openapi: 3.2.0
info:
  title: Xiaomi MiMo AI Chat API
  description: The Xiaomi MiMo AI API provides OpenAI-compatible access to Xiaomi's MiMo large language model family. Supports chat completions with reasoning, coding, multimodal, and text-to-speech model variants. Compatible with OpenAI SDKs and standard tooling.
  version: 1.0.0
  contact:
    name: Xiaomi MiMo Developer
    url: https://platform.xiaomimimo.com/
servers:
- url: https://api.xiaomimimo.com
  description: Xiaomi MiMo AI API
security:
- apiKeyAuth: []
tags:
- name: Chat Completions
paths:
  /v1/chat/completions:
    post:
      operationId: createChatCompletion
      summary: Create Chat Completion
      description: Creates a chat completion response from the specified MiMo model. The API is OpenAI-compatible and supports streaming, function calling, and multi-turn conversations. Available models include mimo-v2.5-pro, mimo-v2.5, mimo-v2-pro, mimo-v2-omni, mimo-v2-flash, and TTS variants.
      tags:
      - Chat Completions
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ChatCompletionRequest'
      responses:
        '200':
          description: Chat completion returned successfully.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ChatCompletionResponse'
        '400':
          description: Bad request. Invalid parameters.
        '401':
          description: Unauthorized. Invalid API key.
        '429':
          description: Rate limit exceeded.
components:
  schemas:
    ChatCompletionResponse:
      type: object
      properties:
        id:
          type: string
          description: Unique completion identifier.
        object:
          type: string
          example: chat.completion
        created:
          type: integer
          description: Unix timestamp of creation.
        model:
          type: string
          description: Model used for the completion.
        choices:
          type: array
          items:
            type: object
            properties:
              index:
                type: integer
              message:
                $ref: '#/components/schemas/ChatMessage'
              finish_reason:
                type: string
                enum:
                - stop
                - length
                - tool_calls
        usage:
          type: object
          properties:
            prompt_tokens:
              type: integer
            completion_tokens:
              type: integer
            total_tokens:
              type: integer
    ChatMessage:
      type: object
      required:
      - role
      - content
      properties:
        role:
          type: string
          enum:
          - system
          - user
          - assistant
          - tool
          description: The role of the message author.
        content:
          type: string
          description: The content of the message.
    ChatCompletionRequest:
      type: object
      required:
      - model
      - messages
      properties:
        model:
          type: string
          description: 'The MiMo model to use. Options include: mimo-v2.5-pro, mimo-v2.5, mimo-v2.5-tts, mimo-v2-pro, mimo-v2-omni, mimo-v2-flash.'
          example: mimo-v2.5-pro
        messages:
          type: array
          description: The conversation history as a list of messages.
          items:
            $ref: '#/components/schemas/ChatMessage'
        temperature:
          type: number
          minimum: 0
          maximum: 2
          description: Sampling temperature. Higher values increase randomness.
        max_tokens:
          type: integer
          description: Maximum number of tokens to generate.
        stream:
          type: boolean
          default: false
          description: If true, returns partial message deltas via server-sent events.
        top_p:
          type: number
          minimum: 0
          maximum: 1
          description: Nucleus sampling probability mass.
  securitySchemes:
    apiKeyAuth:
      type: apiKey
      in: header
      name: api-key
      description: API key obtained from the Xiaomi MiMo console.