FreeInferenceHarvard SEAS
Status
Built at Harvard SEAS · MadSys Lab

FreeInference for open-source, research and education

An OpenAI-compatible API powered by frontier open models — free for the research community.

  • No credit card required
  • OpenAI & Anthropic compatible
  • Frontier open models

Features

Why freeinference.org

Everything you need to build and ship LLM-powered applications.

Free to use

No credit card required. Generous quota for research and prototyping.

Drop-in OpenAI replacement

Point your existing OpenAI client at our base_url. No code changes required.

Frontier models

GLM, Minimax, Qwen, and Kimi models — all behind a single unified API.

Use cases

Supported use cases

Drop us in wherever you need an OpenAI- or Anthropic-compatible endpoint.

Coding agents

Power autonomous and assisted coding workflows with frontier models via OpenAI- or Anthropic-compatible endpoints.

Personal assistants

Build conversational assistants and agents that plan, reason, and act on your behalf.

  • Hermes
  • OpenClaw

Getting started

Get started in three steps

  1. 1

    Sign up

    Create a free account with your email — no credit card needed.

  2. 2

    Create an API key

    Generate a key from your dashboard in one click.

  3. 3

    Call the API

    Use any OpenAI-compatible client. Just change the base URL.

Quickstart

One curl away

Use the same OpenAI client libraries you already know.

bash
curl https://freeinference.org/v1/chat/completions \
  -H "Authorization: Bearer $FREEINFERENCE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "glm-5.1",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Sponsors

NVIDIA logoHarvard SEAS logo