Last Week in AI #323 - Sonnet 4.5, Sora 2, Vibes, SB 53

Anthropic releases Claude Sonnet 4.5

Anthropic announced Claude Sonnet 4.5, highlighting a major leap in autonomous “computer use” and coding capabilities. In internal tests, the model ran unattended for 30 hours to build a Slack/Teams-like chat app, generating ~11,000 lines of code, up from Opus 4’s seven-hour autonomy earlier this year. Anthropic claim…

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