diff --git a/devnotes/v2.0.0/sprint-trackers/asr-profile-provider-frontend-sprint-tracker.md b/devnotes/v2.0.0/sprint-trackers/asr-profile-provider-frontend-sprint-tracker.md
index 438aec98..d32bbe4e 100644
--- a/devnotes/v2.0.0/sprint-trackers/asr-profile-provider-frontend-sprint-tracker.md
+++ b/devnotes/v2.0.0/sprint-trackers/asr-profile-provider-frontend-sprint-tracker.md
@@ -2,7 +2,7 @@
 
 Run ID: `ASR-PROFILE-FE`
 
-Status: completed through ASR-PROFILE-FE-Sprint 2.
+Status: completed through ASR-PROFILE-FE-Sprint 3.
 
 This tracker belongs to `devnotes/v2.0.0/sprint-plans/asr-profile-provider-frontend-sprint-plan.md`.
 
@@ -201,32 +201,36 @@ Commit:
 
 ## ASR-PROFILE-FE-Sprint 3: Profile Dialog Revamp
 
-Status: pending
+Status: completed
 
 Planned tasks:
 
-- [ ] Keep profile name, description, and default toggle.
-- [ ] Render a transcription step selector using transcription model cards.
-- [ ] Save the first pipeline step as `kind`, `provider`, `model`, `model_family` if required, and `options`.
-- [ ] Add an optional diarization step toggle.
-- [ ] Render diarization parameters from a diarization model schema where available.
-- [ ] Remove hard-coded language/task/thread/tail-padding/chunking/diarization controls from `ASRProfileDialog.tsx`.
-- [ ] Add compact summaries for selected model, installed/download state, reload-required changes, and advanced fields.
+- [x] Keep profile name, description, and default toggle.
+- [x] Render a transcription step selector using transcription model cards.
+- [x] Save the first pipeline step as `kind`, `provider`, `model`, `model_family` if required, and `options`.
+- [x] Add an optional diarization step toggle.
+- [x] Render diarization parameters from a diarization model schema where available.
+- [x] Remove hard-coded language/task/thread/tail-padding/chunking/diarization controls from `ASRProfileDialog.tsx`.
+- [x] Add compact summaries for selected model, installed/download state, reload-required changes, and advanced fields.
 
 Acceptance checks:
 
-- [ ] The dialog exposes every parameter in the selected transcription model schema.
-- [ ] Parakeet TDT v2/v3 show Parakeet-supported parameters and no Whisper-only parameters.
-- [ ] Whisper models show Whisper-specific language/task/timestamp controls.
-- [ ] Diarization is descriptor-driven or explicitly blocked pending a backend model-card endpoint.
+- [x] The dialog exposes every parameter in the selected transcription model schema.
+- [x] Parakeet TDT v2/v3 show Parakeet-supported parameters and no Whisper-only parameters.
+- [x] Whisper models show Whisper-specific language/task/timestamp controls.
+- [x] Diarization is descriptor-driven or explicitly blocked pending a backend model-card endpoint.
 
 Verification:
 
-- [ ] Pending.
+- [x] `npm --prefix web/frontend run build`
+- [x] `npm --prefix web/frontend run lint` (passes with existing warnings outside this sprint)
+- [x] `git diff --check -- web/frontend/src/features/settings/components/ASRProfileDialog.tsx web/frontend/src/features/settings/pages/SettingsPage.tsx devnotes/v2.0.0/sprint-trackers/asr-profile-provider-frontend-sprint-tracker.md`
 
 Artifacts:
 
-- Pending.
+- `web/frontend/src/features/settings/components/ASRProfileDialog.tsx`
+- `web/frontend/src/features/settings/pages/SettingsPage.tsx`
+- `devnotes/v2.0.0/sprint-trackers/asr-profile-provider-frontend-sprint-tracker.md`
 
 Commit:
 
diff --git a/web/frontend/src/features/settings/components/ASRProfileDialog.tsx b/web/frontend/src/features/settings/components/ASRProfileDialog.tsx
index 6bffc577..cb254c47 100644
--- a/web/frontend/src/features/settings/components/ASRProfileDialog.tsx
+++ b/web/frontend/src/features/settings/components/ASRProfileDialog.tsx
@@ -7,12 +7,16 @@ import {
   type TranscriptionProfile,
   type TranscriptionProfileOptions,
   normalizeProfileOptions,
+  type ASRStep,
 } from "../api/profilesApi";
+import { ASRParameterForm } from "./ASRParameterForm";
+import { resolveParameterValues, sanitizeParameterValues } from "./asrParameterValues";
 
 type ASRProfileDialogProps = {
   open: boolean;
   profile: TranscriptionProfile | null;
   models: TranscriptionModel[];
+  diarizationModels: TranscriptionModel[];
   onClose: () => void;
   onSave: (profile: {
     id?: string;
@@ -30,7 +34,7 @@ const fallbackModels: TranscriptionModel[] = [
   { id: "parakeet-v3", display_name: "NVIDIA Parakeet TDT v3", provider: "local", installed: false, default: false, capabilities: { transcription: true, word_timestamps: true } },
 ];
 
-export function ASRProfileDialog({ open, profile, models, onClose, onSave }: ASRProfileDialogProps) {
+export function ASRProfileDialog({ open, profile, models, diarizationModels, onClose, onSave }: ASRProfileDialogProps) {
   const [name, setName] = useState("");
   const [description, setDescription] = useState("");
   const [isDefault, setIsDefault] = useState(false);
@@ -38,6 +42,7 @@ export function ASRProfileDialog({ open, profile, models, onClose, onSave }: ASR
   const [saving, setSaving] = useState(false);
   const [error, setError] = useState("");
   const availableModels = models.length ? models : fallbackModels;
+  const availableDiarizationModels = diarizationModels;
 
   const modelOptions = useMemo<SelectOption[]>(() => {
     return availableModels.map((model) => ({
@@ -48,7 +53,11 @@ export function ASRProfileDialog({ open, profile, models, onClose, onSave }: ASR
   }, [availableModels]);
 
   const transcriptionStep = options.pipeline.find((step) => step.kind === "transcription");
+  const diarizationStep = options.pipeline.find((step) => step.kind === "diarization");
   const selectedModelID = transcriptionStep?.model || availableModels.find((model) => model.default)?.id || availableModels[0]?.id || "";
+  const selectedModel = availableModels.find((model) => model.id === selectedModelID) || null;
+  const selectedDiarizationModelID = diarizationStep?.model || availableDiarizationModels.find((model) => model.default)?.id || availableDiarizationModels[0]?.id || "";
+  const selectedDiarizationModel = availableDiarizationModels.find((model) => model.id === selectedDiarizationModelID) || null;
 
   useEffect(() => {
     if (!open) return;
@@ -65,6 +74,27 @@ export function ASRProfileDialog({ open, profile, models, onClose, onSave }: ASR
     setOptions((current) => withTranscriptionModel(current, availableModels, modelID));
   };
 
+  const updateTranscriptionOptions = (values: Record<string, unknown>) => {
+    setOptions((current) => updateStepOptions(current, "transcription", values));
+  };
+
+  const updateDiarizationModel = (modelID: string) => {
+    setOptions((current) => withDiarizationModel(current, availableDiarizationModels, modelID));
+  };
+
+  const updateDiarizationOptions = (values: Record<string, unknown>) => {
+    setOptions((current) => updateStepOptions(current, "diarization", values));
+  };
+
+  const toggleDiarization = (enabled: boolean) => {
+    setOptions((current) => {
+      if (!enabled) {
+        return { pipeline: current.pipeline.filter((step) => step.kind !== "diarization") };
+      }
+      return withDiarizationModel(current, availableDiarizationModels, selectedDiarizationModelID);
+    });
+  };
+
   const submit = async () => {
     const cleanName = name.trim();
     if (!cleanName) {
@@ -79,7 +109,7 @@ export function ASRProfileDialog({ open, profile, models, onClose, onSave }: ASR
         name: cleanName,
         description: description.trim(),
         is_default: isDefault,
-        options: ensureTranscriptionStep(options, availableModels),
+        options: prepareProfileOptionsForSave(options, availableModels, availableDiarizationModels),
       });
       onClose();
     } catch (err) {
@@ -120,6 +150,31 @@ export function ASRProfileDialog({ open, profile, models, onClose, onSave }: ASR
               <SelectField label="Model" value={selectedModelID} options={modelOptions} onChange={updateModel} />
             </div>
           </section>
+
+          <ASRParameterForm
+            model={selectedModel}
+            values={transcriptionStep?.options || {}}
+            onChange={updateTranscriptionOptions}
+          />
+
+          <section className="scr-settings-section">
+            <h3 className="scr-settings-section-title">Diarization</h3>
+            <CheckRow label="Identify speakers" checked={Boolean(diarizationStep)} onChange={toggleDiarization} />
+            {diarizationStep && availableDiarizationModels.length > 0 ? (
+              <div className="scr-form-grid">
+                <SelectField label="Model" value={selectedDiarizationModelID} options={diarizationModelOptions(availableDiarizationModels)} onChange={updateDiarizationModel} />
+              </div>
+            ) : null}
+            {diarizationStep && availableDiarizationModels.length === 0 ? <div className="scr-alert">No diarization model card is available.</div> : null}
+          </section>
+
+          {diarizationStep ? (
+            <ASRParameterForm
+              model={selectedDiarizationModel}
+              values={diarizationStep.options || {}}
+              onChange={updateDiarizationOptions}
+            />
+          ) : null}
         </div>
 
         <footer className="scr-modal-footer">
@@ -166,12 +221,56 @@ function ensureTranscriptionStep(options: TranscriptionProfileOptions, models: T
 
 function withTranscriptionModel(options: TranscriptionProfileOptions, models: TranscriptionModel[], modelID: string): TranscriptionProfileOptions {
   const model = models.find((item) => item.id === modelID) || fallbackModels.find((item) => item.id === modelID) || fallbackModels[0];
+  const existingStep = options.pipeline.find((step) => step.kind === "transcription");
   const nextStep = {
-    ...(options.pipeline.find((step) => step.kind === "transcription") || {}),
+    ...(existingStep || {}),
     kind: "transcription" as const,
     provider: model.provider,
     model: model.id,
+    options: sanitizeParameterValues(model, resolveParameterValues(model, existingStep?.options || {})),
   };
   const otherSteps = options.pipeline.filter((step) => step.kind !== "transcription");
   return { pipeline: [nextStep, ...otherSteps] };
 }
+
+function withDiarizationModel(options: TranscriptionProfileOptions, models: TranscriptionModel[], modelID: string): TranscriptionProfileOptions {
+  const model = models.find((item) => item.id === modelID) || models[0];
+  if (!model) return options;
+  const existingStep = options.pipeline.find((step) => step.kind === "diarization");
+  const nextStep = {
+    ...(existingStep || {}),
+    kind: "diarization" as const,
+    provider: model.provider,
+    model: model.id,
+    options: sanitizeParameterValues(model, resolveParameterValues(model, existingStep?.options || {})),
+  };
+  const otherSteps = options.pipeline.filter((step) => step.kind !== "diarization");
+  return { pipeline: [...otherSteps, nextStep] };
+}
+
+function updateStepOptions(options: TranscriptionProfileOptions, kind: ASRStep["kind"], values: Record<string, unknown>): TranscriptionProfileOptions {
+  return {
+    pipeline: options.pipeline.map((step) => (step.kind === kind ? { ...step, options: values } : step)),
+  };
+}
+
+function prepareProfileOptionsForSave(options: TranscriptionProfileOptions, models: TranscriptionModel[], diarizationModels: TranscriptionModel[]): TranscriptionProfileOptions {
+  const withTranscription = ensureTranscriptionStep(options, models);
+  return {
+    pipeline: withTranscription.pipeline.map((step) => {
+      const model = step.kind === "diarization"
+        ? diarizationModels.find((item) => item.id === step.model)
+        : models.find((item) => item.id === step.model) || fallbackModels.find((item) => item.id === step.model);
+      if (!model) return step;
+      return { ...step, options: sanitizeParameterValues(model, resolveParameterValues(model, step.options || {})) };
+    }),
+  };
+}
+
+function diarizationModelOptions(models: TranscriptionModel[]): SelectOption[] {
+  return models.map((model) => ({
+    value: model.id,
+    label: model.display_name || model.id,
+    description: model.installed ? "Installed locally" : "Downloads on use",
+  }));
+}
diff --git a/web/frontend/src/features/settings/pages/SettingsPage.tsx b/web/frontend/src/features/settings/pages/SettingsPage.tsx
index cdc0e26c..4d3ba039 100644
--- a/web/frontend/src/features/settings/pages/SettingsPage.tsx
+++ b/web/frontend/src/features/settings/pages/SettingsPage.tsx
@@ -4,7 +4,7 @@ import { Sidebar } from "@/features/home/components/HomePage";
 import { AppButton, IconButton } from "@/shared/ui/Button";
 import { ConfirmDialog } from "@/shared/ui/ConfirmDialog";
 import { EmptyState } from "@/shared/ui/EmptyState";
-import { useDeleteProfile, useProfiles, useSaveProfile, useTranscriptionModels } from "@/features/settings/hooks/useProfiles";
+import { useASRModels, useDeleteProfile, useProfiles, useSaveProfile, useTranscriptionModels } from "@/features/settings/hooks/useProfiles";
 import { ASRProfileDialog } from "../components/ASRProfileDialog";
 import { GeneralSettingsPanel } from "../components/GeneralSettingsPanel";
 import { LLMProviderPanel } from "../components/LLMProviderPanel";
@@ -22,6 +22,7 @@ export function Settings() {
   const [profileToDelete, setProfileToDelete] = useState<TranscriptionProfile | null>(null);
   const profilesQuery = useProfiles();
   const modelsQuery = useTranscriptionModels();
+  const diarizationModelsQuery = useASRModels(["diarization"]);
   const saveProfileMutation = useSaveProfile();
   const deleteProfileMutation = useDeleteProfile();
   const profiles = useMemo(() => profilesQuery.data ?? [], [profilesQuery.data]);
@@ -142,6 +143,7 @@ export function Settings() {
         open={dialogOpen}
         profile={editingProfile}
         models={modelsQuery.data || []}
+        diarizationModels={diarizationModelsQuery.data || []}
         onClose={() => {
           setDialogOpen(false);
           setEditingProfile(null);