New Gemini 4 Pro checkpoint lands in Arena with extended thinking

Haleemah @HaleeeemahhOriginally posted 2026.09.29

Open original on X

new gemini 4 pro checkpoint just dropped in arena with extended thinking most testers are getting worse results than the first checkpoint some are saying it’s an upgrade from the last checkpoint feels like another internal test so If you’re testing it, focus on multi-run consistency, not a single generation and note these checkpoints won’t stay up long hopefully the final release model (rumored weeks away) wouldn’t be nerfed on day 1 like Lyra says