How We Made claude.ai 3x Faster in Two Weeks

2026-09-24

Anthropic made the core Claude web and desktop experience about three times faster during a two-week sprint, cutting the 75th-percentile fresh-load time from 3.1 seconds to 0.55 seconds. The team used Claude to create deterministic benchmarks, pursue bottlenecks in parallel, and lock in gains with CI ratchets, feature flags, and staged rollouts.