GPT-6.1 Terra changelog

Codex CLI 0.166.0 adds GPT-6.1 Terra to Vertex AI and Bedrock catalogs

Codex CLI 0.166.0 adds GPT-6.1 Terra to the bundled, Vertex AI, and Amazon Bedrock model catalogs.

Who is affected:

Codex users on Vertex AI or Bedrock can select GPT-6.1 Terra.

What to do:

Update to Codex CLI 0.166.0 to see the model in your catalog.

GPT-6.1 Terra released in the API, succeeding GPT-5.6 Terra

OpenAI released GPT-6.1 Terra on the Responses and Chat Completions endpoints as the successor to GPT-5.6 Terra. It is described as a fast, efficient model for visual reasoning, precise computer use, and clear, natural writing.

Who is affected:

API developers who want a fast, efficient GPT-6 series model for visual reasoning and computer use.

What to do:

Read the GPT-6 guide for prompting and migration guidance before switching.

GPT-6.1 Terra arrives in ChatGPT Work and Codex

GPT-6.1 Terra is available in ChatGPT Work and Codex on Plus, Pro, Business, Enterprise and Edu plans. It is not available in Chat and does not support UAE inference residency.

Who is affected:

Users of Codex and ChatGPT Work on paid plans can now pick a fast model with strong image understanding and computer use.

What to do:

Choose GPT-6.1 Terra from the model list in Advanced in the ChatGPT desktop app or in ChatGPT Work on the web.