Google DeepMind’s Gemini 3.5 Pro Fails to Meet Third Launch Deadline
In a dramatic turn of events, Google DeepMind’s Gemini 3.5 Pro has reportedly missed its third consecutive launch deadline, including the highly anticipated July 17, 2026 target date. As reported by TechTimes, the revamped model failed to meet key internal reliability standards, including recurring hallucinations, and fell short of competitor benchmarks set by OpenAI’s GPT-5.6. Google is now reportedly contemplating a stopgap Flash release to fill the void for developers.
The saga unfolded at Google I/O in May, when CEO Sundar Pichai assured a frustrated developer audience to “give us until next month” — a promise that remained unkept. Google had discarded the original Gemini 3.5 Pro architecture entirely and conducted a comprehensive rebuild from scratch, aiming to fill major performance gaps in mathematical reasoning, SVG scene generation, and long-context retrieval. The rebuilt model was anticipated to feature a 2 million token context window — double the industry standard — and a new Deep Think reasoning mode exclusive to the $250/month Ultra subscription.
The delay is particularly detrimental considering the competitive landscape: GPT-5.6 launched on July 9, and Grok 4.5 debuted the same week, leaving Google without a flagship Pro model during the most fiercely contested period in AI history. Enterprise developers who had planned migrations around the July 17 date are now left in limbo. Google has yet to issue an official statement on the revised launch timeline.
Source: TechTimes — Rebuilt Gemini 3.5 Pro Misses Third Deadline: Google Eyes Stopgap Release