GPT-5.1 Codex Max

Older versionReplace withGPT-5.6 SolNewer version
GPT-5.1 Codex Max
Compare in
—per task?
$1.25 / $10per 1M in / out?cache $0.13
—output speed?
400Kcontext

Benchmarks

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FAQ

How much does GPT-5.1 Codex Max cost?›

$1.25 per 1M input tokens and $10 per 1M output tokens; cached input $0.13 per 1M (cheapest host: Azure).

Is GPT-5.1 Codex Max free to use?›

There is no free API; the cheapest paid price is $1.25 per 1M input tokens.

How can I use GPT-5.1 Codex Max?›

Through the API of Azure.

What is the context window of GPT-5.1 Codex Max?›

400K tokens, with up to 128K output tokens.

When was GPT-5.1 Codex Max released? Is there a newer version?›

It has been superseded by GPT-5.6 Sol.

Can GPT-5.1 Codex Max read images?›

It accepts text and images as input.

What is GPT-5.1 Codex Max?›

GPT-5.1 Codex Max is a language model from OpenAI.