For AI agents: a documentation index is available at the root level at /llms.txt and /llms-full.txt. Append /llms.txt to any URL for a page-level index, or .md for the markdown version of any page.

Models Chat Rankings Docs

Docs API Reference Client SDKs Agent SDK Cookbook Changelog

Docs API Reference Client SDKs Agent SDK Cookbook Changelog

API Guides
API Reference

Models Chat Rankings Docs

API Reference Endpoints

List all endpoints for a model

GET

https://openrouter.ai/api/v1/models/:author/:slug/endpoints

GET

/api/v1/models/:author/:slug/endpoints

$ curl https://openrouter.ai/api/v1/models/openai/gpt-4/endpoints \
>      -H "Authorization: Bearer <token>"

1 {
2   "data": {
3     "architecture": {
4       "input_modalities": [
5         "text"
6       ],
7       "instruct_type": "chatml",
8       "modality": "text->text",
9       "output_modalities": [
10         "text"
11       ],
12       "tokenizer": "GPT"
13     },
14     "created": 1692901234,
15     "description": "GPT-4 is a large multimodal model.",
16     "endpoints": [],
17     "id": "openai/gpt-4",
18     "name": "GPT-4"
19   }
20 }

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Get request & usage metadata for a generation

Authentication

AuthorizationBearer

API key as bearer token in Authorization header

Path parameters

authorstringRequired

The author/organization of the model

slugstringRequired

The model slug

Response

Returns a list of endpoints

dataobject

List of available endpoints for a model

Errors

404

Not Found Error

500

Internal Server Error