OpenAI's Codex project has released rust-v0.159.1, featuring the addition of GPT-6.1 Sol a

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Sep 29, 2026 21:20 UTC github openai/codex

OpenAI's Codex project has released rust-v0.159.1, featuring the addition of GPT-6.1 Sol as the new default model in its bundled, Amazon Bedrock Mantle, and Bedrock Runtime catalogs.

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openai codex just dropped a new rust release, v0.159.1, and it looks like gpt-6.1 sol is now the default model across their catalogs, including bedrock. big update!

huge news for openai codex users: gpt-6.1 sol is now the default! this came with the rust-v0.159.1 release, impacting bundled and amazon bedrock catalogs.

openai/codex release: rust-v0.159.1 name: 0.159.1 published: 2026-09-29T20:32:34Z url: https://github.com/openai/codex/releases/tag/rust-v0.159.1 ## New Features - Added GPT-6.1 Sol as the default model in the bundled catalog and Amazon Bedrock Mantle and Runtime catalogs. (#49323, #49342) ## Changelog Full Changelog: https://github.com/openai/codex/compare/rust-v0.159.0...rust-v0.159.1 - #49323 [0.159] Prepare 0.159.1 release backports @andrewgu-oai - #49342 [0.159] Backport GPT-6.1 Sol Bedrock catalogs @celia-oai