AI EngineerGuide

chatgpt-4o-latest retirement date: February 17, 2026

Retired on February 17, 2026; requests to chatgpt-4o-latest now fail.

Retired on Feb 17, 2026retired
Provider
OpenAI
Model IDs affected
chatgpt-4o-latest
Announced
November 18, 2025
Shutdown date
February 17, 2026
Replacement
gpt-5.1-chat-latest
Platforms
Dates apply to the OpenAI API. Fine-tuned models follow the same shutdown schedule as their base model. If you use OpenAI models through another platform, check that platform's own retirement schedule.
Source
Official OpenAI deprecations page (data last changed 2026-11-02, re-checked daily)

Migrating from chatgpt-4o-latest

Not yet reviewed. We haven't written model-specific migration notes for chatgpt-4o-latest yet. Start with the provider's official guidance and the replacement's model page, and use this general checklist:

  • Search your code, config and environment variables for chatgpt-4o-latest.
  • Re-run your evaluation set against gpt-5.1-chat-latest before switching traffic.
  • Recount tokens with the new model's tokenizer and re-check max_tokens, context fit and cost.
  • Check tool calling, structured output and stop sequences on your real prompts.
  • Dates apply to the OpenAI API. Fine-tuned models follow the same shutdown schedule as their base model. If you use OpenAI models through another platform, check that platform's own retirement schedule.

Check your code before Feb 17

Also shutting down on February 17, 2026

All model retirements · All OpenAI deprecations

FAQ

When was chatgpt-4o-latest retired?

chatgpt-4o-latest (chatgpt-4o-latest) was retired on the OpenAI API on February 17, 2026, according to the official OpenAI API deprecations page. Requests to it now fail.

What should I use instead of chatgpt-4o-latest?

The recommended replacement is gpt-5.1-chat-latest.

What happens to chatgpt-4o-latest requests after the shutdown date?

After a model is retired, API requests to it return an error. Move traffic to the replacement and test it on your own prompts before the date.

Does this date apply to Amazon Bedrock, Vertex AI or Azure?

Dates apply to the OpenAI API. Fine-tuned models follow the same shutdown schedule as their base model. If you use OpenAI models through another platform, check that platform’s own retirement schedule.