Agents on Rails: the first benchmark report
Summary
The article reports on Agents on Rails, the first benchmark comparing eight LLMs across 21 Rails-specific tasks. It highlights that accuracy, cost, and speed vary widely by model, with Claude Opus 5 leading in accuracy, GPT-5.6 Luna being the cheapest, and Luna fastest, while Fable struggles on a security-like task. The findings stress the importance of API recall versus hand-rolled solutions and suggest practice implications for Rails-based automation.