlDownloads
+	dlDownloads = map[string]*dlState{
+		"a.gguf": {Filename: "a.gguf", Speed: 9, gate: newDlGate()},
+		"b.gguf": {Filename: "b.gguf", Finished: true},
+	}
+	dlMu.Unlock()
+	t.Cleanup(func() { dlMu.Lock(); dlDownloads = saved; dlMu.Unlock() })
+	post := func(body string) (int, string) {
+		w := httptest.NewRecorder()
+		handleModelDownloadPause(w, httptest.NewRequest("POST", "/api/models/download/pause", strings.NewReader(body)))
+		return w.Code, strings.TrimSpace(w.Body.String())
+	}
+	if code, out := post(`{"filename":"../a.gguf","pause":true}`); code != 200 || out != `{"ok":true,"paused":true}` {
+		t.Fatalf("pause : %d %s", code, out)
+	}
+	dlMu.Lock()
+	st := dlDownloads["a.gguf"]
+	paused, speed := st.Paused, st.Speed
+	dlMu.Unlock()
+	if !paused || speed != 0 || !st.gate.isPaused() {
+		t.Errorf("état après pause : paused=%v speed=%d porte=%v", paused, speed, st.gate.isPaused())
+	}
+	if code, out := post(`{"filename":"a.gguf","pause":false}`); code != 200 || out != `{"ok":true,"paused":false}` || st.gate.isPaused() {
+		t.Fatalf("reprise : %d %s", code, out)
+	}
+	for _, body := range []string{`{"filename":"b.gguf","pause":true}`, `{"filename":"x.gguf","pause":true}`} {
+		if code, _ := post(body); code != 404 {
+			t.Errorf("%s : %d, attendu 404", body, code)
+		}
+	}
+	if code, _ := post(`[`); code != 400 {
+		t.Errorf("corps illisible : %d", code)
+	}
+}
diff --git a/internal/loki/facade_chat_test.go b/internal/loki/facade_chat_test.go
index 184110c..31a692c 100644
--- a/internal/loki/facade_chat_test.go
+++ b/internal/loki/facade_chat_test.go
@@ -300,7 +300,7 @@ func TestFacadeRelaieLesModeles(t *testing.T) {
 	local := func(w http.ResponseWriter, r *http.Request) { io.WriteString(w, "go") }
 
 	routes := []string{"/api/models/download", "/api/models/download/probe",
-		"/api/models/download/status", "/api/models/download/cancel", "/api/models",
+		"/api/models/download/status", "/api/models/download/cancel", "/api/models/download/pause", "/api/models",
 		"/api/models/delete", "/api/models/dirs", "/api/hf/search", "/api/hf/files", "/api/hf/token"}
 	for _, p := range routes {
 		w := httptest.NewRecorder()
diff --git a/internal/loki/facade_models.go b/internal/loki/facade_models.go
index 8c0f776..ef6c54e 100644
--- a/internal/loki/facade_models.go
+++ b/internal/loki/facade_models.go
@@ -49,4 +49,5 @@ var facadeModelRoutes = map[string]bool{
 	"/api/models/download/probe":  true,
 	"/api/models/download/status": true,
 	"/api/models/download/cancel": true,
+	"/api/models/download/pause":  true,
 }
diff --git a/internal/loki/ui/index.html b/internal/loki/ui/index.html
index 872336f..ab81304 100644
--- a/internal/loki/ui/index.html
+++ b/internal/loki/ui/index.html
@@ -3500,6 +3500,7 @@ html[data-files="1"] #files-btn{color:var(--accent)}
               </div>
               <div id="m-hf-bar" class="pe-bar" style="display:none"><i></i></div>
               <div id="m-hf-progress" class="pe-note" style="display:none"></div>
+              <button id="m-hf-pause" class="pe-link" onclick="togglePauseDownload()" style="display:none">Mettre en pause</button>
               <button id="m-hf-cancel" class="pe-link" onclick="cancelDownload()" style="display:none">Annuler le téléchargement</button>
             </div>
             <div class="pe-row">
@@ -6754,6 +6755,7 @@ function dlEls(){
     prog: document.getElementById('m-hf-progress'),
     bar:  document.getElementById('m-hf-bar'),
     cancel: document.getElementById('m-hf-cancel'),
+    pause: document.getElementById('m-hf-pause'),
   };
 }
 // Arrête le poll local sans toucher au téléchargement serveur.
@@ -6763,7 +6765,7 @@ function resetDlUI(){
   const e = dlEls();
   stopDlPoll(); dlName='';
   e.prog.style.display='none'; e.bar.style.display='none';
-  e.cancel.style.display='none'; e.btn.disabled=false;
+  e.cancel.style.display='none'; e.pause.style.display='none'; e.btn.disabled=false;
 }
 // Remplit le sélecteur de destination avec les dossiers de modèles connus.
 // L'espace libre est dans le libellé de l'option : c'est l'info utile au moment
@@ -6880,6 +6882,22 @@ async function cancelDownload(){
   await jpost('/api/models/download/cancel', {filename: dlName});
   // L'état « annulé » est confirmé par le prochain tick de poll.
 }
+// Met en pause ou reprend : le fichier partiel est gardé, la reprise repart
+// de là où le transfert s'était arrêté (repris d'AJEAN v0.18.1).
+let dlPaused = false;
+async function togglePauseDownload(){
+  if(!dlName) return;
+  const e = dlEls();
+  e.pause.disabled = true;
+  try{
+    const r = await jpost('/api/models/download/pause', {filename: dlName, pause: !dlPaused});
+    if(r.ok) setDlPaused(r.paused);
+  }finally{ e.pause.disabled = false; }
+}
+function setDlPaused(p){
+  dlPaused = !!p;
+  dlEls().pause.textContent = dlPaused ? 'Reprendre' : 'Mettre en pause';
+}
 // Suit un téléchargement (nouveau ou déjà en cours) et pilote barre + texte.
 function watchDownload(fname){
   const e = dlEls();
@@ -6890,7 +6908,10 @@ function watchDownload(fname){
   e.bar.style.display = 'block';
   e.cancel.style.display = 'inline';
   e.cancel.disabled = false;
-  const stop = ()=>{ stopDlPoll(); dlName=''; e.btn.disabled=false; e.cancel.style.display='none'; };
+  e.pause.style.display = 'inline';
+  e.pause.disabled = false;
+  setDlPaused(false);
+  const stop = ()=>{ stopDlPoll(); dlName=''; e.btn.disabled=false; e.cancel.style.display='none'; e.pause.style.display='none'; };
   const tick = async ()=>{
     const list = await jget('/api/models/download/status');
     const st = (list||[]).find(d=>d.filename===fname);
@@ -6914,6 +6935,7 @@ function watchDownload(fname){
       if(dlQueue.length) startDownloadURL(dlQueue.shift());
       return;
     }
+    if(!!st.paused !== dlPaused) setDlPaused(st.paused);
     const pct = st.total>0 ? st.done*100/st.total : 0;
     if(st.total>0){
       e.bar.className = 'pe-bar';
@@ -6923,7 +6945,8 @@ function watchDownload(fname){
     }
     const tot = st.total>0 ? ' / '+fmtSize(st.total)+' ('+Math.round(pct)+'%)' : '';
     let extra = '';
-    if(st.speed>0){
+    if(st.paused) extra += ' — en pause';
+    else if(st.speed>0){
       extra += ' — '+fmtSize(st.speed)+'/s';
       if(st.total>0){
         const eta = Math.max(0, Math.round((st.total-st.done)/st.speed));
diff --git a/internal/loki/ui/src/index.tmpl.html b/internal/loki/ui/src/index.tmpl.html
index e405561..91dc1a7 100644
--- a/internal/loki/ui/src/index.tmpl.html
+++ b/internal/loki/ui/src/index.tmpl.html
@@ -1215,6 +1215,7 @@ document.documentElement.setAttribute('data-side',localStorage.getItem('loki-sid
               </div>
               <div id="m-hf-bar" class="pe-bar" style="display:none"><i></i></div>
               <div id="m-hf-progress" class="pe-note" style="display:none"></div>
+              <button id="m-hf-pause" class="pe-link" onclick="togglePauseDownload()" style="display:none">Mettre en pause</button>
               <button id="m-hf-cancel" class="pe-link" onclick="cancelDownload()" style="display:none">Annuler le téléchargement</button>
             </div>
             <div class="pe-row">
diff --git a/internal/loki/ui/src/js/07-models.js b/internal/loki/ui/src/js/07-models.js
index 538a025..500d589 100644
--- a/internal/loki/ui/src/js/07-models.js
+++ b/internal/loki/ui/src/js/07-models.js
@@ -1501,6 +1501,7 @@ function dlEls(){
     prog: document.getElementById('m-hf-progress'),
     bar:  document.getElementById('m-hf-bar'),
     cancel: document.getElementById('m-hf-cancel'),
+    pause: document.getElementById('m-hf-pause'),
   };
 }
 // Arrête le poll local sans toucher au téléchargement serveur.
@@ -1510,7 +1511,7 @@ function resetDlUI(){
   const e = dlEls();
   stopDlPoll(); dlName='';
   e.prog.style.display='none'; e.bar.style.display='none';
-  e.cancel.style.display='none'; e.btn.disabled=false;
+  e.cancel.style.display='none'; e.pause.style.display='none'; e.btn.disabled=false;
 }
 // Remplit le sélecteur de destination avec les dossiers de modèles connus.
 // L'espace libre est dans le libellé de l'option : c'est l'info utile au moment
@@ -1627,6 +1628,22 @@ async function cancelDownload(){
   await jpost('/api/models/download/cancel', {filename: dlName});
   // L'état « annulé » est confirmé par le prochain tick de poll.
 }
+// Met en pause ou reprend : le fichier partiel est gardé, la reprise repart
+// de là où le transfert s'était arrêté (repris d'AJEAN v0.18.1).
+let dlPaused = false;
+async function togglePauseDownload(){
+  if(!dlName) return;
+  const e = dlEls();
+  e.pause.disabled = true;
+  try{
+    const r = await jpost('/api/models/download/pause', {filename: dlName, pause: !dlPaused});
+    if(r.ok) setDlPaused(r.paused);
+  }finally{ e.pause.disabled = false; }
+}
+function setDlPaused(p){
+  dlPaused = !!p;
+  dlEls().pause.textContent = dlPaused ? 'Reprendre' : 'Mettre en pause';
+}
 // Suit un téléchargement (nouveau ou déjà en cours) et pilote barre + texte.
 function watchDownload(fname){
   const e = dlEls();
@@ -1637,7 +1654,10 @@ function watchDownload(fname){
   e.bar.style.display = 'block';
   e.cancel.style.display = 'inline';
   e.cancel.disabled = false;
-  const stop = ()=>{ stopDlPoll(); dlName=''; e.btn.disabled=false; e.cancel.style.display='none'; };
+  e.pause.style.display = 'inline';
+  e.pause.disabled = false;
+  setDlPaused(false);
+  const stop = ()=>{ stopDlPoll(); dlName=''; e.btn.disabled=false; e.cancel.style.display='none'; e.pause.style.display='none'; };
   const tick = async ()=>{
     const list = await jget('/api/models/download/status');
     const st = (list||[]).find(d=>d.filename===fname);
@@ -1661,6 +1681,7 @@ function watchDownload(fname){
       if(dlQueue.length) startDownloadURL(dlQueue.shift());
       return;
     }
+    if(!!st.paused !== dlPaused) setDlPaused(st.paused);
     const pct = st.total>0 ? st.done*100/st.total : 0;
     if(st.total>0){
       e.bar.className = 'pe-bar';
@@ -1670,7 +1691,8 @@ function watchDownload(fname){
     }
     const tot = st.total>0 ? ' / '+fmtSize(st.total)+' ('+Math.round(pct)+'%)' : '';
     let extra = '';
-    if(st.speed>0){
+    if(st.paused) extra += ' — en pause';
+    else if(st.speed>0){
       extra += ' — '+fmtSize(st.speed)+'/s';
       if(st.total>0){
         const eta = Math.max(0, Math.round((st.total-st.done)/st.speed));
diff --git a/internal/loki/web_server.go b/internal/loki/web_server.go
index fd2a623..94aac50 100644
--- a/internal/loki/web_server.go
+++ b/internal/loki/web_server.go
@@ -259,6 +259,7 @@ func newWebMux() *http.ServeMux {
 	api("/api/models/download/probe", handleModelDownloadProbe) // taille + espace libre avant de lancer
 	api("/api/models/download/status", handleModelDownloadStatus)
 	api("/api/models/download/cancel", handleModelDownloadCancel)
+	api("/api/models/download/pause", handleModelDownloadPause)
 	api("/api/hf/search", handleHFSearch) // chercher un modèle GGUF sur Hugging Face
 	api("/api/hf/files", handleHFFiles)   // quants et projecteurs d'un dépôt
 	api("/api/hf/token", handleHFToken)   // jeton pour les dépôts à accès restreint
diff --git a/rust/loki-rs/src/downloads.rs b/rust/loki-rs/src/downloads.rs
index 44fe294..4b728a8 100644
--- a/rust/loki-rs/src/downloads.rs
+++ b/rust/loki-rs/src/downloads.rs
@@ -3,7 +3,7 @@
 //! `backend_model_dirs.go` et `backend_hf.go` (lot 8 de la migration).
 //!
 //! Tenus par la façade quand `LOKI_MODELS=rust` (expérimental ; le Go
-//! par défaut) : `POST /api/models/download`, `/probe`, `/cancel`,
+//! par défaut) : `POST /api/models/download`, `/probe`, `/cancel`, `/pause`,
 //! `GET /api/models/download/status`. Le Go remet alors à la façade ces
 //! routes quand elles lui arrivent par le tunnel du relais, et ne vide plus
 //! les `.part` au démarrage (c'est la façade qui le fait).
@@ -71,6 +71,7 @@ pub fn handles(path: &str) -> bool {
             | "/api/models/download/probe"
             | "/api/models/download/status"
             | "/api/models/download/cancel"
+            | "/api/models/download/pause"
     )
 }
 
@@ -519,6 +520,7 @@ pub struct DlState {
     pub part: i64,
     pub finished: bool,
     pub canceled: bool,
+    pub paused: bool,
     #[serde(rename = "error")]
     pub err: String,
     pub started_at: i64,
@@ -527,6 +529,8 @@ pub struct DlState {
 struct Entry {
     state: Mutex<DlState>,
     cancel: watch::Sender<bool>,
+    /// `dlGate` : vrai pendant une pause.
+    pause: watch::Sender<bool>,
 }
 
 impl Entry {
@@ -549,6 +553,37 @@ impl Stop {
     }
 }
 
+/// `dlGate` : la pause d'un téléchargement. Les requêtes en cours sont
+/// coupées (rien ne reste ouvert vers le CDN pendant la pause), et chaque
+/// morceau attend la reprise puis repart de l'octet où il s'était arrêté, par
+/// une requête de plage.
+#[derive(Clone)]
+struct Gate(watch::Receiver<bool>);
+
+impl Gate {
+    fn is_paused(&self) -> bool {
+        *self.0.borrow()
+    }
+    /// Attend la reprise ; `false` : annulé entre-temps.
+    async fn wait(&self, stop: &Stop) -> bool {
+        if self.is_paused() {
+            let mut rx = self.0.clone();
+            tokio::select! {
+                _ = rx.wait_for(|p| !*p) => {}
+                _ = stop.wait() => return false,
+            }
+        }
+        !stop.is_set()
+    }
+    /// Se résout quand la pause tombe (jamais si l'émetteur a disparu).
+    async fn paused(&self) {
+        let mut rx = self.0.clone();
+        if rx.wait_for(|p| *p).await.is_err() {
+            std::future::pending::<()>().await;
+        }
+    }
+}
+
 /// Ce qu'un téléchargement doit savoir de la machine.
 #[derive(Clone)]
 pub struct DlEnv {
@@ -615,6 +650,28 @@ impl Downloads {
         }
     }
 
+    /// `handleModelDownloadPause` : met en pause ou reprend ; `false` :
+    /// inconnu ou terminé. Le fichier partiel est gardé.
+    pub fn pause(&self, name: &str, paused: bool) -> bool {
+        let Some(e) = self.map().get(name).cloned() else {
+            return false;
+        };
+        let running = e.with(|s| {
+            if s.finished {
+                return false;
+            }
+            s.paused = paused;
+            if paused {
+                s.speed = 0;
+            }
+            true
+        });
+        if running {
+            let _ = e.pause.send_replace(paused);
+        }
+        running
+    }
+
     fn request(&self, env: &DlEnv, url: &str, range: Option<&str>) -> reqwest::RequestBuilder {
         let mut rb = self
             .client
@@ -722,6 +779,7 @@ impl Downloads {
             );
         }
         let (tx, rx) = watch::channel(false);
+        let (pause_tx, pause_rx) = watch::channel(false);
         let entry = Arc::new(Entry {
             state: Mutex::new(DlState {
                 filename: name.clone(),
@@ -732,12 +790,14 @@ impl Downloads {
                 ..Default::default()
             }),
             cancel: tx,
+            pause: pause_tx,
         });
         map.insert(name.clone(), entry.clone());
         drop(map);
         let parts = todo.len();
         let me = self.clone();
-        tokio::spawn(async move { me.run_set(env, entry, Stop(rx), todo).await });
+        let gate = Gate(pause_rx);
+        tokio::spawn(async move { me.run_set(env, entry, Stop(rx), gate, todo).await });
         (
             StatusCode::OK,
             json!({ "ok": true, "filename": name, "parts": parts }),
@@ -752,6 +812,7 @@ impl Downloads {
         env: DlEnv,
         entry: Arc<Entry>,
         stop: Stop,
+        gate: Gate,
         todo: Vec<(String, String)>,
     ) {
         let done = Arc::new(AtomicI64::new(0));
@@ -812,7 +873,9 @@ impl Downloads {
                     let dt = now.duration_since(last_at).as_secs_f64();
                     entry.with(|s| {
                         s.done = cur;
-                        if dt > 0.0 {
+                        if s.paused {
+                            s.speed = 0;
+                        } else if dt > 0.0 {
                             let inst = ((cur - last) as f64 / dt) as i64;
                             s.speed = if s.speed == 0 {
                                 inst
@@ -829,7 +892,7 @@ impl Downloads {
         for (i, ((u, dest), (total, ranged))) in todo.iter().zip(sizes).enumerate() {
             entry.with(|s| s.part = i as i64 + 1);
             if let Err(h) = self
-                .one_part(&env, &entry, &stop, u, dest, total, ranged, &done)
+                .one_part(&env, &entry, &stop, &gate, u, dest, total, ranged, &done)
                 .await
             {
                 ticker.abort();
@@ -851,6 +914,7 @@ impl Downloads {
         env: &DlEnv,
         entry: &Entry,
         stop: &Stop,
+        gate: &Gate,
         url: &str,
         dest: &str,
         total: i64,
@@ -877,7 +941,7 @@ impl Downloads {
             path: tmp.clone(),
         });
         let res = if conns <= 1 {
-            self.chunk(env, stop, &file, url, 0, total - 1, total <= 0, done)
+            self.chunk(env, stop, gate, &file, url, 0, total - 1, total <= 0, done)
                 .await
         } else {
             let size = total / conns as i64;
@@ -888,7 +952,7 @@ impl Downloads {
                 } else {
                     start + size - 1
                 };
-                self.chunk(env, stop, &file, url, start, end, false, done)
+                self.chunk(env, stop, gate, &file, url, start, end, false, done)
             });
             futures_util::future::join_all(parts)
                 .await
@@ -918,6 +982,7 @@ impl Downloads {
         &self,
         env: &DlEnv,
         stop: &Stop,
+        gate: &Gate,
         file: &Arc<PartFile>,
         url: &str,
         start: i64,
@@ -927,7 +992,13 @@ impl Downloads {
     ) -> Result<(), Halt> {
         let mut pos = start;
         let mut last_err = String::new();
-        for attempt in 0..DL_ATTEMPTS {
+        let mut attempt: u64 = 0;
+        while attempt < DL_ATTEMPTS {
+            // Une pause n'est pas un échec : on attend la reprise sans
+            // consommer d'essai.
+            if !gate.wait(stop).await {
+                return Err(Halt::Canceled);
+            }
             if stop.is_set() {
                 return Err(Halt::Canceled);
             }
@@ -948,13 +1019,16 @@ impl Downloads {
                 None
             };
             let resp = tokio::select! {
-                r = self.request(env, url, range.as_deref()).send() => r,
+                r = self.request(env, url, range.as_deref()).send() => r.map_err(|e| e.to_string()),
                 _ = stop.wait() => return Err(Halt::Canceled),
+                _ = gate.paused() => Err("en pause".to_string()),
             };
             let resp = match resp {
                 Ok(r) => r,
+                Err(_) if gate.is_paused() && !stop.is_set() => continue,
                 Err(e) => {
-                    last_err = e.to_string();
+                    last_err = e;
+                    attempt += 1;
                     continue;
                 }
             };
@@ -967,7 +1041,7 @@ impl Downloads {
                 done.fetch_add(start - pos, Ordering::Relaxed);
                 pos = start;
             }
-            match copy_at(stop, file, resp, pos, done).await {
+            match copy_at(stop, gate, file, resp, pos, done).await {
                 (n, Ok(())) => {
                     let _ = n;
                     return Ok(());
@@ -975,7 +1049,12 @@ impl Downloads {
                 (_, Err(Halt::Canceled)) => return Err(Halt::Canceled),
                 (n, Err(Halt::Err(e))) => {
                     pos += n;
+                    // coupé par la pause : la reprise repart de pos
+                    if gate.is_paused() && !stop.is_set() {
+                        continue;
+                    }
                     last_err = e;
+                    attempt += 1;
                 }
             }
         }
@@ -987,6 +1066,7 @@ impl Downloads {
 /// même en cas d'erreur (pour reprendre).
 async fn copy_at(
     stop: &Stop,
+    gate: &Gate,
     file: &Arc<PartFile>,
     resp: reqwest::Response,
     off: i64,
@@ -999,6 +1079,17 @@ async fn copy_at(
         let next = tokio::select! {
             n = stream.next() => n,
             _ = stop.wait() => return (written, Err(Halt::Canceled)),
+            _ = gate.paused() => {
+                // pause : ce qui est reçu est écrit, le flux est coupé
+                return match flush(file, &mut buf, off + written).await {
+                    Ok(k) => {
+                        written += k;
+                        done.fetch_add(k, Ordering::Relaxed);
+                        (written, Err(Halt::Err("en pause".into())))
+                    }
+                    Err(we) => (written, Err(Halt::Err(we))),
+                };
+            }
         };
         let eof = next.is_none();
         match next {
@@ -1186,6 +1277,22 @@ pub async fn serve(
                 )
             }
         }
+        "/api/models/download/pause" => {
+            let v = match body_json(body).await {
+                Ok(v) => v,
+                Err(e) => return bad(e),
+            };
+            let name = filepath_base(str_of(&v, "filename").trim());
+            let paused = v.get("pause").and_then(Value::as_bool).unwrap_or(false);
+            if dl.pause(&name, paused) {
+                send_json(StatusCode::OK, &json!({ "ok": true, "paused": paused }))
+            } else {
+                send_json(
+                    StatusCode::NOT_FOUND,
+                    &json!({ "ok": false, "error": format!("aucun téléchargement en cours pour {name}") }),
+                )
+            }
+        }
         "/api/models/download" => {
             let v = match body_json(body).await {
                 Ok(v) => v,
diff --git a/rust/loki-rs/tests/downloads.rs b/rust/loki-rs/tests/downloads.rs
index bf1f7cd..09b6a91 100644
--- a/rust/loki-rs/tests/downloads.rs
+++ b/rust/loki-rs/tests/downloads.rs
@@ -260,6 +260,13 @@ async fn wait_finished(dl: &Downloads, name: &str) -> DlState {
     panic!("téléchargement {name} jamais terminé : {:?}", dl.status());
 }
 
+fn state_of(dl: &Downloads, name: &str) -> DlState {
+    dl.status()
+        .into_iter()
+        .find(|s| s.filename == name)
+        .unwrap()
+}
+
 fn models(home: &Path) -> PathBuf {
     home.join("models")
 }
@@ -537,6 +544,58 @@ async fn annulation_efface_le_part() {
     assert_eq!(entries(&models(tmp.path())), Vec::<String>::new());
 }
 
+// `TestRunDownloadPauseResume` : la pause coupe le flux et garde ce qui est
+// écrit ; la reprise repart de là par une plage et termine un fichier
+// identique à la source.
+#[tokio::test]
+async fn pause_puis_reprise() {
+    let (addr, hf) = fake_hf().await;
+    let data = payload(8 << 20, 5);
+    hf.files
+        .lock()
+        .unwrap()
+        .insert("/m.gguf".into(), Arc::new(data.clone()));
+    *hf.slow.lock().unwrap() = true;
+    let tmp = tempfile::tempdir().unwrap();
+    let dl = Arc::new(Downloads::new());
+    let (code, _) = dl.start(
+        env(),
+        &dirs_at(tmp.path()),
+        &format!("http://{addr}/m.gguf"),
+        "",
+    );
+    assert_eq!(code, StatusCode::OK);
+    assert!(!dl.pause("autre.gguf", true));
+    tokio::time::sleep(Duration::from_millis(300)).await;
+    assert!(dl.pause("m.gguf", true));
+    tokio::time::sleep(Duration::from_millis(1500)).await;
+    let a = state_of(&dl, "m.gguf");
+    tokio::time::sleep(Duration::from_millis(1500)).await;
+    let b = state_of(&dl, "m.gguf");
+    assert!(
+        a.paused && !b.finished && a.done == b.done && a.done > 0 && b.speed == 0,
+        "pause inopérante : {a:?} puis {b:?}"
+    );
+    let before = hf.log.lock().unwrap().len();
+    assert!(dl.pause("m.gguf", false));
+    let end = wait_finished(&dl, "m.gguf").await;
+    assert!(
+        end.err.is_empty() && !end.canceled && !end.paused,
+        "{end:?}"
+    );
+    let got = std::fs::read(models(tmp.path()).join("m.gguf")).unwrap();
+    assert!(got == data, "fichier différent de la source après reprise");
+    // La reprise demande la suite, pas le début.
+    let log = hf.log.lock().unwrap().clone();
+    let resumed = log[before..]
+        .iter()
+        .filter_map(|l| l.strip_prefix("/m.gguf bytes="))
+        .any(|r| !r.starts_with("0-"));
+    assert!(resumed, "{log:?}");
+    // Terminé : plus rien à mettre en pause.
+    assert!(!dl.pause("m.gguf", true));
+}
+
 #[tokio::test]
 async fn refus_avant_de_lancer() {
     let tmp = tempfile::tempdir().unwrap();
diff --git a/rust/loki-rs/tests/parity_bench/bench.json b/rust/loki-rs/tests/parity_bench/bench.json
index 107d753..fd87ee9 100644
--- a/rust/loki-rs/tests/parity_bench/bench.json
+++ b/rust/loki-rs/tests/parity_bench/bench.json
@@ -231,8 +231,8 @@
           "predicted_ms": 6000,
           "predicted_n": 300,
           "predicted_per_second": 50,
-          "prompt_ms": 1014.5,
-          "prompt_n": 2029,
+          "prompt_ms": 1020,
+          "prompt_n": 2040,
           "prompt_per_second": 2000,
           "protocol": 2
         },
@@ -304,7 +304,7 @@
             "max_tokens": 300,
             "messages": [
               {
-                "content": "<8102 octets f67301f37ff4>",
+                "content": "<8144 octets 5c98ee6b6194>",
                 "role": "user"
               }
             ],
@@ -335,8 +335,8 @@
           "predicted_ms": 6000,
           "predicted_n": 300,
           "predicted_per_second": 50,
-          "prompt_ms": 1014.5,
-          "prompt_n": 2029,
+          "prompt_ms": 1020,
+          "prompt_n": 2040,
           "prompt_per_second": 2000,
           "protocol": 2
         }
@@ -358,8 +358,8 @@
             "predicted_ms": 6000,
             "predicted_n": 300,
             "predicted_per_second": 50,
-            "prompt_ms": 1014.5,
-            "prompt_n": 2029,
+            "prompt_ms": 1020,
+            "prompt_n": 2040,
             "prompt_per_second": 2000,
             "protocol": 2
           }
@@ -387,8 +387,8 @@
           "predicted_ms": 6000,
           "predicted_n": 300,
           "predicted_per_second": 50,
-          "prompt_ms": 1014.5,
-          "prompt_n": 2029,
+          "prompt_ms": 1020,
+          "prompt_n": 2040,
           "prompt_per_second": 2000,
           "protocol": 2
         }
@@ -410,8 +410,8 @@
           "predicted_ms": 6000,
           "predicted_n": 300,
           "predicted_per_second": 50,
-          "prompt_ms": 1014.5,
-          "prompt_n": 2029,
+          "prompt_ms": 1020,
+          "prompt_n": 2040,
           "prompt_per_second": 2000,
           "protocol": 2
         }
@@ -433,8 +433,8 @@
             "predicted_ms": 6000,
             "predicted_n": 300,
             "predicted_per_second": 50,
-            "prompt_ms": 1014.5,
-            "prompt_n": 2029,
+            "prompt_ms": 1020,
+            "prompt_n": 2040,
             "prompt_per_second": 2000,
             "protocol": 2
           }
@@ -542,8 +542,8 @@
           "predicted_ms": 6000,
           "predicted_n": 300,
           "predicted_per_second": 50,
-          "prompt_ms": 1014.5,
-          "prompt_n": 2029,
+          "prompt_ms": 1020,
+          "prompt_n": 2040,
           "prompt_per_second": 2000,
           "protocol": 2
         },
@@ -615,7 +615,7 @@
             "max_tokens": 300,
             "messages": [
               {
-                "content": "<8102 octets f67301f37ff4>",
+                "content": "<8144 octets 5c98ee6b6194>",
                 "role": "user"
               }
             ],
@@ -855,8 +855,8 @@
           "predicted_ms": 6000,
           "predicted_n": 300,
           "predicted_per_second": 50,
-          "prompt_ms": 1014.5,
-          "prompt_n": 2029,
+          "prompt_ms": 1020,
+          "prompt_n": 2040,
           "prompt_per_second": 2000,
           "protocol": 2
         }
@@ -947,8 +947,8 @@
             "predicted_ms": 6000,
             "predicted_n": 300,
             "predicted_per_second": 50,
-            "prompt_ms": 1014.5,
-            "prompt_n": 2029,
+            "prompt_ms": 1020,
+            "prompt_n": 2040,
             "prompt_per_second": 2000,
             "protocol": 2
           }
@@ -993,8 +993,8 @@
           "predicted_ms": 6000,
           "predicted_n": 300,
           "predicted_per_second": 50,
-          "prompt_ms": 1014.5,
-          "prompt_n": 2029,
+          "prompt_ms": 1020,
+          "prompt_n": 2040,
           "prompt_per_second": 2000,
           "protocol": 2
         },
@@ -1066,7 +1066,7 @@
             "max_tokens": 300,
             "messages": [
               {
-                "content": "<8102 octets f67301f37ff4>",
+                "content": "<8144 octets 5c98ee6b6194>",
                 "role": "user"
               }
             ],
@@ -1103,8 +1103,8 @@
           "predicted_ms": 6000,
           "predicted_n": 300,
           "predicted_per_second": 50,
-          "prompt_ms": 1014.5,
-          "prompt_n": 2029,
+          "prompt_ms": 1020,
+          "prompt_n": 2040,
           "prompt_per_second": 2000,
           "protocol": 2
         }
@@ -1132,8 +1132,8 @@
             "predicted_ms": 6000,
             "predicted_n": 300,
             "predicted_per_second": 50,
-            "prompt_ms": 1014.5,
-            "prompt_n": 2029,
+            "prompt_ms": 1020,
+            "prompt_n": 2040,
             "prompt_per_second": 2000,
             "protocol": 2
           }
@@ -1241,8 +1241,8 @@
           "predicted_ms": 6000,
           "predicted_n": 300,
           "predicted_per_second": 50,
-          "prompt_ms": 1014.5,
-          "prompt_n": 2029,
+          "prompt_ms": 1020,
+          "prompt_n": 2040,
           "prompt_per_second": 2000,
           "protocol": 2
         },
@@ -1314,7 +1314,7 @@
             "max_tokens": 300,
             "messages": [
               {
-                "content": "<8102 octets f67301f37ff4>",
+                "content": "<8144 octets 5c98ee6b6194>",
                 "role": "user"
               }
             ],
@@ -1554,8 +1554,8 @@
           "predicted_ms": 6000,
           "predicted_n": 300,
           "predicted_per_second": 50,
-          "prompt_ms": 1014.5,
-          "prompt_n": 2029,
+          "prompt_ms": 1020,
+          "prompt_n": 2040,
           "prompt_per_second": 2000,
           "protocol": 2
         }
@@ -1646,8 +1646,8 @@
             "predicted_ms": 6000,
             "predicted_n": 300,
             "predicted_per_second": 50,
-            "prompt_ms": 1014.5,
-            "prompt_n": 2029,
+            "prompt_ms": 1020,
+            "prompt_n": 2040,
             "prompt_per_second": 2000,
             "protocol": 2
           }
@@ -1686,8 +1686,8 @@
           "predicted_ms": 81920,
           "predicted_n": 4096,
           "predicted_per_second": 50,
-          "prompt_ms": 16403,
-          "prompt_n": 32806,
+          "prompt_ms": 16402,
+          "prompt_n": 32804,
           "prompt_per_second": 2000,
           "protocol": 2
         },
@@ -1759,7 +1759,7 @@
             "max_tokens": 4096,
             "messages": [
               {
-                "content": "<131211 octets 96987502f054>",
+                "content": "<131201 octets e3226a117903>",
                 "role": "user"
               }
             ],
@@ -1790,8 +1790,8 @@
           "predicted_ms": 81920,
           "predicted_n": 4096,
           "predicted_per_second": 50,
-          "prompt_ms": 16403,
-          "prompt_n": 32806,
+          "prompt_ms": 16402,
+          "prompt_n": 32804,
           "prompt_per_second": 2000,
           "protocol": 2
         }
@@ -1813,8 +1813,8 @@
             "predicted_ms": 81920,
             "predicted_n": 4096,
             "predicted_per_second": 50,
-            "prompt_ms": 16403,
-            "prompt_n": 32806,
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