UberLLM documentation

One API key for every model, routed to the cheapest healthy provider. UberLLM speaks both the OpenAI and Anthropic wire formats — point your existing client at it by changing one base URL.

• OpenAI-compatible: https://api.uberllm.dev/v1
• Anthropic-compatible: https://api.uberllm.dev (/v1/messages)

Get started

• Quickstart — key → base URL → first streaming call.
• Authentication — ull_ keys and how to send them.
• OpenAI SDK · Anthropic SDK
• Streaming — SSE on both surfaces.
• Models & routing — :floor / :nitro, the provider object, fallbacks.
• Pricing — no inference markup, 5% credit fee, BYOK.
• Errors — 402 / 404 / 429 / 502 codes.

Editor & framework integrations

• Editors: Cursor · Cline · Roo Code · Aider · Continue
• Frameworks: LangChain · Vercel AI SDK

Sell capacity

• Sellers — list an offer, pricing modes, health scoring, payouts.