Your First API Call | DeepSeek API Docs The DeepSeek API is supported by many popular AI agent and coding assistant tools If you use tools like Claude Code, GitHub Copilot, or OpenCode, you can use DeepSeek as the backend model directly — no code required
DeepSeek API Documentation [API Docs] | Complete Reference 2026 Complete developer reference for the DeepSeek API The API is compatible with the OpenAI ChatCompletions format and the Anthropic Messages format — change two lines of code to migrate from either Access powerful reasoning with V4-Pro and high-speed inference with V4-Flash