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OpenAI · Model retirement

ft-gpt-3.5-turbo

Stops working (tomorrow)

On October 23, 2026, the model ft-gpt-3.5-turbo will stop working. Calls requesting this model will fail after that date.

What to use instead of ft-gpt-3.5-turbo

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

Facts

API
OpenAI api.openai.com
Model
ft-gpt-3.5-turbo
Kind
Model retirement
Takes effect
October 23, 2026
Calls after that day
Fail
Source
Deprecations page
Last updated

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