Claude Opus 5.5 Launches: Stronger, 40% Cheaper
Anthropic's Claude Opus 5.5 matches Fable 5.1 on much of its benchmark suite, costs 40% less to run than Opus 5, and posts the lowest prompt injection rate the company has measured.
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Anthropic's Claude Opus 5.5 matches Fable 5.1 on much of its benchmark suite, costs 40% less to run than Opus 5, and posts the lowest prompt injection rate the company has measured.
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