ModelClock
Capability change
Capability change announced Jun 24, 2026
OpenAI documents a capability change: “Update · Model: chat-latest Updated the chat-latest snapshot, which points to the latest Instant model currently used in ChatGPT.”
- Hosting route
- First-party API
- Affected scope
- Not stated in the notice
- Announced
- Jun 24, 2026
- First seen by ModelClock
- Oct 3, 2026
What the provider published
developers.openai.com ↗Update · Model: chat-latest
Updated the
chat-latestsnapshot, which points to the latest Instant model currently used in ChatGPT. We recommend leveraging GPT-5.5 for production API usage, but feel free to use this model to test the latest improvements for chat use cases. The underlying model snapshot will be regularly updated. Read more here.
Read from the provider's text; the quote is the provider's exact lines.