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RubyLLM

by RubyLLMNo ratings yet

Build model-powered applications and agents in Ruby

Visit rubyllm.com
Tool type
Ruby AI application framework
Made for
Ruby and Rails developers
Runs on
Ruby or Rails applications
Last checked
30 Oct 2026
2 product sources

What it does

RubyLLM is a Ruby framework for working with language models, tools and agents through a consistent API. It supports plain Ruby and Rails applications, with chat history, streaming, file attachments, tool calls and structured outputs. Developers can use hosted or local providers and connect compatible model endpoints.

Ruby classes define tools and MCP connections, letting applications control what a model can call. The framework is useful for Ruby teams adding AI features without maintaining a different client integration for every provider. The MIT software is free; model-provider usage and infrastructure are separate, and individual model capabilities still differ.

What it can do

  • Multi-provider chat
  • Streaming responses
  • File attachments
  • Ruby-defined tools
  • MCP connections
  • Structured output
  • Rails integration

Works with

  • Ruby on Rails
  • Ollama

Before you choose

  • Provider and model capabilities vary despite the common API.
  • Remote model calls have their own pricing and data handling.

Listed under

Get started

  1. Install the gem and configure a supported model provider.
  2. Create a chat or agent and define any permitted tools.
  3. Test responses and structured outputs in the application.
Install and configure RubyLLM

Plans and prices

MIT-licensed framework; model providers and infrastructure may charge separately.

We couldn’t find published prices for RubyLLM. See their pricing page ↗

Sources for this overview

Product pages, documentation, and pricing checked 30 Oct 2026. Each source supports part of the overview; availability and prices can change.

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What’s changed

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Signals

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Data and security

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Training on your files, compliance, hosting and the models behind it. Free with an account.

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Where this comes from

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Last checked 30 Oct 2026. Every field keeps its source and date; unknown means we couldn’t confirm it.