Anthropic drops the surcharge for million-token context windows, making Opus 4.6 and Sonnet 4.6 far cheaper
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Anthropic removes the surcharge for long contexts in Claude Opus 4.6 and Sonnet 4.6: requests with than 200,000 tokens no longer cost up to twice as much. The article Anthropic drops the surcharge for million-token context windows, making Opus 4.6 and Sonnet 4.