Codex - 1

2026 (4)

April (3)

github: Model selection for Claude and Codex agents on github.com

GitHub

2026-04-14

GitHub.com now lets users select the model when starting Claude and Codex third-party coding agent runs. The feature is available for these agents, similar to Copilot cloud agent.

github: Dependabot alerts are now assignable to AI agents for remediation

GitHub

2026-04-07

Dependabot alerts can now be assigned to AI coding agents for remediation, including Copilot, Claude, and Codex. This is intended for vulnerabilities that require code changes beyond a simple dependency version update.

github: GPT-5.1 Codex, GPT-5.1-Codex-Max, and GPT-5.1-Codex-Mini deprecated

GitHub

2026-04-03

GitHub deprecated GPT-5.1 Codex, GPT-5.1-Codex-Max, and GPT-5.1-Codex-Mini across all GitHub Copilot experiences on April 1, 2026. The change applies to Copilot Chat, inline edits, ask and agent modes, and code completions.

March (1)

github: GPT-5.3-Codex long-term support in GitHub Copilot

GitHub

2026-03-18

GitHub introduced GPT-5.3-Codex as a long-term support (LTS) model for GitHub Copilot, aimed at giving enterprises a stable option for internal security and safety reviews. The LTS commitment is available for Copilot Business and Copilot plans.