DS2API Exposes DeepSeek Web as OpenAI/Claude/Gemini-Compatible APIs
DS2API is a reverse-engineered Go middleware project that exposes DeepSeek's Web chat interface as fully wire-compatible OpenAI, Anthropic Claude, and Gemini API endpoints. It maps claude-sonnet-4-6 to DeepSeek V4 Flash and claude-opus-4-6 to DeepSeek V4 Pro, enabling drop-in access via existing SDKs without a paid API key. The project includes multi-account rotation, queue management, native Go PoW implementation, and supports Vercel, Docker, and systemd deployment. The README carries extensive TOS disclaimers and frames use as educational/learning only.
Why It Matters
DS2API is notable not for its production viability (the reverse-engineering and TOS risk make it unsuitable for production) but for what it signals: significant developer demand for free or low-cost API access to DeepSeek V4-level capability, and market awareness that DeepSeek's web interface provides quality comparable to paid frontier APIs. It also demonstrates how quickly unofficial compatibility layers emerge around high-quality open models.