LowRouter

LowRouter Documentation

LowRouter is an HTTP gateway for large language models. It speaks the OpenAI API on the front, fans out to multiple providers on the back, and attaches energy and carbon estimates to every response. You get one endpoint, one credit balance, one usage history — and a number for the footprint of every call.

These docs are written for developers and operators. Every page is plain markdown — append .md to any URL or use the Copy page button to grab the raw source.

What’s available today

LowRouter is in an invite-only beta, run as an early-stage, experimental service without an SLA. What that means concretely:

  • Text inference is live — chat and text completions through the OpenAI-compatible API, across the providers in the model catalog.
  • Image input, image and video generation, and MCP are not available yet. They’re on the roadmap; we list them as “coming soon” rather than pretending they work.
  • Signup requires an invite link. No invite, no account — for now.

We’d rather under-promise here: if a capability isn’t on the “live” list above, the API doesn’t support it today.

Where to start

If you have ten minutes:

  1. Create an account
  2. Create your first API key
  3. Run your first completion

If you want to understand the project before you sign up, the Philosophy section explains what LowRouter is, what it isn’t, and why we built it.

What’s in this site

  • Philosophy — the principles, the position, and what we explicitly do not claim.
  • Getting started — account setup, keys, first request, dashboard tour.
  • Guides — day-to-day operations: keys, credits, billing, usage, and reading the dashboard.
  • Integrations — copy-paste snippets for the OpenAI SDK, Anthropic SDK, and common LLM tools.
  • API reference — endpoints, parameters, streaming, error codes, rate limits.
  • Models & providers — what’s routable, how routing works, and how to read per-request metadata.
  • Sustainable AI — how we estimate energy and carbon, what data we use, and what the numbers mean.
  • FAQ — short answers to the questions we get most often.

API at a glance

Bash
curl https://lowrouter.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $LOWROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "lowrouter/auto",
    "messages": [{"role": "user", "content": "Hello"}]
  }'

The response carries the usual OpenAI-shaped JSON plus an eco block with the energy and carbon estimate for the request. See per-request metadata for the schema.

Source and licence

The platform is operated by Carbonifer SAS. Source for these docs lives in the docs-public/ directory of the LowRouter repository. Page content is published under the same terms as the rest of the site — see the legal pages linked in the footer.