GPT-5.1 Codex Max
Model Information
| Slug | gpt-5-1-codex-max |
|---|---|
| LLM.txt | View |
| Release Date | December 4, 2025 |
Organization
| Name | Azure |
|---|
Model 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 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.
GPT-5.1-Codex-Max delivers faster performance, improved reasoning, and higher token efficiency across the development lifecycle.
Available at 30 Providers
| Provider | Type | Model Name | Original Model | Input ($/1M) | Output ($/1M) | Free | Actions | |
|---|---|---|---|---|---|---|---|---|
|
GitHub Copilot |
GPT-5.1-Codex-max
|
gpt-5.1-codex-max
|
$0.00 | $0.00 | |||
|
Windsurf |
Code
|
GPT-5.1-Codex Max (Low Reasoning)
|
gpt-5.1-codex-max-low-reasoning
|
$0.00 | $0.00 | ||
|
CometAPI |
GPT 5.1 Codex Max
|
gpt-5.1-codex-max
|
$1.00 | $8.00 | |||
|
Poe |
GPT-5.1-Codex-Max
|
gpt-5.1-codex-max
|
$1.10 | $9.00 | |||
|
Jiekou.AI |
gpt-5.1-codex-max
|
gpt-5.1-codex-max
|
$1.13 | $9.00 | |||
|
AIHubMix |
gpt-5.1-codex-max
|
gpt-5.1-codex-max
|
$1.25 | $10.00 | |||
|
Azure OpenAI |
GPT-5.1 Codex Max
|
gpt-5.1-codex-max
|
$1.25 | $10.00 | |||
|
OpenAI |
Chat
Code
|
GPT-5.1 Codex Max
|
gpt-5.1-codex-max
|
$1.25 | $10.00 | ||
|
OpenRouter |
Chat
Code
|
GPT-5.1-Codex-Max
|
openai/gpt-5.1-codex-max
|
$1.25 | $10.00 | ||
|
OpenCode Zen |
Chat
Code
|
gpt-5.1-codex-max
|
gpt-5.1-codex-max
|
$1.25 | $10.00 | ||
|
Vercel AI Gateway |
GPT 5.1 Codex Max
|
gpt-5.1-codex-max
|
$1.25 | $10.00 | |||
|
Vivgrid |
gpt-5.1-codex-max
|
$1.25 | $10.00 | ||||
|
Kilo Code |
Code
|
OpenAI: GPT-5.1-Codex-Max
|
openai/gpt-5.1-codex-max
|
$1.25 | $10.00 | ||
|
Roo Code |
Code
|
GPT-5.1-Codex-Max
|
openai/gpt-5.1-codex-max
|
$1.25 | $10.00 | ||
|
Azure AI Services |
GPT-5.1 Codex Max
|
gpt-5.1-codex-max
|
$1.25 | $10.00 | |||
|
WaveSpeed AI |
Chat
Code
|
gpt-5.1-codex-max
|
openai/gpt-5.1-codex-max
|
$1.38 | $11.00 | ||
|
Factory.ai |
Code
|
GPT-5.1-Codex-Max
|
gpt-5.1-codex-max
|
- | - | ||
|
Nano-GPT |
GPT 5.1 Codex Max
|
openai/gpt-5.1-codex-max
|
- | - | |||
|
ValorGPT |
GPT-5.1-Codex-Max
|
openai-gpt-5.1-codex-max
|
- | - | |||
|
Yupp |
Chat
|
GPT-5.1 Codex Max
|
gpt-5.1-codex-max
|
- | - | ||
|
|
Yupp |
Chat
|
GPT-5.1 Codex Max (OpenRouter)
|
openai/gpt-5.1-codex-max
|
- | - | ||
|
JetBrains AI |
Code
|
GPT-5.1-Codex-Max
|
GPT-5.1-Codex-Max
|
- | - | ||
|
Cursor |
Code
|
GPT-5.1 Codex Max
|
gpt-5.1-codex-max
|
- | - | ||
|
Arena AI |
Chat
|
gpt-5.1-codex-max
|
- | - | |||
|
Warp |
Code
|
GPT-5.1 Codex Max
|
gpt5-1codexmax
|
- | - | ||
|
Blackbox AI |
Code
|
blackboxai/openai/gpt-5.1-codex-max
|
blackboxai/openai/gpt-5.1-codex-max
|
- | - | ||
|
|
Windsurf |
Code
|
GPT-5.1-Codex Max (Medium Reasoning)
|
gpt-5.1-codex-max-medium-reasoning
|
- | - | ||
|
|
Windsurf |
Code
|
GPT-5.1-Codex Max (High Reasoning)
|
gpt-5.1-codex-max-high-reasoning
|
- | - | ||
|
ApiYI |
Chat
Code
|
gpt-5.1-codex-max
|
gpt-5.1-codex-max
|
- | - | ||
|
Writingmate |
Chat
Code
|
OpenAI: GPT-5.1-Codex-Max
|
openai/gpt-5.1-codex-max
|
- | - |