Google Misses Its Own Deadline: Gemini 3.5 Pro Pushed to July as Talent Exits Mount Sundar Pichai stood on the Google I/O stage in May and told the world to give Google until next month for Gemini 3.5 Pro. Next month is almost over. The model is not here. Alphabet has confirmed the flagship model slips to July for what the company calls final adjustments. The timing is brutal. In the same week Google is announcing its own deadline miss, four of its top researchers walked out the door. Noam Shazeer and John Jumper are gone. Jonas Adler and Alexander Pritzel, the architects of Google’s AI coding and pretraining programs, are joining Anthropic. The combination of a missed product deadline and visible talent hemorrhaging creates a narrative problem that Demis Hassabis cannot talk his way out of with platitudes about expected industry movement. Google did land a real technical result this week: Gemini 2.5 Pro with Deep Think posted 82.4% on GPQA Diamond and 89.8% on MMLU-Pro, scores that reflect genuine reasoning capability. That is not nothing. But 2.5 Pro is not what was promised. Pichai promised 3.5 Pro by June. The gap between what was said and what shipped is now public. Prediction market Polymarket has moved to 50-55% odds of a June 30 general release, signaling widespread skepticism. The model remains available in limited Vertex AI enterprise preview. Google has the resources to recover. Whether it has the stability right now to do it on any particular timeline is a separate question. Keywords: Gemini 3.5 Pro delay July, Google AI deadline missed, Alphabet Gemini 2026, Sundar Pichai Google I/O