OpenAI's Codex adds experimental GPT-6.1 Terra model, built-in Google Cloud Vertex AI prov

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Oct 27, 2026 20:16 UTC github openai/codex

OpenAI's Codex adds experimental GPT-6.1 Terra model, built-in Google Cloud Vertex AI provider, and enables memory v2 by default.

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openai codex just dropped a new release with gpt-6.1 terra and a google cloud vertex ai integration. seems like they're expanding model support and cloud options.

looks like openai/codex is getting a big update! gpt-6.1 terra is in the model catalog, plus memory v2 is now default. definitely keeping an eye on this.

openai/codex release: rust-v0.165.0 name: 0.165.0 published: 2026-10-27T20:09:38Z url: https://github.com/openai/codex/releases/tag/rust-v0.165.0 ## New Features - Added a built-in Google Cloud Vertex AI provider, configured with `model_provider = "gcp"`. (#56265) - Added GPT-6.1 Terra to the model catalogs. (#57337) - Added a repository filter to the session picker and directory grouping to the agent command center, making it easier to navigate sessions across linked worktrees. (#56308) - Added experimental attached thread forks to the app-server API. (#56351) - Enabled reasoning effort changes during a conversation by default for supported models. (#56163) - Enabled memory v2 by default for fresh profiles and added support for importing external-agent memories into it. (#56211, #56414) ## Bug Fixes - Fixed fresh TUI sessions to honor the server’s default approval reviewer when no explicit override is provided. (#56090) - Kept TUI preferences editable and immediately applicable when execution settings are invalid. (#56091) - Cancelled remote MCP tool requests when their local response futures are dropped. (#56132) - Prevented queued agent messages from restarting work after an interrupt or a switch to Plan mode. (#56330) - Stopped retrying when a provider reports that a model was not found, preserving its error message. (#56445) - Closed a marketplace URL validation gap that could allow Git to connect to a different host than the one checked against allowed patterns. (#56263) ## Changelog Full Changelog: https://github.com/openai/codex/compare/rust-v0.164.0...rust-v0.165.0 - #56081 Cache decrypted Codex auth and managed secrets @celia-oai - #56090 Honor server approval reviewer defaults on fresh TUI startup @etraut-openai - #56091 Keep TUI preferences editable when execution settings are invalid @etraut-openai - #56097 Prepare TUI startup to accept multiple backend sessions @bc-openai - #56124 Forward Guardian reviewer events to parent raw-event subscribers