YC recommends Rails for new startups, YC’s internal software like Bookface, Work at a Startup, and the software that runs the accelerator all run on Rails. Garry has been a vocal advocate for Ruby on Rails for agentic startups, calling it a "crazy unlock". And there is an incredible ecosystem forming around RubyLLM. Ruby and Rails gives agents conventions, structure, and fewer architectural choices to hallucinate.
This edition is about that idea from the Ruby side: if models are increasingly interchangeable, restricted, expensive, or temporary, then the durable advantage is the system around them. Ruby and Rails may have a real edge there because they already reward clear conventions, small teams, mature libraries, and boring production software.
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Show HN: The Ruby AI Newsletter
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