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CATCH #1658 DETECTED SEP 26, 2026 02:28 UTC
THE CATCHscore 9/10
EXHIBIT 1658 · FLASH
Sep 26, 2026 02:28 UTC lmarena lmarena.ai/leaderboard
LMArena added 4 new models to its leaderboard, including two anonymously codenamed models (mimo-v2-6-flash-text, mimo-v2-6-pro-mw0j-text) and two named models (claude-opus-5.5-high-vertex, gpt-6-sol-max-text). The anonymous models are likely stealth tests.

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READY TO POST:

lmarena just added some new models to its leaderboard, including a couple of anonymous 'mimo-v2-6' models. feels like a stealth test is brewing.

seeing claude-opus-5.5-high-vertex and gpt-6-sol-max-text show up on lmarena. interesting to see what these new models bring to the table.

EVIDENCE — the receipts
LMArena: 4 new models appeared on the leaderboard
(labs test unreleased models here — often weeks before launch)

[anonymous codenames — likely stealth] (2)
  + mimo-v2-6-flash-text
  + mimo-v2-6-pro-mw0j-text

[named / preview] (2)
  + claude-opus-5.5-high-vertex
  + gpt-6-sol-max-text

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