Inworld Models API

openapi: 3.1.0
info:
  title: Inworld Models API
  description: >
    List every model available behind the Inworld platform — first-party TTS, STT,
    and Realtime models plus all third-party LLMs reachable through the LLM Router.
    Returns provider, model id, capabilities (chat, vision, tool use, speech,
    streaming), and pricing tier metadata for runtime discovery.
  version: v1
  contact:
    name: Inworld Support
    url: https://docs.inworld.ai/tts/resources/support
  license:
    name: Inworld Terms of Service
    url: https://inworld.ai/legal/terms-of-service
servers:
  - url: https://api.inworld.ai
    description: Inworld Production API
security:
  - BasicAuth: []
tags:
  - name: Models
    description: Discover available models.
paths:
  /v1/models:
    get:
      summary: List Models
      description: List models exposed by Inworld and the Router.
      operationId: listModels
      tags: [Models]
      responses:
        '200':
          description: Models returned.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListModelsResponse'
        '4XX':
          $ref: '#/components/responses/ErrorResponse'
components:
  securitySchemes:
    BasicAuth:
      type: http
      scheme: basic
  schemas:
    ListModelsResponse:
      type: object
      properties:
        data:
          type: array
          items:
            $ref: '#/components/schemas/Model'
    Model:
      type: object
      properties:
        id:
          type: string
        object:
          type: string
          enum: [model]
        provider:
          type: string
        family:
          type: string
        capabilities:
          type: array
          items:
            type: string
            enum: [chat, vision, audio, tts, stt, realtime, tool-use, streaming, embedding]
        contextWindow:
          type: integer
        maxOutputTokens:
          type: integer
        pricing:
          type: object
          properties:
            inputPricePer1M:
              type: number
            outputPricePer1M:
              type: number
            currency:
              type: string
              default: USD
    Error:
      type: object
      properties:
        code:
          type: integer
        message:
          type: string
  responses:
    ErrorResponse:
      description: Error response.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'