FlexAI Models API

openapi: 3.0.3
info:
  title: FlexAI Token Factory Audio Models API
  version: v1
  description: 'OpenAI-compatible inference API for FlexAI Token Factory. A single API key provides access to open models across text, code, reasoning, vision, embedding, image, video, and audio modalities, priced by usage per model. The API is a drop-in replacement for the OpenAI API: point the OpenAI SDK (or any OpenAI-compatible client) at the FlexAI base URL and supply a FlexAI API key. This specification captures the endpoints FlexAI documents as supported; some OpenAI endpoints (assistants, threads, runs, files, fine-tuning, batches) are explicitly not served by this endpoint.'
  contact:
    name: FlexAI
    url: https://docs.flex.ai
  termsOfService: https://flex.ai/terms-of-service
  x-provenance:
    generated: '2026-07-19'
    method: generated
    source: https://docs.flex.ai/inference-api/reference/openai-compatibility and https://flex.ai/llms.txt — generated from FlexAI's documented OpenAI-compatible endpoint surface. Not a provider-published OpenAPI file.
servers:
- url: https://tokens.flex.ai/v1
  description: FlexAI Token Factory (serverless inference)
security:
- bearerAuth: []
tags:
- name: Models
  description: Model catalog
paths:
  /models:
    get:
      operationId: listModels
      summary: List available models
      description: Return the live catalog of models served by FlexAI across all modalities, with category annotations (text, code, reasoning, vision, embedding, image, video, audio).
      tags:
      - Models
      responses:
        '200':
          description: The list of available models
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ModelList'
        '401':
          $ref: '#/components/responses/Unauthorized'
components:
  schemas:
    Model:
      type: object
      properties:
        id:
          type: string
        object:
          type: string
          example: model
        created:
          type: integer
        owned_by:
          type: string
    ErrorResponse:
      type: object
      properties:
        error:
          type: object
          properties:
            message:
              type: string
            type:
              type: string
            param:
              type: string
              nullable: true
            code:
              type: string
            doc_url:
              type: string
    ModelList:
      type: object
      properties:
        object:
          type: string
          example: list
        data:
          type: array
          items:
            $ref: '#/components/schemas/Model'
  responses:
    Unauthorized:
      description: Invalid or missing API key (error code `authentication_error`; includes a `doc_url` extension pointing at the auth docs).
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: 'FlexAI API key passed as a bearer token: `Authorization: Bearer $FLEXAI_API_KEY`. Create a key at https://tokens.flex.ai/signup.'