freellmpool

Pool the free tiers of 16 LLM providers (200+ live-validated models) behind one OpenAI-compatible endpoint — as a CLI, a Python library, or a local proxy. Works with no API keys.

Groq, Cerebras, NVIDIA NIM, Google Gemini, OpenRouter, GitHub Models, Cloudflare, Mistral, Cohere and others each give away a free tier — but each has its own SDK, rate limits, and daily cap. freellmpool puts them in one pool: it sends each request to a provider you have access to, fails over to the next when one is rate limited or down, and tracks per-day usage so you get the most out of every tier.

Two providers (Pollinations and OVHcloud) need no API key, so a fresh install answers immediately:

$ pip install freellmpool
$ freellmpool ask "Explain the CAP theorem in one sentence."
A distributed system can guarantee at most two of consistency, availability, and
partition tolerance at the same time.

Add keys for the other providers to unlock more models and higher limits.

Run a coding agent on free models

freellmpool's proxy speaks both the OpenAI and the Anthropic API, so coding agents run against pooled free tiers with no code changes — just point them at the proxy:

freellmpool proxy                       # starts http://localhost:8080
freellmpool code claude                 # prints the one-line setup for Claude Code
# (also: codex, aider, cline, continue, cursor, opencode)

Your existing OpenAI/Anthropic apps work the same way — set OPENAI_BASE_URL (or ANTHROPIC_BASE_URL) to the proxy and keep your code unchanged.

New in 0.10: an async API (AsyncPool), an MCP server (freellmpool mcp), latency-aware routing with freellmpool benchmark, observability hooks, and a plugin system for custom providers. See the changelog.

Install

pip install freellmpool      # or: pipx install freellmpool

Only dependency is httpx. Python 3.11+.

Command line

freellmpool ask "Write a haiku about sqlite"
git diff | freellmpool ask "Write a commit message for this"
freellmpool providers        # which providers are configured
freellmpool models           # every provider/model id

Pin a provider or model; common OpenAI/Anthropic model names are mapped to a free equivalent so existing scripts keep working:

freellmpool ask -m groq/llama-3.3-70b-versatile "hi"
freellmpool ask -p cerebras,groq "hi"
freellmpool ask -m gpt-4o-mini "hi"      # routed to a free model

As a proxy

Run a local server that speaks the OpenAI API, then point any OpenAI-compatible tool at it:

freellmpool proxy
export OPENAI_BASE_URL=http://localhost:8080/v1
export OPENAI_API_KEY=unused

from openai import OpenAI
client = OpenAI()
print(client.chat.completions.create(
    model="auto",
    messages=[{"role": "user", "content": "hi"}],
).choices[0].message.content)

The proxy also implements the OpenAI Responses API (for the Codex CLI) and the Anthropic Messages API (for Claude Code), so coding agents can run on free models too. freellmpool code <agent> prints the exact setup:

freellmpool code aider       # also: claude, codex, cline, continue, cursor, opencode

Endpoints: /v1/chat/completions (token streaming, tool calling), /v1/embeddings, /v1/responses, /v1/messages, /v1/models, and a /dashboard page showing usage. Setup snippets for specific tools are in docs/INTEGRATIONS.md and docs/AGENTS.md.

As a library

from freellmpool import Pool

pool = Pool.from_default_config()
reply = pool.ask("Summarize the plot of Hamlet in 20 words.")
print(reply.text, "—", reply.provider_id)

vectors = pool.embed(["first document", "second document"]).vectors

Async is the same API with await:

from freellmpool import AsyncPool

async with AsyncPool.from_default_config() as pool:
    reply = await pool.aask("Summarize the plot of Hamlet in 20 words.")

Pass on_event=... to either pool to receive structured routing events (attempt/success/error/cooldown/exhausted) for logging or tracing. Add your own endpoint with register_provider(...), or a new request shape with register_adapter(name, fn).

Benchmark your providers

freellmpool benchmark times one call per configured provider and prints latency and success, so you can see which of your free tiers are fastest right now. The router learns the same latency/success signal from real traffic as it runs; set FREELLMPOOL_ROUTING=fast to prefer the lowest-latency provider instead of the default least-used-first.

$ freellmpool benchmark
  provider/model            status   latency  note
  cerebras/llama-3.3-70b    ok        180 ms  6 tok
  groq/llama-3.3-70b        ok        240 ms  6 tok
  ovh/Meta-Llama-3_3-70B    FAIL           -  HTTP 429

As an MCP server

freellmpool mcp runs a Model Context Protocol server over stdio, so Claude Desktop, Claude Code, or Cursor can hand subtasks to free models. See docs/MCP.md. A server.json is included for the MCP registry.

In Simon Willison's llm CLI

There's a plugin: llm install llm-freellmpool → llm -m freellmpool "..." with no API key. Source: 0xzr/llm-freellmpool.

Provider keys

freellmpool reads keys from the environment and uses whatever is set. None are required. Step-by-step signup links for each (all free, no card) are in docs/ACCOUNTS.md.

Provider	Env var	Notes
Pollinations	—	no key needed
OVHcloud	—	no key needed (anonymous tier)
LLM7	LLM7_API_KEY	optional
Groq	GROQ_API_KEY	fast
Cerebras	CEREBRAS_API_KEY	fast, large daily cap
NVIDIA NIM	NVIDIA_API_KEY
OpenRouter	OPENROUTER_API_KEY	free models
Google Gemini	GEMINI_API_KEY
GitHub Models	GITHUB_TOKEN	any PAT
Cloudflare	CLOUDFLARE_API_TOKEN + CLOUDFLARE_ACCOUNT_ID
Mistral, Cohere, SambaNova, Z.ai, Ollama Cloud, LongCat	see .env.example

A config.toml (see config.toml.example) can hold keys, model aliases, and settings instead of env vars.

How routing works

For each request, freellmpool builds the list of (provider, model) pairs you have access to, orders them least-used-first (so load spreads across tiers), and tries them in order until one returns a non-empty result. A provider that returns a 429 is set aside for a cooldown window. Daily counts are kept in ~/.config/freellmpool/quota.json and reset at UTC midnight.

Every call records latency and success per provider. A provider that is currently failing sinks to the back automatically; with FREELLMPOOL_ROUTING=fast the fastest measured provider goes first instead. freellmpool benchmark warms these metrics on demand.

Architecture notes: docs/ARCHITECTURE.md.

Limitations

• Free-tier models are smaller than frontier models. They're good for drafting, summarizing, classification, triage, and everyday coding — not a replacement for GPT-class reasoning on hard problems.
• Quality and capacity vary through the day as high-cap tiers exhaust; limits reset at UTC midnight.
• Free tiers change without notice. When a model id or limit goes stale, a one-line PR to providers.toml fixes it for everyone.
• The proxy is meant for local/single-user use. It binds to 127.0.0.1 by default; if you expose it, set a key (--api-key).
• The Claude Code / Anthropic path is experimental (text and tool use; no vision).
• These are free tiers shared by everyone — don't abuse them.

How it compares

Tool	What it is	Install	Keyless start	CLI / library / proxy / MCP
freellmpool	Pools many providers' free tiers	pip install	Yes (2 providers)	All four
OpenRouter	Hosted paid aggregator (some free models)	API key	No	API only
LiteLLM	Multi-provider SDK/proxy (bring your own keys)	pip install	No	Library + proxy
Self-hosted free-API servers	A server you deploy	Docker + config	No	Server only

freellmpool's niche is the keyless, pip-installable client for squeezing the hosted free tiers — not a server you deploy, and not a paid aggregator.

FAQ

Is there a free, OpenAI-compatible LLM API gateway? Yes — freellmpool is a free, MIT-licensed gateway that exposes one OpenAI-compatible endpoint backed by the free tiers of 16 providers. pip install freellmpool and point any OpenAI client at the local proxy.

How do I use multiple free LLM APIs at once? freellmpool pools them: each request goes to a provider you have access to, fails over to the next when one is rate-limited or down, and tracks per-day usage so load spreads across tiers.

Can I run Claude Code or Codex on free models? Yes — the proxy speaks both the OpenAI and Anthropic APIs. Set OPENAI_BASE_URL or ANTHROPIC_BASE_URL to the proxy and run Codex, Claude Code, aider, Cline, Continue, or Cursor unchanged. See freellmpool code <agent>. (Claude Code path is experimental: text + tools, no vision.)

Do I need an API key? No — Pollinations and OVHcloud work with no key, so a fresh install answers immediately. Add free keys for the other providers for more models and higher limits.

Is it free and open source? Yes, MIT-licensed. More at the project page.

Contributing

New providers and fixes to stale limits are the most useful contributions, and both are usually a small change to providers.toml. See CONTRIBUTING.md. Tests run with no network access:

pip install -e ".[dev]" && pytest && ruff check src tests

License

MIT