GPT-5.6 family added to codex

OpenAI added the GPT-5.6 family to its Codex repository in a commit on June 26, 2026, updating the codebase with 2 commits across 4 files. The change was contributed by a single developer, marking a new model family integration.

Permalink https://github.com/openai/codex/compare/openai:390b0d2...openai:e2b6046 Comparing changes Choose two branches to see what’s changed or to start a new pull request. If you need to, you can also or learn more about diff comparisons https://docs.github.com/pull-requests/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/about-comparing-branches-in-pull-requests three-dot-and-two-dot-git-diff-comparisons . Open a pull request Create a new pull request by comparing changes across two branches. If you need to, you can also . Learn more about diff comparisons here https://docs.github.com/pull-requests/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/about-comparing-branches-in-pull-requests three-dot-and-two-dot-git-diff-comparisons . ... - 2 commits - 4 files changed - 1 contributor Commits on Jun 26, 2026 Loading This comparison is taking too long to generate. Unfortunately it looks like we can’t render this comparison for you right now. It might be too big, or there might be something weird with your repository. You can try running this command locally to see the comparison on your machine: git diff rust-v0.142.2...rust-v0.142.3