Google confirms Gemini 3.5 Pro late-June launch — 2M-token context window targets enterprise procurement window ahead of EU AI Act August deadline
Google reconfirmed at WWDC-week briefings that Gemini 3.5 Pro will ship in late June 2026 with a 2-million-token context window, doubling Flash's 1M and surpassing every production frontier model in market. The release window is engineered to land between Apple's Siri-Gemini launch and the EU AI Act's August 2 transparency deadline.
The 2M context is the headline lever and the procurement-window timing is the strategic one. Pro will hit the market in the same calendar window as enterprise budget cycles for Q3 procurement and one month before EU transparency rules require frontier-model providers to publish detailed disclosure packages. Google is positioning Pro as the only frontier-tier model that is compliance-ready and context-capable simultaneously for the largest enterprise spend window of the year.
The Flash benchmark legacy matters here. Gemini 3.5 Flash already scored 55 on the Intelligence Index against Claude 52 and Grok 53, at 284 tokens/second throughput and $1.50/$9 per million tokens. If Pro extrapolates that capability curve to 2M context, Google holds frontier-context-length leadership at the same moment Anthropic's Mythos Preview launches enterprise-tiered to Project Glasswing partners and OpenAI's GPT-5.6 lands. Three flagship launches in one calendar month — the first time the frontier-model market has had this density of major releases simultaneously.
Google Blog — Gemini 3.5 — frontier intelligence with action → · WaveSpeed — Gemini 3.5 Pro Is Coming Next Month — What the Flash Release Already Tells Us →