Mistral
open-codestral-mamba model retirement
Stopped workingSubscribe to MistralShare
On June 6, 2025, the open-codestral-mamba model was retired. Requests targeting model open-codestral-mamba fail after this date.
The error you get
What Mistral answers a call to open-codestral-mamba once the model is gone, as recorded from real responses:
{"object":"error","message":"Invalid model: open-codestral-mamba","type":"invalid_model","param":null,"code":"1500"}What to use instead of open-codestral-mamba
Mistral recommends migrating to Codestral.
Facts
- API
- Mistral
api.mistral.ai - Model
open-codestral-mamba- Kind
- Model retirement
- Announced
- June 6, 2025
- Takes effect
- June 6, 2025
- Calls after that day
- Fail
- Source
- Lifecycle page
- Last updated
- Verified
- , against Mistral's own pages
Questions
When does open-codestral-mamba shut down?
Calls to the model open-codestral-mamba on Mistral stopped working on June 6, 2025.
What happens to calls after June 6, 2025?
They have failed since June 6, 2025.
What error does open-codestral-mamba return once it is shut down?
Mistral answers HTTP 400: "Invalid model: open-codestral-mamba". 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.