Friday, August 21, 2026 · No. 390Prices synced 4 hours ago
All·AI·Model

The AI Model Price Index

GPT-5.1 Codex Max

by Ofox · family gpt-codex · listed Nov 2025RTV

Coding-optimized GPT model for repository edits, reviews, and agentic software work

Current rates USD per 1M tokens

Input$1.25
Output$10.00
Cache read$0.13
Cache write—

Against the market

Input price vs. maker flagships ($/1M tokens)
DeepSeek V4 ProDeepSeek V4 Pro: $0.435 per 1M tokens$0.435Gemini 3.7 FlashGemini 3.7 Flash: $0.75 per 1M tokens$0.75GPT-5.1 Codex MaxGPT-5.1 Codex Max: $1.25 per 1M tokens$1.25Mistral Medium 3.5Mistral Medium 3.5: $1.50 per 1M tokens$1.50Grok 4.6Grok 4.6: $2.00 per 1M tokens$2.00Qwen3.8 MaxQwen3.8 Max: $2.00 per 1M tokens$2.00Claude Opus 5Claude Opus 5: $5.00 per 1M tokens$5.00GPT-5.6 SolGPT-5.6 Sol: $5.00 per 1M tokens$5.00
Output price vs. maker flagships ($/1M tokens)
DeepSeek V4 ProDeepSeek V4 Pro: $0.87 per 1M tokens$0.87Gemini 3.7 FlashGemini 3.7 Flash: $3.75 per 1M tokens$3.75Grok 4.6Grok 4.6: $6.00 per 1M tokens$6.00Qwen3.8 MaxQwen3.8 Max: $6.00 per 1M tokens$6.00Mistral Medium 3.5Mistral Medium 3.5: $7.50 per 1M tokens$7.50GPT-5.1 Codex MaxGPT-5.1 Codex Max: $10.00 per 1M tokens$10.00Claude Opus 5Claude Opus 5: $25.00 per 1M tokens$25.00GPT-5.6 SolGPT-5.6 Sol: $30.00 per 1M tokens$30.00

On the record

Model id
openai/gpt-5.1-codex-max
Context window
256K tokens
Max output
128K tokens
Input modalities
text, image
Output modalities
text
Reasoning
yes
Tool calls
yes
Open weights
no
Knowledge cutoff
Sep 2024
Released
2025-11-13
Last updated
2025-11-13
Provider docs
ofox.ai/docs

Back of the envelope

≈

Also listed at

← All Ofox listings