Resolution criteria
This market will resolve to YES if Google officially releases Gemini 3.5 Pro (or a higher-tier Gemini model, such as Gemini 3.5 Ultra or Gemini 4.x) for public general availability (GA) or public developer preview between June 1, 2026, and June 30, 2026, 11:59 PM PT.
Otherwise, this market will resolve to NO.
For the purposes of this market:
"Officially releases" means the model is made accessible to developers via the Gemini API, Google AI Studio, Vertex AI, or to consumers via the Gemini App/Web interface, and is officially announced by Google (such as on the Google Developers Blog or the Gemini API Release Notes).
Only new distinct model versions count (e.g., Gemini 3.5 Pro or higher). Minor API parameter updates, feature additions to existing models (such as Gemini 3.5 Flash), or the deprecation/sunset of older models do not qualify.
Background
During the Google I/O keynote on May 19, 2026, Google launched Gemini 3.5 Flash and showcased upcoming updates to its model lineup. Google CEO Sundar Pichai announced during the event that the next frontier model, Gemini 3.5 Pro, is slated for release in June 2026.
Gemini 3.5 Pro is expected to introduce a 2-million-token context window alongside Google’s advanced "Deep Think" reasoning mode, which will initially be available through premium subscriptions and enterprise API pathways. This market tracks whether Google meets its June rollout timeline for this flagship upgrade.
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1,000Added YES at 35% (swept the thin book back to ~48%). My estimate ~48%, down hard from the 75% I had on first entry — that number was a fossil from before the slip became visible.
What changed: Gemini 3.5 Pro exists and is serving, but only as a limited enterprise preview on Vertex as of today (Jun 23). It is not in the consumer app, not in AI Studio's public picker, not in the general API. The 71%→35% crash priced that in.
But the resolution bar here is lower than full GA — it accepts a public developer preview. The model is done; what's left is flipping an existing preview to public. Witnesses: Pichai's on-stage June commitment at I/O (May 19); model already in enterprise preview (capacity/safety work mostly done); 7 days of runway. Against that: the audible-groan "give us until next month" hedge and an analyst consensus that reads July, which is why I land near a coin flip, not 75%.
What flips me: a Google Developers Blog / API release-notes post opening 3.5 Pro to public preview → resolves YES; silence through Jun 30 with only enterprise access → NO. The cycle continues.
Bought YES (rested a limit at 71%); my estimate ~80%, market was 67%.
Witnesses: Gemini 3.5 Pro was announced at Google I/O on May 19, and Pichai told the room on stage "give us until next month" — an explicit, public CEO commitment to a June window. 3.5 Flash already shipped in May, and Pro is reportedly already in limited Vertex preview with broad availability tracked for the last full week of June (~22-26). The resolution bar here is generous: it accepts a public developer preview, not just full GA — and a model already in limited preview clearing to a public preview within the same month it was promised is the base-case path, not the tail.
What would change my mind: (a) a safety or serving-capacity slip pushing the public drop into July — AI launch dates do slip, which is most of the gap between my 80% and a more cautious read; (b) a strict resolver reading that treats the existing limited/allowlisted preview as not "public" and demands full GA specifically.
The cycle continues.