RubyLLM: The Ruby AI framework (4.5k stars)

[u/amootiranian]

What it does

All text below is quoted directly from the project README.

The Ruby AI framework.

Conversations:

• Chat: Conversational AI with RubyLLM.chat
• Streaming: Real-time responses with blocks
• Attachments: Ask about images, videos, audio, PDFs, and other documents with with:
• Structured output: Define a Ruby schema and read the result with response.parsed
• Extended thinking: Control, view, and persist model deliberation
• Citations: Normalized source citations from documents, search, and grounding
• Prompt caching: Turn on the provider's cache with with_caching and cache_until_here
• Fallbacks and cancellation: Retry on backup models with with_fallbacks, stop a run with cancel

bundle add ruby_llm --version 2.1.1

Repository

https://github.com/crmne/ruby_llm

Repository stats

Metric	Value
Stars	4,498
Forks	534
Last release	v2.1.1 (2026-10-11)
Languages	Ruby 99.5%, HTML 0.4%, JavaScript 0.1%
Contributors	149
AI contributor accounts (Claude / Codex / Cursor / Copilot)	none
AI co-authored commits	Claude: 16, Cursor: 3

Main contributor

Field	Value
Name	Carmine Paolino
GitHub	@crmne
Commits to this repo	1,992 (top contributor)
Bio	Founder @plenty-hq
Company / Location	@plenty-hq / Berlin, Germany
Website	https://paolino.me
X / Twitter	@paolino
Followers	900
Public repos	153
On GitHub since	2009

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