How we made claude.ai 3x faster in two weeks

Claude, the AI model, was able to make claude.ai 3x faster in just two weeks. After users complained about the platform's slow performance, the team focused on four journeys that make up 95% of user activity. They measured time to a typeable page on a fresh load of claude.ai, starting a new Claude Code session, loading a Claude Cowork cloud session, and found various bottlenecks.

Claude used its capabilities to build benchmarks, ship improvements, and monitor every deploy. The team set goals, made tradeoffs, and approved every change, resulting in over three thousand changes merged without any customer-facing incidents or rollbacks. The process involved setting targets, implementing projects, and continuously measuring performance in the lab using various benchmarks. This loop allowed the team to make claude.ai faster efficiently and safely.