Tagged: Claude Opus 5

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Karpathy spent $10 and got Claude Opus 5 to build a Lord of the Rings 3D world

Claude Opus 5 quadruples ARC-AGI-3 reasoning record, hitting 30.2%

Claude Opus 5 ships with thinking on by default, breaks old API calls

Claude Opus 5 just scored 4x higher than GPT-5.6 Sol on novel problem-solving

Anthropic drops Claude Opus 5 with tougher cyber defenses after Fable 5 standoff