LLMBase API Reference

OpenAI-compatible REST API at api.llmbase.ai. Any OpenAI SDK works — just swap the base URL and API key.

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LLMBase exposes an OpenAI-compatible REST API. Migrate from OpenAI by changing one line — the baseURL. Authentication, request format, and response shape are identical.

Docs

Quickstart

Make your first LLMBase API call in under two minutes.

Authentication

How to authenticate requests to the LLMBase API using Bearer tokens.

API Reference

Inference

Models

Available models and how to list them via the API.

Chat completions

Full reference for POST /v1/chat/completions — the core inference endpoint.

Integrations

Using via OpenRouter

Access LLMBase models through OpenRouter's unified API gateway.