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AI IntelligenceSep 29, 2026AI Intelligence
Article

Anthropic launches Claude Sonnet 5.5 with 30% lower costs per task

Anthropic has launched Claude Sonnet 5.5, which generates output over 30 percent faster and costs up to 30 percent less per task than its predecessor. The model nearly matches Opus 5.5 on knowledge-work benchmarks and improved its score on the Terminal-Bench coding benchmark from 10.3 to 70.6 percent.

Frontier EditorialSource: The Decoder
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Anthropic launches Claude Sonnet 5.5 with 30% lower costs per task: Anthropic has launched Claude Sonnet 5.5, which generates output over 30 percent faster and costs up to 30 percent less per task than its predecessor. The model nearly matches Opus 5.5 on knowledge-work benchmarks and improved its score on the Terminal-Bench coding benchmark from 10.3 to 70.6 percent.

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