Gemini 3 Pro

Overview

Gemini 3 Pro is Google DeepMind's flagship model from November 2025, released November 18, 2025. It is the first model in the Gemini 3 series and represented a significant capability jump at launch, establishing Google as a serious competitor to Anthropic and OpenAI at the frontier. It has since been joined by Gemini 3.1 Pro (February 2026), which improves substantially on reasoning benchmarks, but Gemini 3 Pro remains available and relevant for applications that don't require 3.1 Pro's enhanced reasoning depth.

Gemini 3 Pro is the product of merging Google Brain and DeepMind into a single organization under [[Demis Hassabis]] — the first major Gemini release to fully reflect the combined capabilities of both teams.

Specifications

• Developer: Google DeepMind
• Model String: gemini-3-pro (check Google AI docs for versioned string)
• Release Date: November 18, 2025
• Type: Natively Multimodal LLM (text, audio, images, video, code)
• Context Window: 1,048,576 tokens (1M+)
• Access: Google AI Studio, Gemini API, Vertex AI, Gemini Advanced
• Pricing: See Google AI pricing for current rates

Capabilities

Multimodal Reasoning: Natively processes and reasons across text, images, video, audio, and code simultaneously — not as separate pipelines but as an integrated reasoning system.

Long-Context Comprehension: 1M+ token context window, effective for large document analysis, full codebase reasoning, and long autonomous task sessions.

PhD-Level Reasoning: Strong performance on graduate-level reasoning benchmarks, including competitive results on GPQA Diamond and mathematical reasoning benchmarks at launch.

Coding: Strong software engineering capability, particularly on multi-file and architectural reasoning tasks.

Vision & Video: First-class video understanding — can reason about temporal sequences, changes across frames, and complex visual narratives, not just static images.

Limitations

Superseded on reasoning benchmarks by Gemini 3.1 Pro (Feb 2026), which more than doubled 3 Pro's ARC-AGI-2 score. For maximum reasoning depth, 3.1 Pro is the better choice. For high-volume or cost-sensitive workloads, Gemini 3 Flash offers a better price/performance trade-off.

Recent Developments

• November 18, 2025 Launch: Released alongside Gemini 3 Deep Think, establishing the Gemini 3 series as a credible frontier model family.
• Followed by 3.1 Pro (February 2026): The reasoning performance of 3 Pro was significantly surpassed by 3.1 Pro on ARC-AGI-2, though 3 Pro retains its place as a capable and well-established model for many use cases.

Last Updated

February 26, 2026