
eliza
Open source agentic operating system
The Lens
elizaOS is a framework for building AI agents that actually do things: answer in your Discord, run a Telegram bot, automate a workflow, or play an NPC in a game. It ships with the parts you'd otherwise wire up yourself, including memory, document ingestion so the agent can read your docs, and connectors for the major chat platforms. MIT licensed, free, and it works with whatever model you want behind it: OpenAI, Anthropic, Gemini, Llama, or Grok.
Running it is real work. You need Node 24 and Bun, you bring your own model API key, and you host it yourself. Scaffolding a starter agent takes minutes, but turning that into something reliable in production is a project, not an afternoon.
Solo builders and small teams: this is a strong start if you want control over your agent stack instead of renting someone's hosted bot platform. Larger teams get the same code with no license ceiling. Compare it against LangChain if you want a library rather than a full runtime.
The catch: it moves fast and the surface is wide, so expect breaking changes and rough edges as you go deeper. The framework is free, but your real cost is the LLM tokens every agent burns through, and those add up quietly.
Free vs Self-Hosted vs Paid
fully freeFree tier: The entire framework is free under the MIT license. Multi-agent runtime, RAG document ingestion, connectors for Discord, Telegram, and Farcaster, plus a web dashboard. No paid edition, no gated features.
Self-hosted: This is the only way to run it. You bring your own LLM key (OpenAI, Anthropic, Gemini, Llama, or Grok) and your own infrastructure. Needs Node 24+ and Bun. Deploy locally or push to Vercel, Cloudflare, AWS, or GCP at those providers' normal rates.
Paid: None from elizaOS itself. Your costs are LLM API tokens and whatever hosting you pick.
The framework is free. Your bill is LLM tokens and hosting, nothing more.
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License: MIT License
Use freely, including commercial. Just keep the license.
Commercial use: ✓ Yes
About
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