RubyLLM
Ruby framework for working with LLMs, including chat, tools and agents, through one API.
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About RubyLLM
RubyLLM is listed in our frameworks category and is aimed at builders. Ruby framework for working with LLMs, including chat, tools and agents, through one API. Pricing, as the maker states it: Open source. Maturity: Active. We last checked the official link on 2026-10-16.
What is RubyLLM?
RubyLLM is a Ruby framework for building AI features the Ruby way, with models, tools, agents, sandboxed code, evaluations and Rails conventions under one consistent API.
You can move between hosted and local providers without rewriting your application, or connect an OpenAI-compatible endpoint.
Sources: the official README and our directory listing, checked 2026-10-18. Official site: rubyllm.com.
Who is RubyLLM for?
Ruby and Rails developers adding chat, tools and agents to their apps.
RubyLLM at a glance
- Open source: Yes (MIT License)
- GitHub: crmne/ruby_llm · 4,478 stars (as of Oct 21, 2026)
Key features
- One API for chat, tools and agents
- Rails conventions
- Hosted, local or OpenAI-compatible providers
- Evaluations and sandboxed code
RubyLLM FAQ
What is RubyLLM?
RubyLLM is a Ruby framework for building AI features the Ruby way, with models, tools, agents, sandboxed code, evaluations and Rails conventions under one consistent API.
Who is RubyLLM for?
Ruby and Rails developers adding chat, tools and agents to their apps.
Is RubyLLM free?
RubyLLM's pricing, as the maker states it: Open source. Open-source tools are free to use, though you may still pay for model API usage or a hosted plan. Check the official site for current plans.
Is RubyLLM open source?
Yes. RubyLLM is released under the MIT License, according to its GitHub repository.
What are alternatives to RubyLLM?
Similar tools include CrewAI, LangGraph, LlamaIndex, Neuron AI, AstrBot and kagent.
RubyLLM ratings and reviews
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RubyLLM alternatives
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LlamaIndex
Framework for agents over your data (RAG, document agents).
Neuron AI
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AstrBot
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kagent
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