Gemini 3 Pro Preview Release: What We Know So Far, Key Details

The wait for Google’s next major AI model is nearly over, as compelling evidence points to the release of the Gemini 3 Pro Preview in November 2025.

This highly anticipated AI model launch was confirmed after its infrastructure code was discovered within Google’s own Vertex AI platform.

For developers and tech enthusiasts, this preview signals the arrival of significant Google AI advancements, including a massive 1M token context window and deeply enhanced reasoning model improvements.

What the Leaks Reveal About the Launch

The confirmation of the Gemini 3 Pro Preview comes directly from Google’s own systems. An identifier, “gemini-3-pro-preview-11-2025,” was found in Vertex AI’s network logs,

which strongly indicates a November preview window, with a wider public release likely to follow in December.

This timeline aligns with comments from CEO Sundar Pichai, who confirmed the model would arrive before the end of 2025.

The discovery wasn’t just a name; it included raw technical specifications, revealing a two-tiered system with context windows of 200,000 and 1,000,000 tokens.

Major Upgrades: Context, Reasoning, and Multimodality

This Gemini 3.0 update is focused on transformative capabilities. The most significant upgrades include:

1. 1M Token Context Window: This massive workspace is the headline feature, allowing the model to process and analyze entire codebases, lengthy documents, or complex datasets in a single instance.
2. Deep Think Reasoning: This represents a significant upgrade to the model’s problem-solving skills. Early tests show it can accurately handle complex visual tasks (like counting fingers in an image) and achieves nearly 35% accuracy on advanced ARC-AGI-2 tests, far surpassing competitors.
3. Integrated Multimodal AI Capabilities: The model is built from the ground up to be multimodal. Technical files confirm it is designed to natively process a mix of image, video, and audio inputs, making it a truly unified and versatile tool.

The Hardware Powering Gemini 3 Pro

These Google AI advancements are powered by the new Trillium TPU v6 chips. Each chip delivers four times the AI computing power of its predecessor and is 67% more energy-efficient.
By linking hundreds of these chip pods together in its data centers, Google has created a “building-scale” infrastructure that enables Gemini 3 Pro to perform demanding tasks-like analyzing a 45-minute video or debugging thousands of lines of code-in seconds.

How to Get Access to the Gemini 3 Pro Preview

There are several pathways for gaining early access to the model:

• Enterprise Early Access: Google is providing first access to enterprise clients to integrate Gemini 3 with Workspace and Google Cloud.
• AI Studio Preview: Select developers are already getting sneak peeks through Google AI Studio. To increase your chances of receiving an invite, it’s recommended to log in regularly and update your intended use case.
• Sign Up for the Waitlist: The most direct method for the general public is to join the official waitlist on the Google AI website. This requires filling out a short survey about your technical background and how you plan to use the model.

Conclusion

The Gemini 3 Pro Preview release is set to be a landmark AI model launch in late 2025. With a powerful combination of a 1M token context window, next-generation reasoning, and highly efficient hardware, it promises to unlock new frontiers for developers and businesses.

As the November preview approaches, the tech community is eagerly waiting to see the full impact of these groundbreaking Google AI advancements.