diff --git a/src/features/simulations/components/IdeesSuggestions.tsx b/src/features/simulations/components/IdeesSuggestions.tsx
new file mode 100644
index 0000000..dcb68c3
--- /dev/null
+++ b/src/features/simulations/components/IdeesSuggestions.tsx
@@ -0,0 +1,91 @@
+/**
+ * Modal — suggestions d'idées DeepSeek (tâche G5).
+ *
+ * Présentationnel pur. La fermeture déclenche `onClose` qui doit appeler
+ * `reset()` du hook useIdees côté parent pour vider le cache de mutation.
+ *
+ * Règle H : aucune logique métier. Règle L : tokens Direction H uniquement.
+ */
+
+import { Loader2, Lightbulb } from 'lucide-react'
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogHeader,
+  DialogTitle,
+} from '@/shared/components/ui/dialog'
+import type { ApiError } from '@/shared/types/api'
+
+function mapIdeesError(err: ApiError | null): string | null {
+  if (!err) return null
+  switch (err.code) {
+    case 'AUTH_REQUIRED':
+      return 'Votre session a expiré. Reconnectez-vous.'
+    case 'VALIDATION_ERROR':
+    case 'INVALID_BODY':
+      return 'Écrivez au moins 30 mots avant de demander des suggestions.'
+    default:
+      return 'Suggestions indisponibles. Réessayez dans quelques instants.'
+  }
+}
+
+interface Props {
+  idees: string[] | null
+  isLoading: boolean
+  error: ApiError | null
+  isOpen: boolean
+  onClose: () => void
+}
+
+export function IdeesSuggestions({ idees, isLoading, error, isOpen, onClose }: Props) {
+  const message = mapIdeesError(error)
+
+  return (
+    <Dialog
+      open={isOpen}
+      onOpenChange={(open) => {
+        if (!open) onClose()
+      }}
+    >
+      <DialogContent>
+        <DialogHeader>
+          <DialogTitle className="flex items-center gap-2 text-ink-1">
+            <Lightbulb className="size-5 text-expria" aria-hidden="true" />
+            Suggestions d'idées
+          </DialogTitle>
+          <DialogDescription>
+            Pour prolonger votre rédaction, inspirez-vous de ces pistes.
+          </DialogDescription>
+        </DialogHeader>
+
+        {isLoading && (
+          <div className="flex items-center gap-2 text-sm text-ink-3" aria-busy="true">
+            <Loader2 className="size-4 animate-spin text-expria" aria-hidden="true" />
+            Génération des idées…
+          </div>
+        )}
+
+        {!isLoading && message && (
+          <div
+            role="alert"
+            className="rounded-md border border-danger/40 bg-danger-bg px-3 py-2 text-sm text-danger"
+          >
+            {message}
+          </div>
+        )}
+
+        {!isLoading && !message && idees && idees.length > 0 && (
+          <ul className="space-y-2 text-sm text-ink-2">
+            {idees.map((idee, i) => (
+              <li key={i} className="flex gap-2">
+                <span className="mt-[0.4em] size-1.5 shrink-0 rounded-full bg-expria" aria-hidden="true" />
+                <span>{idee}</span>
+              </li>
+            ))}
+          </ul>
+        )}
+      </DialogContent>
+    </Dialog>
+  )
+}
diff --git a/src/features/simulations/components/SimulationForm.tsx b/src/features/simulations/components/SimulationForm.tsx
index d6fffeb..6fee654 100644
--- a/src/features/simulations/components/SimulationForm.tsx
+++ b/src/features/simulations/components/SimulationForm.tsx
@@ -11,18 +11,23 @@
  */
 
 import { useEffect, useRef, useState, type FormEvent } from 'react'
-import { Clock, Loader2, Shuffle } from 'lucide-react'
+import { Clock, Lightbulb, Loader2, Shuffle } from 'lucide-react'
 import { z } from 'zod'
 import { Button } from '@/shared/components/ui/button'
 import { formatTache } from '@/entities/production/lib'
+import { hasAccess, type Plan } from '@/entities/user/lib'
 import type { SujetData, Tache } from '@/entities/production/types'
 import type { ApiError } from '@/shared/types/api'
 import { countWords, getSimulationConfig } from '../lib/simulationConfig'
 import { useTimer } from '../hooks/useTimer'
+import { useIdees } from '../hooks/useIdees'
 import { SujetDisplay } from './SujetDisplay'
 import { SpecialCharsKeyboard } from './SpecialCharsKeyboard'
 import { TimerDisplay } from './TimerDisplay'
 import { WordCountBar } from './WordCountBar'
+import { IdeesSuggestions } from './IdeesSuggestions'
+
+const MIN_WORDS_IDEES = 30
 
 const textSchema = z.object({
   texte: z
@@ -49,6 +54,7 @@ function mapCorrectError(err: ApiError | null): string | null {
 interface Props {
   tache: Tache
   sujet: SujetData | null
+  plan: Plan
   isSubmitting: boolean
   error: ApiError | null
   onSubmit: (texte: string) => void
@@ -59,6 +65,7 @@ interface Props {
 export function SimulationForm({
   tache,
   sujet,
+  plan,
   isSubmitting,
   error,
   onSubmit,
@@ -69,12 +76,38 @@ export function SimulationForm({
   const hasAutoSubmittedRef = useRef(false)
   const [texte, setTexte] = useState('')
   const [fieldError, setFieldError] = useState<string | null>(null)
+  const [isIdeesOpen, setIsIdeesOpen] = useState(false)
 
   const config = getSimulationConfig(tache)
   const wordCount = countWords(texte)
   const canSubmit = wordCount >= config.motsMin
 
   const timer = useTimer(config.dureeMinutes, !isSubmitting)
+  const idees = useIdees()
+
+  const tipsAllowed = hasAccess(plan, 'tips')
+  const ideesDisabled =
+    isSubmitting ||
+    idees.isLoading ||
+    !sujet ||
+    !tipsAllowed ||
+    wordCount < MIN_WORDS_IDEES
+  const ideesTitle = !tipsAllowed
+    ? 'Disponible en Standard'
+    : wordCount < MIN_WORDS_IDEES
+      ? `Écrivez au moins ${MIN_WORDS_IDEES} mots`
+      : undefined
+
+  function handleIdeesClick() {
+    if (!sujet) return
+    setIsIdeesOpen(true)
+    idees.fetchIdees({ consigne: sujet.consigne, contenu: texte })
+  }
+
+  function handleIdeesClose() {
+    setIsIdeesOpen(false)
+    idees.reset()
+  }
 
   useEffect(() => {
     const el = textareaRef.current
@@ -149,7 +182,18 @@ export function SimulationForm({
       <SujetDisplay sujet={sujet} />
 
       {sujet && (
-        <div className="flex justify-end">
+        <div className="flex flex-wrap justify-end gap-2">
+          <button
+            type="button"
+            onClick={handleIdeesClick}
+            disabled={ideesDisabled}
+            title={ideesTitle}
+            className="inline-flex items-center gap-1.5 rounded-md border border-line bg-surface px-3 py-1.5 text-sm text-ink-2 transition-colors hover:border-expria hover:text-expria focus:border-expria focus:outline-none focus:ring-2 focus:ring-expria/20 disabled:cursor-not-allowed disabled:opacity-50"
+            aria-label="Obtenir des suggestions d'idées"
+          >
+            <Lightbulb className="size-4" aria-hidden="true" />
+            Suggestions d'idées
+          </button>
           <button
             type="button"
             onClick={onChangeSujet}
@@ -163,6 +207,14 @@ export function SimulationForm({
         </div>
       )}
 
+      <IdeesSuggestions
+        idees={idees.idees}
+        isLoading={idees.isLoading}
+        error={idees.error}
+        isOpen={isIdeesOpen}
+        onClose={handleIdeesClose}
+      />
+
       {apiError && (
         <div
           role="alert"
diff --git a/src/features/simulations/pages/SimulationPage.tsx b/src/features/simulations/pages/SimulationPage.tsx
index e9f6bff..9895e1b 100644
--- a/src/features/simulations/pages/SimulationPage.tsx
+++ b/src/features/simulations/pages/SimulationPage.tsx
@@ -104,6 +104,7 @@ export function SimulationPage() {
           <SimulationForm
             tache={production.tache}
             sujet={sujet}
+            plan={planData.plan}
             isSubmitting={isCorrecting}
             error={correctError}
             onSubmit={submitText}