# GPT-5.1 Codex Max

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 workflows spanning software engineering, mathematics, and research. 
GPT-5.1-Codex-Max delivers faster performance, improved reasoning, and higher token efficiency across the development lifecycle. 

## Model Information

- **Organization**: [Azure](/llm.txt)
- **Slug**: gpt-5-1-codex-max
- **Available at Providers**: 30
- **Release Date**: December 4, 2025

## Providers

| Provider | Name | $ Input (per 1M) | $ Output (per 1M) | Free | Link |
|----------|------|-----------------|------------------|------|------|
| [AIHubMix](/llm/aihubmix.txt) | gpt-5.1-codex-max | 1.25 | 10.00 |  | [View](https://aihubmix.com/model/gpt-5.1-codex-max) |
| [Factory.ai](/llm/factoryai.txt) | GPT-5.1-Codex-Max |  |  |  |  |
| [GitHub Copilot](/llm/githubcopilot.txt) | GPT-5.1-Codex-max | 0.00 | 0.00 | Yes |  |
| [Azure OpenAI](/llm/azure.txt) | GPT-5.1 Codex Max | 1.25 | 10.00 |  |  |
| [OpenAI](/llm/openai.txt) | GPT-5.1 Codex Max | 1.25 | 10.00 |  |  |
| [Nano-GPT](/llm/nanogpt.txt) | GPT 5.1 Codex Max |  |  |  |  |
| [OpenRouter](/llm/openrouter.txt) | GPT-5.1-Codex-Max | 1.25 | 10.00 |  | [View](https://openrouter.ai/openai/gpt-5.1-codex-max-20251204) |
| [OpenCode Zen](/llm/opencode.txt) | gpt-5.1-codex-max | 1.25 | 10.00 |  |  |
| [Poe](/llm/poe.txt) | GPT-5.1-Codex-Max | 1.10 | 9.00 |  | [View](https://poe.com/gpt-5.1-codex-max/api) |
| [ValorGPT](/llm/valorgpt.txt) | GPT-5.1-Codex-Max |  |  |  | [View](https://www.valorgpt.com/models/openai-gpt-5.1-codex-max) |
| [Vercel AI Gateway](/llm/vercel.txt) | GPT 5.1 Codex Max | 1.25 | 10.00 |  |  |
| [Vivgrid](/llm/vivgrid.txt) |  | 1.25 | 10.00 |  |  |
| [Yupp](/llm/yupp.txt) | GPT-5.1 Codex Max |  |  |  |  |
| [Yupp](/llm/yupp.txt) | GPT-5.1 Codex Max (OpenRouter) |  |  |  |  |
| [JetBrains AI](/llm/jetbrains.txt) | GPT-5.1-Codex-Max |  |  |  | [View](https://www.jetbrains.com/help/ai-assistant/supported-llms.html) |
| [Kilo Code](/llm/kilocode.txt) | OpenAI: GPT-5.1-Codex-Max | 1.25 | 10.00 |  |  |
| [Roo Code](/llm/roocode.txt) | GPT-5.1-Codex-Max | 1.25 | 10.00 |  | [View](https://roocode.com) |
| [Azure AI Services](/llm/azurecognitiveservices.txt) | GPT-5.1 Codex Max | 1.25 | 10.00 |  |  |
| [Cursor](/llm/cursor.txt) | GPT-5.1 Codex Max |  |  |  | [View](https://cursor.com/docs/models) |
| [Arena AI](/llm/arenaai.txt) |  |  |  |  |  |
| [Jiekou.AI](/llm/jiekou.txt) | gpt-5.1-codex-max | 1.13 | 9.00 |  |  |
| [Warp](/llm/warp.txt) | GPT-5.1 Codex Max |  |  |  | [View](https://docs.warp.dev/agent-platform/capabilities/model-choice) |
| [Blackbox AI](/llm/blackboxai.txt) | blackboxai/openai/gpt-5.1-codex-max |  |  |  |  |
| [CometAPI](/llm/cometapi.txt) | GPT 5.1 Codex Max | 1.00 | 8.00 |  |  |
| [Windsurf](/llm/windsurf.txt) | GPT-5.1-Codex Max (Low Reasoning) | 0.00 | 0.00 | Yes |  |
| [Windsurf](/llm/windsurf.txt) | GPT-5.1-Codex Max (Medium Reasoning) |  |  |  |  |
| [Windsurf](/llm/windsurf.txt) | GPT-5.1-Codex Max (High Reasoning) |  |  |  |  |
| [ApiYI](/llm/apiyi.txt) | gpt-5.1-codex-max |  |  |  |  |
| [WaveSpeed AI](/llm/wavespeed.txt) | gpt-5.1-codex-max | 1.38 | 11.00 |  |  |
| [Writingmate](/llm/writingmate.txt) | OpenAI: GPT-5.1-Codex-Max |  |  |  | [View](https://writingmate.ai/models/openai/gpt-5.1-codex-max) |

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