DeepSeek launches v4 API with OpenAI/Anthropic compatibility
Original: DeepSeek v4
Why This Matters
Expands AI model competition with enterprise-ready API infrastructure
DeepSeek releases v4 API offering deepseek-v4-flash and deepseek-v4-pro models with OpenAI/Anthropic SDK compatibility. Features thinking mode, reasoning effort controls, and will deprecate older models in 2026.
DeepSeek has launched its v4 API with two new models: deepseek-v4-flash and deepseek-v4-pro. The API maintains compatibility with OpenAI and Anthropic SDKs by using compatible formats and base URLs. Key features include thinking mode capabilities and reasoning effort controls with high/low settings. The platform will deprecate older models deepseek-chat and deepseek-reasoner on July 24, 2026, with these models currently mapping to non-thinking and thinking modes of v4-flash respectively. The API supports standard chat completions, streaming responses, and integrates with existing OpenAI/Anthropic-compatible tools and frameworks.