OpenPaths is an open source model router and AI gateway. One API key and one base URL (https://openpaths.io/v1) reach language, image, video, speech, music, embedding and 3D models from many providers.

Is OpenPaths compatible with the OpenAI and Anthropic SDKs?

Yes. POST /v1/chat/completions follows the OpenAI schema and POST /v1/messages follows the Anthropic schema. Change the base URL and keep your existing code.

How does OpenPaths pricing work?

Pay as you go at the provider price with near-zero markup. Requests on your own provider keys (BYOK) are recorded at $0. See https://openpaths.io/pricing.

What does openpaths/auto do?

openpaths/auto routes each request to a suitable model automatically, with automatic fallbacks when a provider fails or rate-limits.

Is there an OpenAPI spec or MCP server?

Yes. The OpenAPI 3.1 spec is at https://openpaths.io/openapi.json, the MCP endpoint is https://openpaths.io/mcp, and llms.txt plus llms-full.txt list every model id.

OpenAI-Compatible Embeddings API

A drop-in /v1/embeddings endpoint for semantic search, RAG and clustering, including a low-cost CPU-served OpenPaths embedding model.

Embeddings models and pricing

Model	Provider	Context	Price
OpenPaths Embed `openpaths-embed`	OpenPaths	256	$0.001 / 1M tokens
ModernBERT Embedding `text-embedding`	Text-Generator.io	8K	$0.10 / 1M tokens
Gemini Embedding 001 `gemini-embedding-001`	Google	2K	$0.15 / 1M tokens
Gemini Embedding 2 Preview `gemini-embedding-2-preview`	Google	8K	$0.20 / 1M tokens

FAQ

Is it compatible with the OpenAI SDK?

Yes. Set base_url to https://openpaths.io/v1 and use your OpenPaths API key; request and response shapes follow the OpenAI API.

Can I batch inputs?

Yes. input accepts a string or an array of strings.

How is it priced?

Prepaid, pay-as-you-go credits at close to provider list price with no subscription. The tables on this page are generated from the live OpenPaths model catalog.

Chat Completions Web Search Free LLM API