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Applied AI·September 28, 2026·1 min read

Anthropic releases Sonnet 5.5, saying it generates outputs 30%+ faster than Sonnet 5 and costs up to 30% less per task, and plans to release Haiku 5.5 soon

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A 30%+ speed and cost drop at the mid-tier — with Haiku 5.5 coming — reinforces that most day-to-day work will sit on aggressively optimized models, not flagships. If you’re still standardizing on a single top-end model, you’re likely overpaying for routine workloads that could move to Sonnet-class tiers.