✳ the wire · intel

Gemini 3.5 Pro surfaced on LM Arena for about 50 minutes, then vanished

Gemini 3.5 Proreportedby ArtificialWatch

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ArtificialWatch title card · one credible outlet, unconfirmed

Multiple users caught Gemini 3.5 Pro in LM Arena's blind battles before it was pulled, reportedly visible for around fifty minutes. Early A/B testing has been under way for some time, and the current reported launch target is the first week of August.

A fifty-minute appearance is a stronger signal than it sounds. Arena checkpoints get pulled when a lab decides the comparison is running before it wants it to — which is a scheduling decision, not a capability one, and scheduling decisions are made against a date. This is the same pattern that preceded Gemini 3.6 Flash, which we called two days early off an Arena blind-test checkpoint.

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Claude Opus 5 went live at 16:51 UTC. Members had the alert at 16:52. Free gets a Chrome push and an email about 15 minutes after members.

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