GPT 5.1 Codex Max
By openai
openai/gpt-5.1-codex-maxGPT‑5.1-Codex-Max is purpose-built for agentic coding.
ReleasedNov 19, 2025
Pricing
Pricing (Input)$1.25/M
Pricing (Output)$10.00/M
CachingYes
Limits
Context Length400K
Max Output Tokens128K
Input Modalities
TextSupported
ImageSupported
PDFSupported
AudioNot supported
Output Modalities
TextSupported
ImageNot supported
AudioNot supported
Features
ReasoningSupported
ToolsSupported
TemperatureSupported