Gemini 3 vs ChatGPT: Features, Pricing & How to Choose
With Google's newly released Gemini 3 Pro (launched on November 18, 2025), the AI landscape has entered a new era of competition, directly challenging OpenAI's well-established ChatGPT-5.1.
This comprehensive comparison of Gemini 3 vs ChatGPT examines how these two AI powerhouses perform across critical dimensions including core reasoning abilities, multimodal processing, coding performance, and real-world applications to help you decide which model best fits your needs.
What is Gemini 3?
Gemini 3 is Google's newest flagship AI model, announced in November 2025 and described as its most intelligent and factually accurate system to date. It delivers major advancements in deep reasoning and contextual understanding, allowing the model to interpret user intent with less prompting and generate more insightful, less generic responses.
As a fully multimodal model, Gemini 3 can process text, images, video, audio, and code simultaneously - powering tasks like medical image analysis, multilingual meeting transcription, and video comprehension.
What is ChatGPT?
ChatGPT is an advanced AI chatbot assistant created by OpenAI that enables natural, human-like conversations and assists with a wide range of tasks. Built on a Generative Pre-trained Transformer (GPT) architecture, it understands context, generates coherent text, and adapts to different writing styles.
Trained on large datasets and refined through Reinforcement Learning from Human Feedback (RLHF), ChatGPT can explain complex topics, write and improve content, support research, translate languages, and even assist with coding.
Gemini 3 vs ChatGPT: Key Features Comparison
How good is Gemini 3? Compare Gemini 3 Pro and ChatGPT-5.1 at a glance. This table highlights their core strengths and key differences to help you understand each AI’s capabilities.
| Aspect | Gemini 3 Pro | ChatGPT-5.1 |
|---|---|---|
| Core Strength | Advanced reasoning + multimodality across text, image, audio, video | Strong general intelligence, natural language depth, consistent reasoning |
| Reasoning Style | Built to "grasp depth and nuance" | Natural, human-like tone |
| Performance Focus | Excels in complex problem-solving, agentic tasks (planning & executing multi-step actions), and coding benchmarks | Noted for natural, human-like tone in copywriting and content creation |
| Contextual Understanding | Superior intent recognition - "reads the room", requires less prompting | Good conversational context, but needs explicit prompts |
| Multimodal Performance | 🏆 Built natively as multimodal model (visual reasoning + audio understanding) | Very strong text + image capabilities, with steady improvements in multimodal inputs |
| Text Processing | ✅ Advanced | ✅ Excellent (primary strength) |
| Image Processing | 🏆 Native visual reasoning - Can analyze X-rays, factory images, visual content | ✅ Good image understanding capabilities |
| Code Understanding | 🏆 Multimodal code analysis - Text + visual + execution | ✅ Strong text-based code analysis |
Here is a detailed comparison of Gemini 3 and ChatGPT-5, summarized from real forum user reviews and our own hands-on experience, covering reasoning, multimodal understanding, long-context performance, and more.
1. 🎨 Multimodal & Visual Understanding
Gemini 3 Pro shows a "generational leap" in screen understanding and visual reasoning capabilities.
| Benchmark | Gemini 3 Pro | ChatGPT-5.1 | Winner & Margin |
|---|---|---|---|
| ScreenSpot-Pro (Screen Understanding) | 72.7% | 3.5% | 🏆 Gemini 3 (+69.2% / ~20x better) |
| ARC-AGI-2 (Visual Reasoning Puzzles) | 31.1% | 17.6% | 🏆 Gemini 3 (+13.5% / Nearly double) |
| CharXiv Reasoning (Complex Charts) | 81.4% | 69.5% | 🏆 Gemini 3 (+11.9%) |
| Video-MMMU (Video Knowledge) | 87.6% | 80.4% | 🏆 Gemini 3 (+7.2%) |
| MMMU-Pro (Multimodal Reasoning) | 81.0% | 80.8% | 🏆 Gemini 3 (+0.2%) |
| OmniDocBench 1.5 (OCR Edit Distance) | 0.115 | 0.147 | 🏆 Gemini 3 (-0.032, lower is better) |
2. 🔢 Math & Advanced Reasoning
Gemini 3 Pro exhibits crushing superiority in competition-level mathematics problems.
| Benchmark | Gemini 3 Pro | ChatGPT-5.1 | Winner & Margin |
|---|---|---|---|
| MathArena Apex (Hard Math Contest) | 23.4% | 1.0% | 🏆 Gemini 3 (+22.4% / ~23x better) |
| AIME 2025 (Math - Code Execution) | 100% | — | 🏆 Gemini 3 (Absolute Win / Exclusive) |
| AIME 2025 (Math - No Tools) | 95.0% | 94.0% | 🏆 Gemini 3 (+1.0%) |
| Humanity's Last Exam (Academic Reasoning) | 37.5% | 26.5% | 🏆 Gemini 3 (+11.0%) |
| GPQA Diamond (Scientific Knowledge) | 91.9% | 88.1% | 🏆 Gemini 3 (+3.8%) |
3. 🤖 Coding & Agentic Capabilities
This is the only area where GPT-5.1 is competitive, but Gemini 3 still leads significantly in long-horizon task planning.
| Benchmark | Gemini 3 Pro | ChatGPT-5.1 | Winner & Margin |
|---|---|---|---|
| Vending-Bench 2 (Long-horizon Agent Tasks) | $5,478 | $1,473 | 🏆 Gemini 3 (+$4,004 / 3.7x better) |
| LiveCodeBench Pro (Coding Elo Rating) | 2,439 | 2,243 | 🏆 Gemini 3 (+196 points) |
| Terminal-Bench 2.0 (Terminal Coding) | 54.2% | 47.6% | 🏆 Gemini 3 (+6.6%) |
| t2-bench (Agent Tool Use) | 85.4% | 80.2% | 🏆 Gemini 3 (+5.2%) |
| SWE-Bench Verified (Agentic Coding) | 76.2% | 76.3% | 🥈 GPT-5.1 (+0.1% Marginal win) |
4. 📚 Knowledge Accuracy & Long Context
Gemini 3 chat wins decisively in reducing hallucinations (knowledge accuracy) and handling ultra-long contexts.
| Benchmark | Gemini 3 Pro | ChatGPT-5.1 | Winner & Margin |
|---|---|---|---|
| SimpleQA Verified (Parametric Knowledge) | 72.1% | 34.9% | 🏆 Gemini 3 (+37.2% / 2x better) |
| FACTS Benchmark (Search & Grounding) | 70.5% | 50.8% | 🏆 Gemini 3 (+19.7%) |
| MRCR v2 (128k Context) | 77.0% | 61.6% | 🏆 Gemini 3 (+15.4%) |
| MRCR v2 (1M Context) | 26.3% | N/A | 🏆 Gemini 3 (Exclusive Capability) |
| Global PIQA (Cross-lingual Commonsense) | 93.4% | 90.9% | 🏆 Gemini 3 (+2.5%) |
| MMMLU (Multilingual Q&A) | 91.8% | 91.0% | 🏆 Gemini 3 (+0.8%) |
5. 💰 Quick Price Comparison
If you ignore the intelligence differences between models and look only at the richness of the benefits, Google AI Pro wins by a landslide. It's not just an AI subscription - it's a super–value bundle that also gives you 2TB of cloud storage and a full productivity suite.
| Feature | ChatGPT Plus | Google AI Pro (Gemini) | ChatGPT Pro |
|---|---|---|---|
| Monthly Price | $20 | $19.99 | $200 |
| Free Trial | ✅ Free for 1st month | ✅ Free for 1st month | ❌ None |
| Best For | Daily tasks, coding, & creative writing | Google users, video creators, & long research | Power users needing unlimited access |
| Key AI Models | Advanced Intelligence (GPT-4o/5) | Most Capable Models (Gemini Advanced) | Max productivity models |
| Video Creation | Sora video generation | Veo 3.1, Flow, & Whisk tools | Expanded limits on Sora |
| Unique Bonus | • Custom GPTs • Agent mode | • 2 TB Storage included • Integration with Gmail & Docs • 1,500-page doc analysis | • Unlimited messages • Maximum memory context • Faster execution speed |
Which One Is Best, ChatGPT or Google Gemini?
Is Gemini actually better than ChatGPT? Gemini 3 Pro outperforms ChatGPT-5.1 in nearly all academic, coding, reasoning, knowledge, and multilingual benchmarks, especially in hard math, long-horizon agent tasks, and large-context reasoning.
ChatGPT-5.1 still excels in natural language generation, creative writing, and casual conversation, but lags in high-difficulty benchmark tests.
Gemini 3 vs GPT 5.1: Which Model Should You Choose?
Users can consider the following dimensions when choosing between the two models:
| Your Core Need | Recommended Choice | Core Reason | Price & Value Note |
|---|---|---|---|
| Visuals, Video, UI Analysis | 🥇 Gemini 3 Pro | Unrivaled visual understanding capabilities (20x lead) | $19.99/mo Includes Veo & Flow video tools. |
| Math & Logical Reasoning | 🥇 Gemini 3 Pro | Superior intelligence for complex problems (23x lead) | $19.99/mo Best cost-performance ratio. |
| Analyzing Huge Documents | 🥇 Gemini 3 Pro | Exclusive support for 1M ultra-long context | $19.99/mo Includes 2TB Storage (Huge Value). |
| Autonomous Complex Tasks | 🥇 Gemini 3 Pro | Strong planning skills, completes long tasks (3.7x lead) | $19.99/mo Free 1-month trial available. |
| Coding & Debugging | 🤝 Tie / Either | Performance is virtually identical (0.1% difference) | Gemini: Better value (Storage). ChatGPT: Pro tier ($200) offers unlimited usage. |
| Creative Writing, Chat, Copy | 🥈 ChatGPT-5.1 | Wins on natural tone and mature ecosystem | $20/mo Standard Plus plan. |
| Unlimited / Heavy Power Use | 🚀 ChatGPT Pro | No usage caps, designed for extreme workloads | $200/mo The only option for unlimited limits. |
Gemini 3 Use: How to Access Gemini 3 for Free
Now, the powerful creative platform SeaArt AI offers free support for the Gemini 3 model. You can access it immediately to explore its diverse features. Follow the simple steps below to learn how to use Gemini 3 and start your journey in art creation or AI character chat.
👉️ Free Image & Video Creation
Step 1. Visit seaart.ai to access the Gemini AI image generator or video generator.
Step 2. Choose "Image Editing" or "Text to Image" and enter the corresponding Gemini prompt based on the effect you want to achieve.
Step 3. Click "Generate" to start creating your image. Once the creation is complete, you can download it, share it, or use the Gemini prompt generator to refine your prompts and further optimize the generated image.
More Guidance on Gemini 3 Prompts >>
Best 10 Gemini Polaroid Prompts: Create Vintage AI Photos in 2025
15 Gemini Couple Photo Prompts: Create Romantic Images with AI
👉️ Immersive AI character chat experience
Gemini 3's strong reasoning and long-form conversation capabilities, combined with SeaArt AI's million-character library, help users enjoy unparalleled storytelling and roleplay experiences.
Step 1. Go to the AI chat page, select the AI character you want, and click "Chat Now" to start chatting.
Step 2. Click "Settings" and switch the current chat model to Gemini 3. Now you can experience Gemini 3's powerful long-memory conversation feature and build a private connection with your AI character.
Conclusion
The release of Google's Gemini 3 Pro marks a pivotal moment in the AI revolution. While ChatGPT-5.1 remains a capable tool for creative writing and casual conversation, Gemini 3 Pro currently offers superior intelligence and better value for professional and power users.
However, you don't need to commit to a subscription to experience this next-generation technology. SeaArt AI brings the power of Gemini 3 directly to your fingertips for free. Whether you want to leverage its advanced multimodal capabilities to generate stunning AI art and videos or dive into immersive, long-memory roleplay with diverse AI characters, SeaArt provides the perfect access point.