Sonnet 5 Closed the Gap With Opus. The Rumor Mill Closed It Too.

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Sonnet 5 closes real distance on Opus, with numbers worth having precisely. The more interesting failure happened in the same hour: a rumor-tracker's fabricated benchmark, a major outlet's pricing slip, and Anthropic's own quiet rescoring of Sonnet 4.6, three proofs that verifying claims about a model just got as hard as verifying the model itself.

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