ChatBelt
One prompt, four minds

Send a single prompt to ChatGPT, Claude, Gemini & Grok. Compare responses side-by-side. Pick the best answer.

Try It Free See Features
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OpenAI
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Google
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Live Demo
```
I want to wash my car. The car wash is 50 meters away. Should I walk or drive?
◯
ChatGPT 5.2
Thought for 5 seconds
✦
Claude Opus 4.6
Thinking about weighing transport…
✧
Gemini 2.5 Pro
𝕏
Grok 3
```
Features
Everything you need to compare AI

Stop switching tabs. Get all your answers in one place.

⚡
One-Click Compare
Send a single prompt to 4 models simultaneously. No copy-pasting between tabs.
⇄
Cross-Model Follow-ups
Share one model's answer with another. Ask Claude what it thinks about GPT's response.
★
Rate & Track
Thumbs up/down each response. Track which model wins most for your use cases.
⚙
Model Toggle
Enable or disable specific models per query. Compare just 2 or all 4.
🔒
Your API Keys
Bring your own keys. We never store your prompts or responses on our servers.
📱
Mobile-First
Swipeable cards on mobile, side-by-side grid on desktop. Works everywhere.
How It Works
Three steps. Four answers.

It's as simple as sending a message.

1

Type your prompt

Write one question, just like any chat app.

2

Hit Send All

Your prompt goes to all 4 models at once.

3

Compare & follow up

Read responses, rate them, and dig deeper with cross-model follow-ups.

Pricing
Start free, scale when ready

No credit card required. Upgrade anytime.

Free
$0/mo
Perfect for trying out ChatBelt
  • 10 comparisons / day
  • All 4 models
  • Basic follow-ups
Get Started
Popular
Pro
$19/mo
For daily AI power users
  • Unlimited comparisons
  • Cross-model follow-ups
  • Response history
  • Priority speed
Start Free Trial
Team
$49/mo
For teams that need the best answer
  • Everything in Pro
  • 5 team members
  • Shared workspace
  • BYO API keys
Contact Sales
FAQ
Questions? Answered.

How does ChatBelt work?

▾
ChatBelt sends your prompt to multiple AI models simultaneously via their APIs. You see all responses side-by-side so you can compare quality, tone, and accuracy instantly.

Do you store my conversations?

▾
No. Your prompts and responses pass through our servers only to route them to each model. We don't log or store any conversation data. With BYO keys, data goes directly to each provider.

Which models are supported?

▾
Currently ChatGPT (GPT-5.2), Claude (Opus 4.6), Gemini (2.5 Pro), and Grok 3. We're adding more models regularly based on user demand.

Can I use my own API keys?

▾
Yes! On the Team plan, you can bring your own API keys for each provider. This gives you full control over costs and data privacy.