Mistral (Le Chat) is the conversational AI assistant from Mistral AI, used for everyday chat, drafting and rewriting text, summarizing documents, coding help, research questions, and quick reasoning tasks across the web app and mobile apps. When it stops responding mid-conversation, hangs on a blank reply, or refuses to load at all, real work stalls. This page tracks whether the problem is on Mistral’s side or yours, so you can stop guessing. Check the live verdict and recent user reports at the top of this page first, then use the steps below to confirm and work around the issue.
Common reasons Mistral (Le Chat) stops working
- Backend or capacity issues: heavy demand can slow responses, cause timeouts, or return errors when the service is under load.
- Login and session problems: expired sessions, sign-in loops, or authentication errors that lock you out of the chat interface.
- Responses that stall or cut off: the reply spinner runs indefinitely, generation stops partway, or messages fail to send.
- Regional or network routing: outages that affect some countries, networks, or ISPs while others stay online.
- Browser-side trouble: stale cache, cookies, an aggressive extension, or an outdated app build interfering with the connection.
- API versus web app: the developer API and the Le Chat interface can fail independently, so one may work while the other does not.
- File upload or attachment errors: documents that fail to process, time out, or get rejected during analysis.
How to fix Mistral (Le Chat) when it is not working
- Check the status at the top of this page. If our verdict and user reports show a broad outage, the issue is on Mistral’s side and waiting is the fix.
- Reload the page or restart the app. A simple refresh clears many stalled sessions and failed requests.
- Sign out and back in. This resets an expired or broken session and resolves most login loops.
- Clear your browser cache and cookies for the site, or try a private or incognito window to rule out stale data.
- Disable extensions. Ad blockers, privacy tools, and script blockers can interfere with the chat interface.
- Switch networks. Move between Wi-Fi and mobile data, or try a different connection, to rule out a local or ISP issue.
- Try another device or browser to confirm whether the problem follows you or stays with one setup.
- Update the mobile app to the latest version, since older builds can break after server-side changes.
- Wait and retry. If capacity is the cause, short pauses between attempts often succeed where rapid retries fail.
For a fuller playbook, see our guide on what to do when an AI tool is down.
Is Mistral (Le Chat) down, or is it just you?
If your own troubleshooting does not help, the next question is whether the problem is widespread. When many people report the same failure at the same time, that points to a real outage rather than something local to your account or device. If reports are quiet but you still cannot connect, the cause is more likely your network, browser, or session. The verdict and live reports at the top of this page are the fastest way to tell the difference, and you can add your own report to help others confirm what they are seeing.
How we check Mistral (Le Chat)
Mistral publishes an official status page at status.mistral.ai, and we link it here so you can compare provider-confirmed incidents with what we observe. That page does not expose a machine-readable feed our monitor can poll, so our per-surface readings come from our own independent reachability checks, run from the outside on a regular interval: Le Chat (chat.mistral.ai) and the API endpoint (api.mistral.ai) are probed separately, only the Le Chat surface drives the main verdict, and neither surface’s status is ever inferred from the other. We combine that signal with the crowd-sourced user reports submitted on this page, so the verdict reflects both what our checks observe and what real users are experiencing right now. You can read the full details of our approach on our methodology page.
Alternatives to Mistral (Le Chat) during an outage
If Mistral (Le Chat) is down and you need to keep working, several other assistants cover similar ground. ChatGPT, Claude, and Gemini all handle chat, drafting, summarizing, and coding help, and any of them can serve as a temporary backup. Before you switch, confirm your chosen alternative is healthy on its own status page, since AI services sometimes experience problems at the same time. Once Mistral (Le Chat) recovers, the verdict at the top of this page will reflect it.
Le Chat versus La Plateforme
Mistral runs two distinct products that fail separately. Le Chat is the web assistant for end users, while La Plateforme is the developer platform where you create API keys and call the models programmatically. An outage in one does not imply the other is affected, because they sit behind different front ends and quotas.
On Le Chat, the usual symptoms are responses that stall, a generation that stops mid-answer, or sign-in failing to complete. On La Plateforme, problems surface as HTTP errors from the API: 401 for an invalid or expired key, 429 when you exceed your rate limit or monthly tier, and 5xx when the service itself is degraded. The API rate limits are governed by your account tier and are entirely separate from any limits you experience inside Le Chat, so a developer can be throttled while the chat assistant works normally.
- Le Chat answers stalling or cutting off partway
- Sign-in or account verification not completing
- API returning 401, 429, or 5xx status codes
- Console or key management pages slow to load