mistral-medium-2505 model retirement
Stopped workingSubscribe to MistralShare
Requests specifying model mistral-medium-2505 fail since August 31, 2026. Mistral retired the model after announcing the shutdown on May 22, 2026. Any calls still using this identifier no longer return completions.
The error you get
What Mistral answers a call to mistral-medium-2505 once the model is gone, as recorded from real responses:
{"object":"error","message":"Invalid model: mistral-medium-2505","type":"invalid_model","param":null,"code":"1500"}What to use instead of mistral-medium-2505
Mistral recommends migrating to Mistral Medium 3.5.
Facts
- API
- Mistral
api.mistral.ai - Model
mistral-medium-2505- Released
- May 7, 2025 (models.dev)
- Kind
- Model retirement
- Announced
- May 22, 2026
- Takes effect
- August 31, 2026
- Calls after that day
- Fail
- Source
- Lifecycle page
- Last updated
- Verified
- , against Mistral's own pages
Questions
When does mistral-medium-2505 shut down?
Calls to the model mistral-medium-2505 stopped working on August 31, 2026.
What happens to calls after August 31, 2026?
They have failed since August 31, 2026.
What error does mistral-medium-2505 return once it is shut down?
Mistral answers HTTP 400: "Invalid model: mistral-medium-2505". Send another model to fix it.
When was mistral-medium-2505 released?
mistral-medium-2505 was released on May 7, 2025, according to models.dev.
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.
mistral-medium-2505 on other APIs 1
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Azure AI Foundry
mistral-medium-2505Model retirement Stops workingin 33 days
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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.