openaimodel

gpt-5.1-codex-max

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Best for

Code GenerationDebugging

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Context Window

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Input Cost

Free

Output Cost

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Latency p50

43ms

Pricing Details

Standard Pricing

Input (per 1M tokens)

$0.00

Output (per 1M tokens)

$0.00

Hallucination Score™ (est.)

Community reliability estimate · not official

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Not yet rated

About this score: Community-estimated based on user reports and publicly available benchmark data (e.g. TruthfulQA). This is not an official score from the model provider. Scores may be inaccurate — always verify with the official leaderboard before making production decisions.

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Input & output cost per 1M tokens over time

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Provider

openai

Usage & Examples

Learn how to use gpt-5.1-codex-max

✓Complex reasoning and analysis

✓Customer support automation

✓Content generation and editing

✓Code review and debugging

✓Research summarization

💡 Tip: Start with the sample prompts above to see how gpt-5.1-codex-max works best.

Community Prompts

Proven prompts shared by the community for this model

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