name: DeepSeek Chat Completion API Capabilities
description: >-
  Capabilities exposed by the DeepSeek Chat Completion API for generating
  conversational responses with the deepseek-chat and deepseek-reasoner
  models.
capabilities:
  - name: Create Chat Completion
    description: Generate a model response for a given chat conversation, with optional tool calling, JSON mode, and streaming.
    operationId: createChatCompletion
    method: POST
    path: /chat/completions
use_cases:
  - name: Conversational assistants
    description: Build chat assistants and copilots powered by deepseek-chat or deepseek-reasoner.
  - name: Reasoning workflows
    description: Use the deepseek-reasoner model for tasks that require step-by-step problem solving.
  - name: Tool calling
    description: Have the model invoke developer-defined tools and functions to interact with external systems.
  - name: Structured outputs
    description: Request JSON-formatted output for downstream parsing and integration.
  - name: OpenAI-compatible migration
    description: Repoint existing OpenAI Chat Completions clients at api.deepseek.com to evaluate or switch to DeepSeek models.