API overview

OpenAI-compatible clients use this base URL:

https://omrouter.com/v1

Anthropic SDKs and some direct HTTP requests use the service address:

https://omrouter.com

Text endpoints

Method	Path	Purpose
GET	/v1/models	List models
POST	/v1/chat/completions	OpenAI Chat Completions
POST	/v1/responses	OpenAI Responses
POST	/v1/responses/compact	Compact Responses
POST	/v1/messages	Anthropic Messages
POST	/v1beta/models/{model}:generateContent	Gemini generateContent

Image, audio, and other endpoints

Method	Path	Purpose
POST	/v1/images/generations	Generate images
POST	/v1/images/edits	Edit images
POST	/v1/audio/transcriptions	Transcribe audio
POST	/v1/audio/translations	Translate audio
POST	/v1/audio/speech	Text to speech
POST	/v1/embeddings	Generate embeddings
POST	/v1/rerank	Rerank documents
POST	/v1/video/generations	Create a video task
GET	/v1/video/generations/{task_id}	Check a video task

Authentication

OpenAI-compatible, image, audio, and other endpoints use:

Authorization: Bearer OMROUTER_API_KEY

Anthropic uses x-api-key, and Gemini uses x-goog-api-key. See API keys and authentication for complete examples.

Request content type

JSON requests require:

Content-Type: application/json

Audio and image uploads use multipart/form-data. SDKs and cURL’s --form option set the correct header automatically.