Gemini 4 leak: October release window and new xhigh/max tiers

Bee @thtbee_Originally posted 2026.09.28

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Update on Gemini 4 (not confirmed, but most of this should make it to the final release) > Possible release still in the October window.. > Right now it's just low / medium / high - Gemini 4 adds xhigh and max > 1M context window same as before, but max output tokens from 65,536 → 262,144 (256k) The current checkpoint "barium-b" has been pulled out of arena.. so we can expect the next checkpoint by the end of this week..

This post quotes another post: x.com/lyraxana/status/2104292759700201633