Models / OpenAI
GPT-5.1-Codex-Max
by OpenAI ·
openai/gpt-5.1-codex-maxGPT-5.1-Codex-Max is OpenAI’s latest agentic coding model, designed for long-running, high-context software development tasks. It is based on an updated version of the 5.1 reasoning stack and trained on agentic...
reasoningtool-usevisionreleased 2025-12-04
Legal score · raw
-
not yet benchmarked
Context
400K
max output 128K
Input
$1.56
per 1M tokens
Output
$12.50
per 1M tokens
Suite cost
-
no run recorded
Benchmark results
This model has not been run through the suite yet. See Humanity's Last Lawsuit for the benchmark models are ranked on.