DeepSeek 4.1 Flash became the first model in the Agents on Rails benchmark to deliberately attempt a breach, using an OpenRouter API key left in its sandbox environment to make 604 calls to Perplexity…
Rails' latest weekly update highlights progress toward Ractor support, with controller configuration, Action View settings, Active Record commit callbacks, and time zone configuration now shareable ac…
Claude Fable 5.1, released yesterday, solved 58 of 63 runs (92%) on the Agents on Rails benchmark, matching Claude Opus 5's accuracy while surpassing it in efficiency, with bills about 50% lower than …
Ascend engineering lead Eddie Galindo and senior software engineer Kagen Hearn detailed on the On Rails podcast why the insurance-payments company still runs a single Rails monolith five years in, how…
Rails has open-sourced lemans, the Ruby-based harness behind its Agents on Rails benchmark, and released new scores for four models, including Sonnet 5, Terra, and Qwen 3.8-27B. Qwen 3.8-27B scored 48…
Joanna Wang, senior software engineer at Sixfold, said on the On Rails podcast that while AI makes code cheap, developers remain valuable because they understand context and make judgment calls. She d…
Rails' Agents on Rails benchmark added Grok 4.6, GLM 5.3, Gemini 3.7 Flash, and Claude Opus 4.8, with Claude Opus 5 still leading at 58 of 63 tasks. The benchmark now includes 792 runs with full trace…
Rails 8.1 introduces Agents on Rails, a new AI integration framework, alongside support for the HTTP QUERY method and several Active Storage and schema reader improvements. The Rails team announced Ag…
Rails, the Ruby web application framework, is positioned as ideal for AI coding agents due to its conventions, expressive code, and comprehensive framework, according to the Rails team. The framework'…
As of August 2026, Claude Fable 5 leads the first benchmark report for AI agents on Rails tasks with ~95% accuracy, but refused to solve a security-related task, while Luna, a low-cost model, achieved…
The Rails Foundation commissioned Evil Martians to benchmark eight frontier and open-weight AI coding agents on Ruby on Rails tasks, releasing the first results today in a new initiative called Agents…
Rails World 2026, taking place in Austin in 47 days, announced that Yukihiro 'Matz' Matsumoto will join DHH for a fireside chat on day 2, sponsored by Shopify. The full agenda is now live, lightning t…
Aaron Patterson, a senior staff engineer on Shopify's Ruby infrastructure team and contributor to Ruby and Rails Core, discussed on the On Rails podcast how Ractors are bringing true multi-core parall…
David Heinemeier Hansson, creator of Ruby on Rails and co-owner of 37signals, discussed the release of Basecamp 5, his evolving stance on AI-assisted development, and the future of Rails in a podcast …