xAI
grok-3-mini model retirement
Stopped workingSubscribe to xAIShare
Calls to the model grok-3-mini on xAI stopped working on October 14, 2026.
The error you get
What xAI answers a call to grok-3-mini once the model is gone, as recorded from real responses:
{"code":"invalid-argument","error":"Model not found: grok-3-mini"}What to use instead of grok-3-mini
Move to grok-4.3. grok-4.3 with a low reasoning effort is the closest equivalent, though the price floor is considerably higher than Grok 3 Mini's was.
Facts
- API
- xAI
api.x.ai - Model
grok-3-mini- Released
- June 1, 2024 (models.dev)
- Kind
- Model retirement
- Takes effect
- October 14, 2026
- Calls after that day
- Fail
- Source
- models.dev
- Last updated
- Verified
- , against xAI's own pages
Questions
When does grok-3-mini shut down?
Calls to the model grok-3-mini on xAI stopped working on October 14, 2026.
What happens to calls after October 14, 2026?
They have failed since October 14, 2026.
What error does grok-3-mini return once it is shut down?
xAI answers HTTP 400: "Model not found: grok-3-mini". Send another model to fix it.
When was grok-3-mini released?
grok-3-mini was released on June 1, 2024, 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.
grok-3-mini on other APIs 1
-
Azure AI Foundry
grok-3-miniModel retirement Stopped working
More from xAI 10
-
grok-3Model retirement Redirected -
grok-4Model retirement Stopped working -
grok-4-0709Model retirement Redirected -
grok-2Model retirement Stopped working -
grok-2-1212Model retirement Stopped working -
grok-2-image-1212Model retirement Stopped working -
grok-2-latestModel retirement Stopped working -
grok-2-vision-1212Model retirement Stopped working -
grok-betaModel retirement Stopped working -
grok-vision-betaModel retirement Stopped working
You fixed this one by hand.
Okapi opens the pull request with the fix before the next breaking change reaches your code.