mistral-ocr-4-0 model retirement
Stopped workingSubscribe to MistralShare
Mistral retired the mistral-ocr-4-0 model on September 30, 2026. Calls to this model fail since that date. The change affects all requests directed to model mistral-ocr-4-0.
The error you get
What Mistral answers a call to mistral-ocr-4-0 once the model is gone, as recorded from real responses:
{"object":"error","message":"Invalid model: mistral-ocr-4-0","type":"invalid_model","param":null,"code":"1500"}What to use instead of mistral-ocr-4-0
Switch to OCR 4.1, which is recommended by Mistral.
Facts
- API
- Mistral
api.mistral.ai - Model
mistral-ocr-4-0- Kind
- Model retirement
- Announced
- September 29, 2026
- Takes effect
- September 30, 2026
- Calls after that day
- Fail
- Source
- Lifecycle page
- Last updated
- Verified
- , against Mistral's own pages
Questions
When does mistral-ocr-4-0 shut down?
Calls to the model mistral-ocr-4-0 stopped working on September 30, 2026.
What happens to calls after September 30, 2026?
They have failed since September 30, 2026.
What error does mistral-ocr-4-0 return once it is shut down?
Mistral answers HTTP 400: "Invalid model: mistral-ocr-4-0". Send another model to fix it.
How do I find the calls this hits in my code?
Okapi reads your repository, finds the calls this change hits and opens a pull request with the fix. It never commits to your branches: every change comes as a pull request you review.
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You fixed this one by hand.
Okapi opens the pull request with the fix before the next breaking change reaches your code.