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Anthropic Research news

The latest AI and developer news from Anthropic Research, with short summaries.

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Project Vend: Stage 2

Claude-powered store clerk Claudius improved with better tools and procedures, but remained easy to fool.

·2025.12.18 00:00

Constitutional Classifiers: Universal Jailbreak Defense

Anthropic lowered the universal jailbreak success rate to 4.4% with Constitutional Classifiers.

·2025.02.03 00:00