The Simple Answer
Gemini 3 Pro
A multimodal reasoning model that understands and generates across text, images, code, audio, and video.
Think: The Brain
Veo 3.1
A specialised text-to-video generation model that creates high-quality videos with audio from text descriptions.
Think: The Video Studio
Key Distinction: Veo 3.1 and Gemini 3 Pro are separate, distinct AI models developed by Google for different purposes. They are not versions of each other — they are complementary tools in the same ecosystem.
What Is Gemini 3 Pro?
Gemini 3 Pro is Google's advanced multimodal AI model designed for reasoning, understanding, and generation across multiple types of content simultaneously.
Primary Capabilities
- Multimodal understanding: Natively processes text, images, audio, video, and code together
- Advanced reasoning: Handles complex problem-solving and multi-step logic
- Code generation: Writes sophisticated programmes and explains technical concepts
- Image generation: Creates images from text descriptions (via image generation endpoints)
- Content creation: Generates written content, analyses documents, answers questions
What Gemini 3 Pro Does Best
- Complex reasoning and problem-solving
- Website building and code architecture
- Image generation and visual content creation
- Understanding and analysing existing content
- Multi-step task planning and execution
What Is Veo 3.1?
Veo 3.1 is Google's specialised text-to-video generation model, focused exclusively on creating high-quality video content from text descriptions.
Primary Capabilities
- Video generation: Creates videos up to 1080p from text prompts
- Audio integration: Generates synchronised audio, dialogue, and environmental sounds
- Motion understanding: Produces realistic movement and physics
- Scene composition: Creates well-composed shots with appropriate lighting
- Style control: Interprets style descriptions (cinematic, documentary, animated, etc.)
What Veo 3.1 Does Best
- Creating marketing videos from text descriptions
- Generating social media video content
- Producing product demonstration videos
- Creating website background videos and hero sections
- Making educational or explainer videos
Head-to-Head Comparison
| Aspect | Gemini 3 Pro | Veo 3.1 |
|---|---|---|
| Model Type | Multimodal LLM | Video Generation |
| Primary Purpose | Reasoning and understanding | Video creation |
| Input Types | Text, images, audio, video, code | Text prompts |
| Output Types | Text, code, images, analysis | Video with audio |
| Can Generate Video? | No (but can understand video) | Yes |
| Can Write Code? | Yes | No |
| Can Generate Images? | Yes | No (only video) |
| Context Window | 64K tokens | N/A (prompt-based) |
| Tokens in ChilledSites | Variable / 4,500 (images) | 6,000–8,000 |
How They Work Together
While Gemini 3 Pro and Veo 3.1 are separate models, they're part of the same Google AI ecosystem and are both accessible through the Gemini API. They complement each other naturally:
Example Workflow: Creating a Marketing Website
- Use Gemini 3 Pro to build the website structure, write code, and create the layout
- Use Gemini 3 Pro to write marketing copy and product descriptions
- Use Gemini 3 Pro to generate static images for graphics and product shots
- Use Veo 3.1 to generate promotional videos, product demos, and hero backgrounds
- Result: complete website with code, copy, images, and videos — all AI-generated
In ChilledSites Studio
| Model | Token Cost | Purpose in ChilledSites |
|---|---|---|
| Gemini 3 Pro Preview | Variable | Website building and code |
| Gemini 3 Pro Image | 4,500 | Image generation |
| Veo 3.1 Fast | 6,000 | Fast video generation |
| Veo 3.1 | 8,000 | High-quality video with audio |
Common Misconceptions Clarified
Misconception: "Veo 3.1 is part of Gemini 3 Pro"
Reality: Veo 3.1 is a completely separate model. While both are Google AI models accessible through the Gemini API, they are distinct systems with different architectures and purposes.
Misconception: "Gemini 3 Pro can generate videos"
Reality: Gemini 3 Pro can understand video content but cannot generate videos. For video generation, you need Veo 3.1.
Misconception: "Veo 3.1 is better than Gemini 3 Pro"
Reality: They can't be compared as "better" or "worse" — they do different things. Veo 3.1 is better at video generation; Gemini 3 Pro is better at reasoning and code. Choose based on your specific need.
Misconception: "You can only use one or the other"
Reality: In platforms like ChilledSites Studio, you can use both models in the same project. Build with Gemini 3 Pro, enhance with Veo 3.1 videos — they work together beautifully.