Anthropic Sonnet 5: It closes the gap with Opus 4.8, and is cheap until August

Anthropic launched Sonnet 5, the newest model in its Sonnet series. Sonnet 5 narrows the performance gap with Opus 4.8. The model is offered at a discounted price until August.

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PublishedTuesday, June 30, 2026 at 8:00 PMJun 30, 08:00 PM

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Story ID#4722

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Anthropic's Claude Sonnet 5 nears Opus 4.8 on agentic benchmarks and ships with introductory API pricing at $2/$10 per million tokens through August.

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Anthropic Sonnet 5: It closes the gap with Opus 4.8, and is cheap until August

Original article excerpt