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CATCH #1782 DETECTED OCT 1, 2026 16:23 UTC
THE CATCHscore 8/10
EXHIBIT 1782 · FLASH
Oct 1, 2026 16:23 UTC lmarena lmarena.ai/leaderboard
LMArena has added a new model, 'claude-sonnet-5-5-xhigh', to its leaderboard, suggesting an upcoming release from Anthropic.

READY TO POST:

looks like a new claude-sonnet-5-5-xhigh model just popped up on the lmarena leaderboard. anthropic might have something new brewing.

keep an eye on anthropic! a 'claude-sonnet-5-5-xhigh' appeared on lmarena, which often tests models weeks before launch. could be a big one.

EVIDENCE — the receipts
LMArena: 1 new model appeared on the leaderboard
(labs test unreleased models here — often weeks before launch)

[named / preview] (1)
  + claude-sonnet-5-5-xhigh

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