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claude-code-proxy/README.md
Rahul Sengottuvelu 27b95effbf fix
2025-03-18 20:41:34 -04:00

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Claude Code but with OpenAI Models 🧙‍♂️🔄 ¯\(ツ)/¯

Use Claude Code with OpenAI Models 🤝

A proxy server that lets you use Claude Code with OpenAI models like GPT-4o. 🌉

Why Use This? 🤔

  • Why not? ¯\(ツ)/¯

Quick Start ⚡

Prerequisites

  • OpenAI API key 🔑

Setup 🛠️

  1. Clone this repository:

    git clone https://github.com/1rgs/claude-code-openai.git
cd claude-code-openai

  2. Install UV:

     curl -LsSf https://astral.sh/uv/install.sh | sh

  3. Configure your API keys: Create a .env file with:

    OPENAI_API_KEY=your-openai-key

  4. Start the proxy server:

    uv run uvicorn server:app --host 0.0.0.0 --port 8082

Using with Claude Code 🎮

  1. Install Claude Code (if you haven't already):

    npm install -g @anthropic-ai/claude-code

  2. Connect to your proxy:

    ANTHROPIC_BASE_URL=http://localhost:8082 DISABLE_PROMPT_CACHING=1 claude

  3. That's it! Your Claude Code client will now use OpenAI models through the proxy. 🎯

Model Mapping 🗺️

The proxy automatically maps Claude models to OpenAI models:

Claude Model OpenAI Model
haiku gpt-4o-mini
sonnet o3-mini

You can customize these mappings in server.py by editing the validate_model function. 🔧

How It Works 🧩

This proxy works by:

  1. Receiving requests in Anthropic's API format 📥
  2. Translating the requests to OpenAI format via LiteLLM 🔄
  3. Sending the translated request to OpenAI 📤
  4. Converting the response back to Anthropic format 🔄
  5. Returning the formatted response to the client ✅

The proxy handles both streaming and non-streaming responses, maintaining compatibility with all Claude clients. 🌊

Contributing 🤝

Contributions are welcome! Please feel free to submit a Pull Request. 🎁