OpenAI Releases GPT-5.4 With Codex Integration

Last week, OpenAI released GPT-5.4 across ChatGPT (as GPT-5.4 Thinking), the OpenAI API, and Codex, adding native computer-use capabilities and a 1,000,000-token context window. The model consolidates frontier reasoning, coding, and agentic workflows with improved token efficiency, tool search, and professional task handling. Developers can access GPT-5.4 via ChatGPT, Codex, the API, and DigitalOcean's Gradient serverless inference for long-horizon agents and production workflows.