Google delays Gemini 3.5 Pro launch to July as it tweaks its new frontier AI model

The release date for Google’s next frontier AI model has been pushed to July, Business Insider has learned.

The company previously said it planned to roll out the new Gemini 3.5 Pro model in June.

However, it is now targeting a July launch as it spends extra time gathering feedback from early testers and tweaking the model, according to a person familiar with the matter.

Google teased the new model at its I/O developer conference in May but said it wasn’t quite ready.

At the time, CEO Sundar Pichai said the model would launch “next month.” A Google spokesperson declined to comment.

With this upcoming model, the pressure is on for Google at a moment of intense competition among the AI labs.

While Gemini 3 outperformed expectations last year, Anthropic and OpenAI are continuing to pull ahead of Google in coding, which has emerged as the first major enterprise use case for modern AI.

The source said that Google pushed the launch date back so it could spend more time gathering real-world use cases from early testers.

The new model has been available to some users on Google’s Antigravity platform and on the AI benchmarking site LMArena, they said.

The new Gemini 3.5 Pro model is expected to be better at long-horizon tasks and powering agents.

Google has also incorporated feedback from its recent Flash 3.5 model into 3.5 Pro, the source said, confirming a theory that Business Insider floated at I/O.

That includes criticisms that Flash consumed tokens too quickly.

Contact this reporter via email at hlangley@businessinsider.com or Signal at 628-228-1836.

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