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.
Source: [Dev.to](https://dev.to/ahmed_nafies_3a55c907115c/im-using-gpt-sol-and-claude-opus-for-free-pi-coding-agent-omniroute-36m8)