Claude Sonnet 5.5
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Anthropic released Claude Sonnet 5.5 on September 28, 2026, featuring 30% faster execution and up to 30% lower costs while matching Sonnet 5 pricing. The model powers the free tier on claude.ai, though it experienced a 128,000-token thinking bug costing $1.28. Haiku 5.5 is scheduled for release in the coming weeks.
Continue in the app — vote & join in ➔Source: Simon Willison (AI) · via ahirlevel.hu