LaunchAI ModelsOctober 8, 2026

Anthropic's Sonnet 5.5 beats Opus 5.5 on Terminal-Bench at 42% lower cost

Read original source →thenewstack.io

Sonnet 5.5 scores 70.6% on Terminal-Bench 4.0 versus Opus 5.5's 66.4% at xhigh effort, and Anthropic says it generates output over 30% faster than Sonnet 5 with fewer tokens per task. It launched six days after Opus 5.5 and costs $2 per million input tokens.

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