> ## Documentation Index
> Fetch the complete documentation index at: https://docs.opper.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# List Models

> OpenAI Models API compatible endpoint. Returns Opper LLM and embedding models in OpenAI's models.list shape so tools that point an OpenAI-compatible base URL at `/v3/compat` (gateways, n8n, LangChain, etc.) can discover the live catalogue without hardcoding model IDs. Each entry additionally carries OpenRouter-shaped `pricing` (USD per token) and `context_length`, plus an `opper` compliance summary (`region`, `country`, `zdr`, `gdpr_residency`, `verification`) so sync scripts can filter on residency/ZDR criteria in one call; full data-handling detail lives on `/v3/models?include=route`. Featured models first, then ID-ascending; no pagination, matching OpenAI.



## OpenAPI

````yaml get /v3/compat/models
openapi: 3.1.0
info:
  description: Schema-driven generative API that orchestrates LLM-powered workflows.
  title: Task API
  version: 3.0.0
servers:
  - description: Production
    url: https://api.opper.ai
  - description: Local development
    url: http://localhost:8080
security:
  - BearerAuth: []
tags:
  - description: Schema-driven function management and execution
    name: Functions
  - description: OpenAI-compatible chat completions
    name: Chat
  - description: OpenAI Responses API compatible endpoint
    name: Responses
  - description: Google-compatible interactions endpoint
    name: Interactions
  - description: Model registry and capabilities
    name: Models
  - description: Synchronous image generation
    name: Images
  - description: Text-to-speech and speech-to-text
    name: Audio
  - description: Asynchronous video generation
    name: Videos
  - description: Reusable file storage for media inputs and generated outputs
    name: Files
  - description: Async generation status and downloads
    name: Artifacts
  - description: OpenAI-compatible embeddings
    name: Embeddings
  - description: Recorded HTTP request/response generations
    name: Generations
  - description: System health and status
    name: System
  - description: Roundtable endpoint — fan out a query to multiple LLMs and combine results
    name: Roundtable
  - description: Web search, fetch, and other utility tools
    name: Tools
  - description: Caller identity, credits, and usage
    name: Account
paths:
  /v3/compat/models:
    get:
      tags:
        - Compatibility
      summary: List models (OpenAI-compatible)
      description: >-
        OpenAI Models API compatible endpoint. Returns Opper LLM and embedding
        models in OpenAI's models.list shape so tools that point an
        OpenAI-compatible base URL at `/v3/compat` (gateways, n8n, LangChain,
        etc.) can discover the live catalogue without hardcoding model IDs. Each
        entry additionally carries OpenRouter-shaped `pricing` (USD per token)
        and `context_length`, plus an `opper` compliance summary (`region`,
        `country`, `zdr`, `gdpr_residency`, `verification`) so sync scripts can
        filter on residency/ZDR criteria in one call; full data-handling detail
        lives on `/v3/models?include=route`. Featured models first, then
        ID-ascending; no pagination, matching OpenAI.
      operationId: listOpenAICompatModels
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/OpenAICompatModelsListResponse'
          description: Successful response
        '400':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
          description: Bad request
        '401':
          description: Unauthorized - missing or invalid API key
        '500':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
          description: Internal server error
components:
  schemas:
    OpenAICompatModelsListResponse:
      properties:
        data:
          items:
            properties:
              context_length:
                type: integer
              created:
                type: integer
              id:
                type: string
              object:
                type: string
              opper:
                properties:
                  country:
                    type: string
                  gdpr_residency:
                    type: string
                  region:
                    type: string
                  verification:
                    type: string
                  zdr:
                    type: string
                type: object
              owned_by:
                type: string
              pricing:
                properties:
                  completion:
                    type: string
                  input_cache_read:
                    type: string
                  input_cache_write:
                    type: string
                  input_cache_write_1h:
                    type: string
                  internal_reasoning:
                    type: string
                  prompt:
                    type: string
                  web_search:
                    type: string
                required:
                  - prompt
                  - completion
                type: object
            required:
              - id
              - object
              - created
              - owned_by
            type: object
          type: array
        object:
          type: string
      required:
        - object
        - data
      type: object
    ErrorResponse:
      properties:
        error:
          properties:
            code:
              type: string
            details:
              description: Any value
            message:
              type: string
          required:
            - code
            - message
          type: object
        meta:
          type: object
      required:
        - error
      type: object
  securitySchemes:
    BearerAuth:
      bearerFormat: API Key
      description: API key authentication. Pass your API key as a Bearer token.
      scheme: bearer
      type: http

````