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OpenAI · Model retirement

o4-mini-2025-04-16

Stops working (tomorrow)

Calls to the model o4-mini-2025-04-16 on OpenAI stop working on October 23, 2026.

What to use instead of o4-mini-2025-04-16

Move to gpt-5.6-terra, recommended by OpenAI.

Facts

API
OpenAI api.openai.com
Model
o4-mini-2025-04-16
Kind
Model retirement
Takes effect
October 23, 2026
Calls after that day
Fail
Source
Deprecations page
Last updated

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