CustomGPT vs Gemini 3
A detailed comparison to help you choose the right AI tool for your needs.
Our Pick
Gemini 3 Pro
Gemini 3 Pro edges out CustomGPT with superior overall performance and features that make it the better choice for most users.
Try Gemini 3Feature Comparison
Feature
CustomGPT
Gemini 3
Ratings
Overall Rating
4.4
4.8
Coding
-
4.7
Writing
4.0
4.5
Reasoning
4.0
4.8
Speed
4.5
4.7
Value
4.3
5.0
Pricing
Monthly Price
$49
$20
Free Tier
Input (per 1M tokens)
-
$1.25
Output (per 1M tokens)
-
$5
Features
Context Window
100K
1049K
Vision/Images
Audio
Video
Code Generation
AI Agents
CustomGPT
Pros
- No-code chatbot builder
- Train on your own data
- Great for customer service
- Easy to deploy on websites
- MIT case study validation
Cons
- Not for coding tasks
- Limited customization vs building from scratch
- Pricing can add up with usage
Gemini 3 Pro
Pros
- Best value - cheapest premium model
- Massive 1M+ token context
- First model to hit 1500 Elo
- True multimodal (video, audio, text, images)
- Excellent for large codebases
Cons
- Writing style less polished than Claude
- Google ecosystem integration can be limiting
- Deep Think mode limited to Ultra subscribers
Choose CustomGPT if you need:
Business chatbots, customer service, knowledge bases
Choose Gemini 3 if you need:
Large projects, budget-conscious users, multimodal tasks
Ready to get started?
Both tools offer free tiers or trials. Try them out and see which one works best for your workflow.