Anthropic launched Sonnet 5.5 six days after Opus 5.5 . The company says it scores 70.6% on Terminal-Bench 4.0, ahead of Opus 5.5’s 66.4% at xhigh effort. It also says Sonnet 5.5 generates output more than 30% faster than Sonnet 5 and uses fewer tokens per task. Sonnet costs $2 per million input tokens and $10 per million output tokens, half of Opus 5.5’s $4 and $20. Half the price per token doesn’t guarantee half the bill, though. If a model needs more tokens to finish the job, the savings shrink. Independent testing from Artificial Analysis found exactly that at max effort, with Sonnet 5.5...

Source: The New Stack