Gemini 3 Pro Is Now on Overchat AI

TLDR

• Gemini 3 Pro was Google's most intelligent AI model at its November 2025 launch, scoring 1,501 on LMArena — the highest score in the world at the time, beating GPT-5.1, Claude Sonnet 4.5, and Grok 4.1 on nearly every major benchmark.
• Update (June 2026): the landscape has moved on. Google's current flagship is Gemini 3.1 Pro (released February 2026), which supersedes the Gemini 3 Pro covered here. The overall #1 model today is Claude Opus 4.8 (released May 28, 2026), which leads the Artificial Analysis Intelligence Index at 61.4 and is the strongest for coding. The current competitive set is GPT-5.5, Gemini 3.1 Pro, Grok 4.3, and Claude Opus 4.8.
• The jump from Gemini 2.5 Pro was massive — Gemini 3 Pro is nearly 50x better at math, making the old flagship effectively obsolete for reasoning-heavy work.
• Two versions are available: the base Gemini 3 Pro and Gemini 3 Pro Deep Think, an enhanced reasoning mode that scores 41.0% on Humanity's Last Exam and 93.8% on GPQA Diamond.
• Claude Sonnet 4.5 only beats Gemini 3 Pro on one benchmark — SWE-bench Verified — where it edges ahead by 1% (77.2% vs. 76.2%).
• Google designed the model around three core capabilities: learning (synthesizing multimodal information), building (tops WebDev Arena at 1487 Elo for zero-shot generation), and planning (maintained focus for a full simulated year on Vending-Bench 2).
• The 1 million-token context window lets you feed entire research papers, long videos, or massive datasets into a single prompt.
• Gemini 3 Pro now powers AI Mode in Google Search — the first time Google shipped a new Gemini model in Search on launch day — enabling visual layouts and interactive simulations.
• API pricing is $2 input / $12 output per million tokens for prompts up to 200K, rising to $4/$18 for larger prompts; cheaper than Claude Sonnet 4.5 ($3/$15) but pricier than GPT-5.1 ($1.25/$10).
• Gemini 3 Pro is available on Overchat AI, the Gemini app (Google AI Pro $19.99/mo, Ultra $49.99/mo, free tier with caps), Google Workspace, AI Studio, Vertex AI, Gemini CLI, and third-party tools like Cursor, GitHub Copilot, JetBrains, and Replit.
• Released November 18, 2025.

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What is Gemini 3 Pro?

Gemini 3 Pro was Google's most intelligent AI model at its November 2025 launch. Just like Gemini 2.5 Pro, the model it replaced, it can process text, images, video, audio, and write code.

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Note that Google has since moved on: the current Google flagship is Gemini 3.1 Pro, released in February 2026, which refreshed the Gemini 3 Pro covered in this article. If you want the very latest Google model, look for Gemini 3.1 Pro.

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When comparing the Gemini 3 Pro vs Gemini 2.5 Pro, the new model scores 1,501 on the LMArena benchmark, while the Gemini 2.5 Pro scores 1,451.

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The model is particularly well suited to advanced workflows. Google specifically points out that it’s best at:

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• Learning — synthesize information across multiple formats and languages
• Building — generate interactive code and visualizations from complex prompts
• Planning — execute multi-step workflows with consistent decision-making

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The Gemini 3 Pro is available in two versions: there is the base version and then there is the enhanced reasoning model, Gemini 3 Pro Deep Think, built on top of the base model.

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Both absolutely crush it in major benchmarks:

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At launch in November 2025, these scores were the highest in the world. As of June 2026 that is no longer the case — for coding in particular, Claude Opus 4.8 now leads, posting 88.6% on SWE-bench Verified and 69.2% on SWE-bench Pro (versus 54.2% for Google's current Gemini 3.1 Pro). Gemini 3 Pro remains a very capable reasoning and multimodal model, but it is no longer the top pick for coding.

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Gemini 3 Pro vs Other AI Models

If you’re wondering how Gemini 3 Pro compares to other top AI models, here’s what the benchmarks have to say:

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Gemini 3 Pro vs Gemini 2.5 Pro

The leap in performance compared to the previous model is absolutely massive, especially in math. The numbers speak for themselves:

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Gemini 3 Pro is nearly 50x better math than Gemini 2.5 Pro!

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Gemini 3 Pro vs Claude Sonnet 4.5 (November 2025)

Claude Sonnet 4.5 launched in September 2025 and was Anthropic's mid-tier model when Gemini 3 Pro arrived. In that November 2025 head-to-head, Gemini 3 Pro led on most benchmarks, with Claude winning on one coding test. (Anthropic's current Sonnet is now Sonnet 4.6, and its flagship is Claude Opus 4.8 — see the June 2026 context below.) The figures here reflect the launch-era comparison:

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Claude Sonnet 4.5 just about edges ahead on SWE-bench Verified (a coding test) by 1%. That's the only benchmark where it beats Gemini 3 Pro.

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Where to Access Gemini 3 Pro?

Gemini 3 Pro is available now across multiple platforms. Here's where you can access it today.

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Overchat AI

The fastest way to try Gemini 3 Pro is on Overchat AI. You can start chatting with the model right now.

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Chat with Gemini 3 Pro for on Overchat AI

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Google Gemini App

Gemini 3 Pro is rolling out to the Gemini app on web, iOS, and Android. All users will get access, starting with paid subscribers.

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• Google AI Pro subscribers ($19.99/month)
• Google AI Ultra subscribers ($49.99/month)
• Free users — with capped messages

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Gemini app also integrates directly with Google Workspace, so, by extension, if you use Gmail, Docs, Sheets, or Drive, the new model is also available there.

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AI Mode in Search

Gemini 3 Pro is now powering AI Mode in Google Search, and, as Google stated, this is the smartest search experience the company has ever created. The new AI mode supports entirely new experiences, powered by AI, with unusual visual layouts and even interactive simulations.

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Interestingly, this is the first time Google shipped a new Gemini model in Search on launch day. You can access AI Mode directly from the Google Search homepage.

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For Developers

Developers can access Gemini 3 Pro through multiple platforms:

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• Google AI Studio — Free tier available for testing and prototyping
• Vertex AI — Enterprise-grade deployment on Google Cloud
• Gemini CLI — Command-line interface for developers
• Google Antigravity — New agentic development platform

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Gemini 3 Pro is also available on third-party platforms like Cursor, GitHub Copilot, JetBrains, Replit, and more.

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Gemini 3 Pro Pricing

Gemini 3 Pro pricing is competitive with other frontier models:

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• Input tokens — $2.00 per million tokens (≤200K), $4.00 per million (>200K)
• Output tokens — $12.00 per million tokens (≤200K), $18.00 per million (>200K)
• Context caching — $0.20–$0.40 per million tokens

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For comparison at launch (November 2025), GPT-5.1 cost $1.25 input / $10 output, while Claude Sonnet 4.5 cost $3 input / $15 output. Gemini 3 Pro's $2 / $12 pricing has carried over to its successor, Gemini 3.1 Pro. Among today's flagships, Grok 4.3 is the cheapest at $1.25 input / $2.50 output, while Claude Opus 4.8 runs $5 input / $25 output and GPT-5.5 is $5 input / $30 output.

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What Can You Do With Gemini 3 Pro?

Google designed Gemini 3 Pro around three core capabilities: learning, building, and planning. Here's what that means in practice.

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Learning

Gemini 3 Pro excels at synthesizing information across multiple formats and languages. It can process text, images, video, audio, and code simultaneously.

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Google showed examples like:

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• Deciphering handwritten recipes in different languages and compiling them into a family cookbook
• Analyzing academic papers and generating interactive study materials with code
• Breaking down video lectures into flashcards and visualizations

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The model's 1 million-token context window means you can feed it entire research papers, long videos, or massive datasets in a single prompt.

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Building

Gemini 3 Pro tops the WebDev Arena leaderboard at 1487 Elo. It's exceptional at zero-shot generation and handles complex prompts with rich, interactive output.

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Google's demos included:

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• Coding a retro 3D spaceship game from a simple prompt
• Building detailed 3D voxel art that can be deconstructed and remixed
• Creating playable sci-fi worlds with shaders and physics

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The model generates richer visualizations and deeper interactivity than previous versions. It's built for developers who want to go from idea to prototype fast.

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Planning

On Vending-Bench 2, which simulates managing a vending machine business, Gemini 3 Pro maintained focus for a full simulated year. It generated significantly higher returns than competing models.

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In the real world, this translates to better performance on multi-step workflows — research projects, complex analysis, strategic planning.

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Bottom line: Gemini 3 Pro handles the kinds of tasks that require deep reasoning, technical precision, and the ability to work with massive amounts of information.

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Bottom Line

When it launched in November 2025, Gemini 3 Pro was Google's most intelligent AI model and the highest-ranked model in the world, beating GPT-5.1, Claude Sonnet 4.5, and Grok 4.1 on nearly every major benchmark. It remains a strong, widely available model on Overchat AI.

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As of June 2026, the picture has changed. Google's current flagship is Gemini 3.1 Pro (February 2026), which superseded the Gemini 3 Pro covered here and sits around #3 on the Artificial Analysis Intelligence Index (57). The overall #1 is now Claude Opus 4.8 (AA Index 61.4), which is also the best model for coding. The current four-way race is between Claude Opus 4.8, GPT-5.5, Gemini 3.1 Pro, and Grok 4.3 — so if you want the very smartest model today, Gemini 3 Pro is no longer the automatic answer.

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Start chatting with Gemini 3 Pro on Overchat AI today.

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FAQs

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What is Gemini 3 Pro?

Gemini 3 Pro is a Google DeepMind multimodal reasoning model released in November 2025. It can process text, images, video, audio, and code with a 1 million-token context window, and at launch it topped the LMArena leaderboard at 1501 Elo. It was Google's most advanced model at the time; Google's current flagship is the newer Gemini 3.1 Pro (February 2026).

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Is Gemini 3 Pro better than Claude Sonnet 4.5?

At launch in November 2025, yes on nearly all benchmarks. Gemini 3 Pro outperformed Claude Sonnet 4.5 on reasoning (37.5% vs 13.7% on Humanity's Last Exam), factual accuracy (72.1% vs 29.3% on SimpleQA), and multimodal tasks, while Claude edged ahead on SWE-bench Verified (77.2% vs 76.2%). Both have since been superseded: Anthropic's current models are Claude Sonnet 4.6 and the flagship Claude Opus 4.8 (the overall #1 model and best for coding as of June 2026), and Google's current flagship is Gemini 3.1 Pro.

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How much does Gemini 3 Pro cost?

Gemini 3 Pro costs $2 per million input tokens and $12 per million output tokens for prompts up to 200K tokens. For larger prompts, pricing increases to $4 input and $18 output per million tokens. You can also access Gemini 3 Pro for free on Overchat AI with no credit card required.

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What is Gemini 3 Deep Think?

Gemini 3 Deep Think is an enhanced reasoning mode that pushes Gemini 3 Pro's performance even further on complex problems. It achieves 41.0% on Humanity's Last Exam and 93.8% on GPQA Diamond. Deep Think takes longer to respond but delivers significantly better results on difficult reasoning tasks. It will be available to Google AI Ultra subscribers in the coming weeks.

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Where can I try Gemini 3 Pro?

You can try Gemini 3 Pro on Overchat AI right now. It's also available in the Google Gemini app, AI Mode in Google Search, Google AI Studio, Vertex AI, and through third-party platforms like Cursor, GitHub, JetBrains, and Replit.

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When was Gemini 3 Pro released?

Gemini 3 Pro was released on November 18, 2025. Google shipped it across multiple products on launch day, including the Gemini app, AI Mode in Search, and developer platforms.