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OpenAI: GPT-5.1-Codex-Max
GPT-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...
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Rank
391K
Context Window
$1.25
Min Input /1M
$10.00
Min Output /1M
Model Info
| Model ID | openai-gpt-5-1-codex-max |
| Modality | text+image->text |
| Context Window | 391K tokens |
| Platforms | OR |
Usage & Rankings
| Rank | Unranked |
| Weekly Usage | — |
Input
$1.250
/ 1M tokens
Output
$10.000
/ 1M tokens
Round Trip
$11.25
/ 1M tokens
Value Rating
🔴
🔴 Premium — best for quality-critical tasks
About OpenAI: GPT-5.1-Codex-Max
OpenAI: GPT-5.1-Codex-Max is a large language model with a 391K token context window.
The best available input price is $1.250/1M tokens and output price is $10.000/1M tokens, with a round-trip cost of $11.25/1M tokens.