Model Details

GPT-5.1 API

OpenAI's flagship model for coding and reasoning. Balanced performance for general-purpose AI applications and development tools.

Pricing Comparison

ProviderInput / 1MOutput / 1M
OpenAI Official$1.25$10.00
Crouter$0.50$1.25$4.00$10.00
You Save60%60%

All prices per 1M tokens. No hidden fees, no monthly minimums.

Key Features

400K Context Window

Process large codebases and long conversations. Sufficient context for most development tasks and document analysis.

Fast Response Times

Optimized for speed with low latency. Quick responses for interactive coding assistants and real-time applications.

Strong Coding Abilities

Excellent code generation, debugging, and refactoring. Understands multiple programming languages and frameworks.

Function Calling

Native support for function calling and tool use. Build agentic applications with structured outputs.

Perfect For

AI Coding Assistants

Power tools like Cursor, Windsurf, and Aider with reliable code generation. The 400K context handles medium-sized projects.

Code Review Automation

Analyze pull requests and suggest improvements. Identifies bugs, security issues, and code quality problems.

Technical Documentation

Generate API docs, README files, and code comments. Maintains consistent style across documentation.

General Purpose AI

Versatile model for chatbots, content generation, and data analysis. Balanced cost and performance for most use cases.

Technical Specifications

Model IDgpt-5.1
Context Window400,000 tokens
API FormatOpenAI Chat Completions (/v1/chat/completions)
StreamingYes (SSE)
Function CallingYes
JSON ModeYes
Rate Limit70 requests/minute

Quick Start

curl https://api.crouter.dev/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-5.1",
    "messages": [
      {"role": "user", "content": "Write a Python function to sort a list"}
    ]
  }'

View full documentation for more examples and integration guides.

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