I'm using GPT Sol and Claude Opus for free. No credit card, no per-token bill, no "you've hit your monthly limit" email.

Two pieces of software make it happen:

Pi — the coding agent that reads, writes, and runs commands in my terminal.

OmniRoute — a local gateway that sits in front of hundreds of AI providers, dozens of them free, and routes every request to the cheapest one that works.

Here's the exact setup, from install to first prompt.