Machine Learning

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Anthropic Slashes Claude Opus 4.5 Pricing by 80% While Adding 200K Token Context and Enhanced Computer Control

Anthropic Slashes Claude Opus 4.5 Pricing by 80% While Adding 200K Token Context and Enhanced Computer Control

Nov 27, 2025
Simon Willison’s Weblog

Anthropic cuts Claude Opus 4.5 pricing by 80% to $5 per million input tokens while doubling context to 200K and adding enhanced computer control features, though testing shows frontier AI models now perform so similarly that meaningful differences become nearly impossible to detect.

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