GPT 5.1 Codex Mini API Pricing 2026
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Overview
GPT 5.1 Codex Mini was released on November 13, 2025. Pricing starts at $0.250 per million input tokens and $2.00 per million output tokens. The model supports a context window of up to 400K tokens. API access is available through OpenAI.
Pricing Comparison
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Current Pricing (per 1M tokens)
1 models
Provider | Model | Input $/M | Output $/M | Coding | MMLU | GPQA | Context | Actions |
|---|---|---|---|---|---|---|---|---|
$0.250 | $2.000 | 83.6 | 82.0 | 81.3 | 400,000 |
* Some models use tiered pricing based on prompt length. Displayed prices are for prompts ≤ 200k tokens.
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