Anthropic Launches Claude Sonnet 5.5, 30% Faster and Up to 30% Cheaper Than Sonnet 5

Anthropic introduced Claude Sonnet 5.5, jumping from 10.3% to 70.6% on Terminal-Bench 4.0 and scoring just two points below Opus 5.5 on the GDPval-AA real-world occupational benchmark, while running over 30% faster and up to 30% cheaper per task at identical per-token pricing.