You can now access GPT 5.2 Codex with Vercel's and no other provider accounts required. GPT 5.2 Codex combines GPT 5.2's strength in professional knowledge work with GPT 5.1 Codex Max's agentic coding capabilities.AI Gateway GPT 5.2 Codex is better at working on long running coding tasks compared to predecessors and can handle more complex tasks like large refactors and migrations more reliably. The model has stronger vision performance for more accurate processing of screenshots and charts that are shared while coding. GPT 5.2 Codex also surpasses GPT 5.1 Codex Max in cyber capabilities and outperformed the previous model in OpenAI's Professional Capture-the-Flag (CTF) cybersecurity eval.

To use the GPT 5.2 Codex, with the , set the model to :AI SDKopenai/gpt-5.2-codex AI Gateway provides a unified API for calling models, tracking usage and cost, and configuring retries, failover, and performance optimizations for higher-than-provider uptime. It includes built-in , , and intelligent with automatic retries.observabilityBring Your Own Key supportprovider routing Learn more about , view the or try it in our .AI GatewayAI Gateway model leaderboardmodel playground Read more