diff --git a/.env.example b/.env.example
index e902568..96a9d72 100644
--- a/.env.example
+++ b/.env.example
@@ -12,7 +12,7 @@ DB_PASSWORD=postgres
 # AI Insights — Gemini-powered recommendations
 # Insights are disabled if GOOGLE_API_KEY is unset (rest of the API still runs).
 GOOGLE_API_KEY=your_google_ai_studio_key_here
-GEMINI_MODEL=gemini-1.5-flash
+GEMINI_MODEL=gemini-2.5-flash
 INSIGHTS_ENABLED=true
 INSIGHT_CHECK_INTERVAL_SECONDS=600
 INSIGHT_COOLDOWN_MINUTES=45
diff --git a/docs/ai-insights.md b/docs/ai-insights.md
index 64cad56..085d067 100644
--- a/docs/ai-insights.md
+++ b/docs/ai-insights.md
@@ -6,7 +6,7 @@ A Gemini-powered pipeline that watches each user's metrics and surfaces concrete
 
 1. The **insight scheduler** ticks every `INSIGHT_CHECK_INTERVAL_SECONDS` (default 600 s).
 2. For each user with telemetry in the last `INSIGHT_ACTIVITY_WINDOW_MINUTES` (default 30), the **rule engine** evaluates today's metrics + current session.
-3. If a rule fires AND the user is not in cooldown, the system asks **Gemini** (`gemini-1.5-flash` by default) to characterize the workflow state and propose one action.
+3. If a rule fires AND the user is not in cooldown, the system asks **Gemini** (`gemini-2.5-flash` by default) to characterize the workflow state and propose one action.
 4. Gemini returns strict JSON validated against an enum schema. Invalid responses are dropped, never persisted.
 5. A `WorkflowState` row + a `Recommendation` row are written. Any prior pending recommendation for the user is marked `expired` in the same transaction.
 
@@ -63,7 +63,7 @@ All require JWT or `dvf_` API token auth. The action endpoint also verifies owne
 | Variable | Default | Purpose |
 | --- | --- | --- |
 | `GOOGLE_API_KEY` | _(unset)_ | Required to enable the pipeline. Unset = scheduler logs a single warning at boot and disables itself; rest of the API works. |
-| `GEMINI_MODEL` | `gemini-1.5-flash` | Model name passed to the SDK. |
+| `GEMINI_MODEL` | `gemini-2.5-flash` | Model name passed to the SDK. |
 | `INSIGHTS_ENABLED` | `true` | Kill switch. Set to `false` to disable the scheduler. |
 | `INSIGHT_CHECK_INTERVAL_SECONDS` | `600` | How often the scheduler ticks. |
 | `INSIGHT_COOLDOWN_MINUTES` | `45` | Minimum gap between recommendations for the same user. |
diff --git a/src/services/llm/gemini.service.js b/src/services/llm/gemini.service.js
index 06787c7..67d09b8 100644
--- a/src/services/llm/gemini.service.js
+++ b/src/services/llm/gemini.service.js
@@ -65,7 +65,7 @@ const ajv = new Ajv();
 const validateInsight = ajv.compile(insightSchema);
 
 const apiKey = process.env.GOOGLE_API_KEY;
-const modelName = process.env.GEMINI_MODEL || 'gemini-1.5-flash';
+const modelName = process.env.GEMINI_MODEL || 'gemini-2.5-flash';
 
 let model = null;
 if (apiKey) {