What changed: OpenAI updated the chat-latest snapshot, which points to the latest model available in ChatGPT for Plus, Pro, Business and Enterprise users. The snapshot will be regularly updated, and OpenAI recommends using the GPT-6 model family for production API usage.
Who is affected
Developers and businesses using the chat-latest snapshot via the OpenAI API, as well as ChatGPT Plus, Pro, Business and Enterprise users.
What it means for your business
For businesses using chat-latest in the OpenAI API, this means the model's behavior may shift over time as the snapshot updates, so production integrations should rely on the GPT-6 model family instead.
What to do
Switch production API integrations to the GPT-6 model family instead of chat-latest; reserve chat-latest for testing new chat behavior.
When it takes effect
The source gives no separate effective date; the change was announced on October 7, 2026.
Source: https://developers.openai.com/api/docs/changelog#2026-10-07
