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.
API Usage Examples
OpenAI Compatible Endpoint
Use this endpoint with any OpenAI-compatible library. Model: OpenAI: GPT-5.1-Codex-Max (openai/gpt-5.1-codex-max)
curl https://api.ridvay.com/v1/chat/completions -H "Content-Type: application/json" -H "Authorization: Bearer YOUR_API_KEY" -d '{
"model": "openai/gpt-5.1-codex-max",
"messages": [
{
"role": "user",
"content": "Explain the capabilities of the OpenAI: GPT-5.1-Codex-Max model"
}
],
"temperature": 0.7,
"max_tokens": 1024
}'Supported Modalities
- Text
- Images
API Pricing
- Input: 1.25$ / 1M tokens
- Output: 10$ / 1M tokens
Token Limits
- Max Output: 128,000 tokens
- Max Context: 400,000 tokens
Subscription Tiers
- free
- pro
- ultimate