GPT-5 Codex
gpt-5-codex
ProprietaryMultimodal
About
GPT-5 Codex is OpenAI's coding-specialized variant of GPT-5, optimized for software engineering workflows, code generation, and agentic coding tasks at 400K context.
GPT-5 Codex has a 400K-token context window.
Capabilities
VisionMultimodalReasoningFunction CallingTool UseStructured OutputsCode Execution
