Claude Sonnet 5.5 costs half as much as Opus 5.5.
Same challenge: a storm in 3D. Opus: 39 min, ~$7, works first time. Sonnet: 25 min, ~$4… but error, because of a single line of code. Corrected.
Anthropic just shipped Sonnet 5.5 and already published a guide on getting the most out of it.
On Terminal-Bench this model hit 70.6%, up from 10.3% for Sonnet 5 and ahead of Opus 5.5 at 66.4%, which is priced at double, $4/$20 per million against $2/$10. It also runs 30%+
Anthropic's models ran 56 agents for $38.40 a day in a 5,000-PERSON sim and cut all 14 bosses out by day 154
14 department heads cost the company $4,270 a day, and 1 analyst ran their work for $38.40 he never got a new title task → agent → his desk → sign-off → back to
Opus 5.5 spent 1 hour 26 minutes on one prompt and built this lens lab.
At API prices the run comes to $25.66 Ryan Sael asked it to explain camera focus. What came back is an interactive lab in three.js: turn the focus ring and the glass elements move the sharp plane through the
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