Freebuff: a 100% free coding agent, '$0 forever' - with frontier LLMs included

Ad-supported AI developer tooling is evolving fast. After Kickbacks.ai (injects ads into Claude Code, splits revenue, gives you cash back on a subscription), now we have freebuff.com - which takes the model in a completely different direction.

Instead of cash back on a paid plan, Freebuff is a standalone autonomous terminal agent where both the agent harness and the frontier LLM compute are 100% free forever ($0).

Models included, free

• GLM 5.3 Flash - the primary coding agent.
• Kimi k3 - deep reasoning and long-context logic.
• DeepSeek V4 Flash - high-speed tool execution and multi-hour free coding sessions.

How it stays free

Non-intrusive text sponsor links in the CLI subsidize the backend API compute. The agent edits local files, runs shell commands, and handles tool execution - while the ad revenue just covering whatever model calls it makes.

Key takeaways:

• Terminal and desktop agent in one.
• Top models included at $0.
• No subscription, no API key setup.
• Ad-funded backend compute keeps it free.

Bottom line

If you are looking for a coding agent without monthly subscription overhead, it is worth a spin. It is a competing philosophy to Kickbacks - instead of getting money back on a bill, there is no bill.

Install: npm install -g freebuff