Text Models

Text models use POST /v1/responses or compatible POST /v1/chat/completions, depending on the model. They share the same HiAPI API key as media models, but do not use the asynchronous /v1/tasks request shape.

Model	Best for	Endpoint
DeepSeek V4 Pro	Complex reasoning, coding Agents, and long-context work	POST /v1/responses + Chat compatible
DeepSeek V4 Flash	High-throughput generation, reasoning, coding, and Agent workflows	POST /v1/chat/completions

Start with the Responses guide or Chat Completions guide, then compare the AI Text APIs collection.