CONFIRMEDDate confidence: CONFIRMEDStated as firmHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all CONFIRMED pins83% CONFIDENCEOverall confidence: 83%How well the pin's source and references back up its dates.Weighted average of how firmly 3 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or better
Google's post "Gemini 3 Deep Think is now available in the Gemini app" is dated 4 December 2025 and says it is rolling out to Google AI Ultra subscribers that day; Wikipedia[2] lists the release as 3 December.Google rolls out Gemini 3 Deep Think to Google AI Ultra subscribers in the Gemini app, an enhanced reasoning mode that scores 41.0% on Humanity's Last Exam and 45.1% on ARC-AGI-2.
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