Rails World 2026 Opening Keynote video
The gist
DHH opened Rails World 2026 in Austin, declaring 37signals "pencils down" on hand-written code.
The keynote argues agents make native rewrites cheap and Rails conventions a fit for AI-written code.
How it unfolded
- Nov 24, 2025DHH dates the inflection point of the age of agents to this date, when frontier AI became accessible to everyone — "the Kodak Brownie of our era."
- Aug 2026DHH writes 150,000 lines of code in a single month, versus his long-term average of about 30,000 lines of production Ruby a year.
- Sep 23, 2026DHH opens Rails World 2026 in Austin with a keynote on the age of AI agents.