Leaked launch plans circulating this week suggest Google DeepMind’s Gemini 3.5 Pro is targeting a general availability date of July 17, 2026, arriving nearly six weeks later than originally expected and landing in what may be the most competitive single week in AI model history — days after GPT-5.6 and Grok 4.5.
The leaks, which Google has not officially confirmed, come primarily from industry reporting and posts on X from developers tracking early access builds. One widely shared thread laid out the core specs.
A Ground-Up Rebuild, Not a Tune-Up
According to the leaked details, Google scrapped its original plan to build Gemini 3.5 Pro on top of the existing Gemini 2.5 Pro base and instead ran an entirely new pretraining process — a decision reportedly responsible for the delay from an originally planned June launch.
The rebuilt model is said to ship with a 2-million-token context window, twice the size of anything currently available in the frontier model field, and a “Deep Think” extended reasoning mode gated behind Google’s $250-per-month AI Ultra subscription tier.
Leaked benchmarks point to a major jump in frontend and design capability specifically — better UI and layout judgment, cleaner generated interfaces, and stronger SVG generation — alongside improved one-shot coding and multi-step reasoning performance. API pricing is rumored to land around $1.25 per million input tokens and $10 per million output tokens, positioning it toward the premium end of the current market.
Competing Leaks, One Consistent Date
Not every detail in circulation lines up. Multiple leak threads reportedly contradict each other on secondary specs, and Google has offered no official comment on any of the figures. But the July 17 target date has shown up consistently across separate leaks and reporting, with July 24 mentioned as a fallback if Google needs more time.
The timing matters beyond Google’s own roadmap. If Gemini 3.5 Pro lands as leaked, it would arrive the same week Meta is pushing its own Muse Spark 1.1 model and new developer API, and just days after OpenAI’s GPT-5.6 and xAI’s Grok 4.5 releases — compressing what would normally be a staggered release calendar into a single, unusually dense stretch of frontier model launches.
For developers and enterprises evaluating which model to build on, mid-July 2026 is shaping up to be a rare moment where several major labs’ best available models are all on the table within the same two-week window.
Google has not set an official announcement date and has not responded publicly to the leaked specifications.
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