Anthropic launches Claude Sonnet 4.5 with longer coding sessions and enhanced safety

Anthropic launches Claude Sonnet 4.5 with longer coding sessions and enhanced safety


According to Anthropic, Claude Sonnet 4.5 can maintain autonomous coding sessions for up to 30 hours – a substantial increase over the company’s previous Claude Opus 4 model, which supported roughly seven uninterrupted hours. The firm claims that Sonnet 4.5 is stronger “in almost every way” compared with earlier versions,…

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