What changed
OpenAI describes GPT-6.1 Terra as a fast, efficient model with strong image understanding and precise computer use. It is available in Codex and ChatGPT Work (not Chat) on Plus, Pro, Business, Enterprise and Edu. In the CLI it needs Codex CLI 0.159.0 or later and is selected with codex -m gpt-6.1-terra. OpenAI estimates 35–285 local messages per five-hour period on Plus and Standard Business, against 15–160 for GPT-6.1 Sol.
Who it affects
Paid ChatGPT plan users of the Codex CLI, desktop app and Work. Enterprise access depends on workspace availability and admin controls.
What to do
Update to Codex CLI 0.159.0 or later and try gpt-6.1-terra for faster, cheaper tasks or work that relies on screens and images.