GPT 5.1 Codex Max
Review GPT 5.1 Codex Max on key metrics including price, context length, throughput, and model features.
AuthorOpenAI
Context Length400k
Supports Tools
GPT-5.1-Codex-Max is OpenAI’s newest agentic coding model, created for extended, high-context software development tasks. Built on an enhanced 5.1 reasoning stack, it’s been trained with agentic workflows covering software engineering, mathematics, and research. GPT-5.1-Codex-Max offers faster performance, better reasoning abilities, and increased token efficiency throughout the development process.
Activity
Last 14 daysNot enough activity yet
Prompt
0Completion
0Total
-Startup
Startup
Latency (p50)-
Throughput (p50)-
Pricing
Input$0.63/M tokens
Output$5.00/M tokens
Cached input$0.06/M tokens
Features
Input Modalitiestext, image
Output Modalitiestext
Supported EndpointsChat Completions
Vision
Supports Tools