GPT 5.1 Codex Max API Pricing 2026
Compare pricing, benchmarks, and providers for GPT 5.1 Codex Max. Find the best value for your use case.
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Overview
GPT 5.1 Codex Max was released on December 4, 2025. Pricing starts at $1.25 per million input tokens and $10.00 per million output tokens. The model supports a context window of up to 400K tokens. API access is available through OpenAI.
Pricing Comparison
Compare GPT 5.1 Codex Max with 10 similar models by price.
Current Pricing (per 1M tokens)
11 models
Provider | Model | Input $/M | Output $/M | Coding | MMLU | GPQA | Context | Actions |
|---|---|---|---|---|---|---|---|---|
$1.250 | $10.000 | — | — | — | 400,000 | |||
QW | $1.000 | $5.000 | — | — | — | 1,000,000 | ||
$1.000 | $1.000 | — | — | — | 131,072 | |||
$1.100 | $4.400 | — | — | — | 200,000 | |||
$1.100 | $4.400 | 85.9 | 83.2 | 78.4 | 200,000 | |||
$1.100 | $4.400 | 73.4 | 80.2 | 77.3 | 200,000 | |||
$1.100 | $4.400 | 71.7 | 79.1 | 74.8 | 200,000 | |||
QW | $1.200 | $6.000 | — | — | — | 262,144 | ||
$1.200 | $1.200 | 16.9 | 69.0 | 46.5 | 131,072 | |||
QW | $1.200 | $6.000 | 76.7 | 84.1 | 76.4 | 262,144 | ||
$1.250 | $10.000 | 77.0 | 83.7 | 82.2 | 1,048,576 |
* Some models use tiered pricing based on prompt length. Displayed prices are for prompts ≤ 200k tokens.
Compare Providers
GPT 5.1 Codex Max is available from multiple providers with different pricing and availability.
Provider Pricing
2 models
Provider | Input $/M | Output $/M | Uptime |
|---|---|---|---|
OpenAI Best Price | $1.250 | $10.000 | 100.0% |
A Azure Best Price | $1.250 | $10.000 | - |
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