OpenAI: GPT-5.1-Codex-Max
🇺🇸 OpenAI · GPT-5.1-Codex-Max
Input Price $1.25 per million tokens NT$40.0
Output Price $10.00 per million tokens NT$320
Context Window 400K tokens Output limit: 128K
OpenRouter Route Price Please verify with official pricing pages
| Dimension | Unit | Price (USD) |
|---|---|---|
| Input | per 1M tokens | $1.25 |
| Output | per 1M tokens | $10.00 |
| Cached Input | per 1M tokens | $0.125 |
| Web Search | per search | $0.010 |
- Provider
- OpenAI (OpenAI)
- Model Family
- GPT-5.1-Codex-Max
- Version String
- openai/gpt-5.1-codex-max
- Status
- active
- Modality
- text, image
- Context Window
- 400,000 tokens
- Output Limit
- 128,000 tokens
90-Day Price Trend
Input / Output price (USD per 1M tokens)
Past 90 days of records; every price change is shown here
| Date | Dimension | Price (USD) | Source |
|---|---|---|---|
| 2026-05-27 | Web Search | $0.010 | openrouter |
| 2026-05-27 | Cached Input | $0.125 | openrouter |
| 2026-05-27 | Output | $10.00 | openrouter |
| 2026-05-27 | Input | $1.25 | openrouter |
| 2026-05-26 | Web Search | $0.010 | openrouter |
| 2026-05-26 | Cached Input | $0.125 | openrouter |
| 2026-05-26 | Output | $10.00 | openrouter |
| 2026-05-26 | Input | $1.25 | openrouter |
| 2026-05-25 | Web Search | $0.010 | openrouter |
| 2026-05-25 | Cached Input | $0.125 | openrouter |
| 2026-05-25 | Output | $10.00 | openrouter |
| 2026-05-25 | Input | $1.25 | openrouter |
| 2026-05-24 | Web Search | $0.010 | openrouter |
| 2026-05-24 | Cached Input | $0.125 | openrouter |
| 2026-05-24 | Output | $10.00 | openrouter |
| 2026-05-24 | Input | $1.25 | openrouter |
| 2026-05-23 | Web Search | $0.010 | openrouter |
| 2026-05-23 | Cached Input | $0.125 | openrouter |
| 2026-05-23 | Output | $10.00 | openrouter |
| 2026-05-23 | Input | $1.25 | openrouter |
| 2026-05-22 | Web Search | $0.010 | openrouter |
| 2026-05-22 | Cached Input | $0.125 | openrouter |
| 2026-05-22 | Output | $10.00 | openrouter |
| 2026-05-22 | Input | $1.25 | openrouter |
| 2026-05-22 | Web Search | $0.010 | openrouter |
| 2026-05-22 | Cached Input | $0.125 | openrouter |
| 2026-05-22 | Output | $10.00 | openrouter |
| 2026-05-22 | Input | $1.25 | openrouter |
| 2026-05-21 | Web Search | $0.010 | openrouter |
| 2026-05-21 | Cached Input | $0.125 | openrouter |
| 2026-05-21 | Output | $10.00 | openrouter |
| 2026-05-21 | Input | $1.25 | openrouter |
| 2026-05-20 | Web Search | $0.010 | openrouter |
| 2026-05-20 | Cached Input | $0.125 | openrouter |
| 2026-05-20 | Output | $10.00 | openrouter |
| 2026-05-20 | Input | $1.25 | openrouter |
| 2026-05-19 | Web Search | $0.010 | openrouter |
| 2026-05-19 | Cached Input | $0.125 | openrouter |
| 2026-05-19 | Output | $10.00 | openrouter |
| 2026-05-19 | Input | $1.25 | openrouter |
| 2026-05-18 | Web Search | $0.010 | openrouter |
| 2026-05-18 | Cached Input | $0.125 | openrouter |
| 2026-05-18 | Output | $10.00 | openrouter |
| 2026-05-18 | Input | $1.25 | openrouter |
| 2026-05-17 | Web Search | $0.010 | openrouter |
| 2026-05-17 | Cached Input | $0.125 | openrouter |
| 2026-05-17 | Output | $10.00 | openrouter |
| 2026-05-17 | Input | $1.25 | openrouter |
| 2026-05-16 | Web Search | $0.010 | openrouter |
| 2026-05-16 | Cached Input | $0.125 | openrouter |
Description
GPT-5.1-Codex-Max is OpenAI’s latest agentic coding model, designed for long-running, high-context software development tasks. It is based on an updated version of the 5.1 reasoning stack and trained on agentic...
Key Insights
Key data points from this page for quick reference and citation.
- OpenAI: GPT-5.1-Codex-Max Input price: $1.25/M tokens
- OpenAI: GPT-5.1-Codex-Max Output price: $10/M tokens
- Context window: 400,000 tokens
- Provider: OpenAI
- Model family: GPT-5.1-Codex-Max
- Modalities: text, image
- Data source: OpenRouter, updated daily