OpenAI’s GPT-5.3-Codex rolls out to Copilot with faster, agentic workflows
OpenAI's GPT-5.3-Codex is a 25% faster, more agentic coding model built for long-running, tool-driven workflows and is now rolling out across Codex surfaces and GitHub Copilot with stronger cybersecurity guardrails. OpenAI positions the model for multi-step coding and broader "computer use" with SOTA benchmark results and notes early versions helped build and operate itself [Pulse 2.0](https://pulse2.com/openai-reveals-gpt-5-3-codex-a-faster-agentic-coding-model-built-for-long-running-work/)[^1] and [AI-360](https://www.ai-360.online/openai-launches-gpt-5-3-codex-extending-agentic-coding-and-real-time-steering/)[^2]. GitHub confirms GPT-5.3-Codex is GA in Copilot (Pro/Business/Enterprise) across VS Code, web, mobile, CLI, and the Coding Agent with an admin-enabled policy toggle and gradual rollout [GitHub Changelog](https://github.blog/changelog/2026-02-09-gpt-5-3-codex-is-now-generally-available-for-github-copilot/)[^3], while OpenAI channels have it now with API access "soon" and a new Trusted Access for Cyber pilot [Pulse 2.0](https://pulse2.com/openai-reveals-gpt-5-3-codex-a-faster-agentic-coding-model-built-for-long-running-work/)[^1] and [ITP.net](https://www.itp.net/ai-automation/openai-launches-gpt-5-3-codex-the-new-era-of-ai-powered-coding-and-beyond)[^4]. [^1]: Adds: Core capabilities, benchmark highlights, safety posture, availability across Codex app/CLI/IDE/web, and NVIDIA GB200 NVL72 infra. [^2]: Adds: Real-time steering in extended runs and cybersecurity classification/pilot context for enterprise adoption. [^3]: Adds: Concrete Copilot GA details, supported surfaces, plans, rollout, and admin policy enablement. [^4]: Adds: Additional context on broader professional task coverage and API timing.