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Anthropic· Released Sep 22

Research with Claude Opus 5.5

LiveNerf: daily check for Opus 5.5 degradationSep 29

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ninjahawk

@ninjahawk · Sep 29

Month-long benchmark re-running 78 calibrated questions daily against launch-week results, with Opus 5 as control, to statistically detect any quiet post-release quality drop.

More from Claude Opus 5.5

All 201
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