Models

DeepSeek Chat is a general-purpose conversational model with strong coding, reasoning and Chinese-English instruction following.

DeepSeek Reasoner is optimized for visible reasoning, complex problem solving and multi-step technical work.

DeepSeek V4 Flash is the low-cost V4 route with 1M context, thinking and non-thinking modes, tool calls and JSON output.

DeepSeek V4 Pro is the larger V4 route for harder reasoning, coding and long-context analysis workloads.