Google's Gemini 3.5 Pro Delayed by Bureaucracy and Technology Setbacks, Reports Say

Google's next-generation flagship AI model, Gemini 3.5 Pro, has reportedly faced delays due to a combination of bureaucratic obstacles and technical setbacks. Multiple outlets, including Bloomberg News, reported that the model has not yet met internal performance targets for release.

Gemini 3.5 Pro was expected to follow Gemini 2.5 Pro as Google's most capable AI model, featuring significant improvements in reasoning, coding, and multimodal understanding. The delay suggests the gap between internal development goals and actual model performance remains wider than anticipated.

Since last year's Gemini 2.5 Pro launch, the competitive landscape has shifted considerably. Anthropic has continued iterating its Claude series, OpenAI is pushing forward with next-generation models, and challengers like DeepSeek have gained traction. Gemini 3.5 Pro was seen as Google's vehicle to reassert its technical leadership.

Sources familiar with the situation cited challenges in model reasoning capabilities and safety evaluation as factors requiring additional engineering time. Internal approval processes and cross-team coordination were also named as contributors to the slower pace.

Alphabet shares dropped on the news, indicating investor sensitivity to any signal that Google is losing momentum in AI. The company had showcased some Gemini 3.5 capabilities at Google I/O 2026 but stopped short of providing a firm release date.

The timing is significant. The AI model race is at a fever pitch, with every major lab racing to ship its strongest model. Anthropic recently lifted restrictions on its Fable/Mythos models, OpenAI's GPT-5.6 is in development, and DeepSeek continues to expand its presence.

For enterprise customers building on Google's AI stack, the delay means adjusting product roadmaps that depend on Gemini 3.5 Pro. Some developers may evaluate alternatives from competing platforms, potentially impacting Google Cloud's AI revenue growth.

Google has not issued an official statement on the delay reports. The market will be watching closely for any updated timeline, and the eventual reception will hinge on whether the final product delivers on the promises made at I/O.