Best Open-Source AI Agents
Last reviewed
TL;DR
The best open-source AI agents are n8n for workflow automation, OpenHands for autonomous coding, and Flowise for building RAG agents — all free to self-host with any model.
These are the best genuinely free, open-source AI agents — software you can read, run, and self-host with no per-seat fees. They span workflow building, autonomous coding, and research, and all let you bring your own model.
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Why it's here: Best overall: a free, self-hosted automation backbone with AI Agent nodes.
Builders who want a self-hosted, model-agnostic foundation for AI agents without per-seat SaaS fees.
Why it's here: Best coding agent: autonomous software engineering you run locally.
Developers who want an autonomous coding agent they can run locally against private repositories.
Why it's here: Best agent builder: drag-and-drop RAG and agent flows, free to self-host.
Teams who want to prototype RAG chatbots and agents visually without writing orchestration code.
Why it's here: Best for production: an all-in-one platform for agents and RAG apps.
Teams that want an all-in-one platform to ship agents and RAG apps to production.
Why it's here: Best for power users: a fully transparent, hackable autonomous agent.
Power users who want a fully transparent, hackable autonomous agent they run locally.
How we picked
- ✓Truly open-source license
- ✓Free to self-host
- ✓Bring your own model
- ✓Active maintenance
Frequently asked questions
Are open-source AI agents really free?
Yes. The software is free to run; your only costs are the server you host it on (often a few dollars a month) and any model API usage. There are no per-seat SaaS fees.