The Repo That Kills Your API Bills
The repo: github.com/open-free-llm-api/awesome-freellm-apis
The config generator: freellm.net/config — pick your tool, pick a free model, copy the exact config snippet. This is the part that actually saves you the hour.
134+ free APIs from 40+ providers — Gemini, Grok, NVIDIA, and dozens more — all on permanent free tiers, not trials.
The part most people miss: you're not supposed to set this up yourself.
How It Actually Works (2 Steps, Not 1)
Step 1 — You get the key (60 seconds, human only). Sign up at the provider and copy your API key. An agent can't do this part — it can't pass signup or phone verification. Most providers need no credit card at all: Google AI Studio, OpenRouter, Groq, GitHub Models, Cerebras. NVIDIA NIM and Mistral do ask for a phone number.
Step 2 — Your agent does the wiring (this is the delegated part). Paste your key plus the config snippet into Cursor, Claude Code, or Codex and command:
"Here's my API key and base URL. Wire this up as my default endpoint, set the env vars in the right shell profile, and confirm it's live with a test call."
That's the real trick. These tools all read custom endpoints from environment variables — ANTHROPIC_BASE_URL for Claude Code, OPENAI_BASE_URL for Codex, a base URL override in Cursor's Settings → Models. Swap the endpoint, keep the tool, pay nothing.
Editing shell profiles by hand isn't setup — it's a task you forgot to delegate.
5 Creative Ways to Use These Free APIs
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🧠 Always-On Research Assistant Command your agent to run free-tier Gemini or NVIDIA against your docs 24/7 — no query rationing.
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🚀 Zero-Cost Prototyping Tell your agent to scaffold and test any idea in Cursor. If it flops, you lost time — not money.
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⚡ Multi-Model Coding Stack Command your agent to swap configs: fast model for autocomplete, sharp model for architecture. Same editor, one instruction.
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🔁 Stress-Test at Scale Tell your agent to run the same prompt hundreds of times and log what breaks. Free means you can actually afford to find the edge cases.
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🎯 Compare Models Side-by-Side Have your agent run the same task against Gemini, Grok, and Nemotron — see who's actually best at what, for free.
🌊 This repo is your 90%. Handing setup to an agent instead of doing it yourself — that's the whole method. 90% AI, 10% human. We teach people to become Agent Commanders inside The AI Surfer OS, the agentic system we run our entire company on. Secure your free seat →
4 Rules So This Doesn't Break
- Match model to task. Light models for autocomplete, your best free tier for real reasoning. The live model list sorts by score, context window, and rate limit — use that instead of guessing.
- Check the rate limit before you commit. "Free" varies wildly — some tiers are 15 requests/min, others 200/day. The limit, not the model, is what breaks your workflow.
- Set up 2–3 providers now. Then hitting a limit is a config swap, not an emergency.
- Re-check limits monthly. Free tiers change terms faster than paid ones.
- Keys in config files, never hardcoded. One leaked key undoes the whole point of going free.
Start Here
Pick one provider. Hand your agent the repo link and let it do the rest. You don't need 134 APIs on day one.
The real question isn't which free API should I use — it's why am I still the one setting it up.