CodebuffAI/freebuff
An open-source coding agent that gives free access to multiple AI models, paid for by text ads instead of subscriptions
Freebuff is a free suite of AI coding tools available as a terminal CLI, desktop app, web builder, GitHub-connected cloud service, and chat product, all without a subscription or API key. It lets users pick from several models like GPT-5.6 Luna, DeepSeek V4, and MiniMax M3, funded through text ads rather than fees. It's built on Codebuff, an open multi-agent framework, and developed as a TypeScript monorepo using Bun.
What it does
- Instead of routing every task through one model and one prompt, Freebuff uses specialized agents that each handle context-gathering, planning, editing, tool use, or review.
- Users install it with 'npm install -g freebuff', then run it inside any project folder, where it finds relevant files, makes edits, and runs the checks relevant to that project.
- The default model picker includes GPT-5.6 Luna, DeepSeek V4 Flash and Pro, MiniMax M3, and MiMo 2.5, while GLM 5.2 requires earned sessions and Gemini 3.1 Flash Lite is reserved for specialist tasks like file finding.
- Users in supported regions get full access to all models, while other regions or VPN users get limited access, currently three one-hour MiMo 2.5 sessions per day, extendable up to seven.
- User data such as prompts and code is only used to train AI models when explicitly disclosed for a given feature; otherwise it's used to run the service and personalize ads.
Why it matters
It lets developers try several current coding AI models directly in real projects without paying for API access or subscriptions, making it easier to evaluate different models before committing. Because it's ad-supported, users should also weigh the usage caps and data-use terms that come with the free tiers.
Terms in this repo
- coding agent · an AI program that autonomously interprets development tasks and performs actions like editing code or running commands
- monorepo · a single repository that holds multiple related projects or packages together
- Q8_0 quantization · a technique that reduces a model's numerical precision to shrink its size and lower running costs
- SDK · a set of development tools that lets other applications embed a given feature easily
Repository description (English)
The free coding agent
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