Where is Gemini 3.5 Pro? The case of the missing AI model. | Mashable
Where is Gemini 3.5 Pro? The case of the missing AI model. | Mashable
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Where is Gemini 3.5 Pro? The case of the missing AI model.
As OpenAI and Anthropic race ahead with boundary-breaking frontier models,
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Where is Gemini 3.5 Pro? The case of the missing AI model.
As OpenAI and Anthropic race ahead with boundary-breaking frontier models, Google stalls.
Timothy Beck Werth
Timothy Beck Werth
Tech Editor
Timothy Beck Werth is the Tech Editor at Mashable, where he leads coverage and assignments for the Tech and Shopping verticals. Tim has over 15 years of experience as a journalist and editor, and he has particular experience covering and testing consumer technology, smart home gadgets, and men’s grooming and style products. Previously, he was the Managing Editor and then Site Director of SPY.com, a men's product review and lifestyle website. As a writer for GQ, he covered everything from bull-riding competitions to the best Legos for adults, and he’s also contributed to publications such as The Daily Beast, Gear Patrol, and The Awl.
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September 11, 2026
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Google I/O event
in May, CEO Sundar Pichai announced that the company's newest frontier model, Gemini 3.5 Pro,
would launch in June
.
"We are also excited for 3.5 Pro," Pichai said at a pre-Google I/O media briefing. "We are using it internally. It's showing great improvements. We are still testing and refining it, and it will roll out to everyone next month."
That never happened.
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June eventually turned into July, and then August, and as of Sept. 10, there's still no sign of the model. The Google DeepMind website states, "3.5 Pro coming soon," as it has for months. Meanwhile, the long-time leader of Google DeepMind, Demis Hassabis, has been shuffled into a new position.
As Google stalls on Gemini 3.5 Pro, its chief AI rivals are releasing boundary-breaking new models. OpenAI recently
released GPT-6 Astra
, kicking off a new generation of GPT models, and Anthropic recently
released Fable 5.1
. Both models have made critical advances in cyber c