Calculate exact costs before running expensive prompts
Paste your prompt template, fill in variables, and instantly see token counts and cost estimates across OpenAI, Anthropic, and other AI models — before you spend a cent.
Start for $12/moNo surprise bills. Cancel anytime.
Accurate Tokenization
Uses model-specific tokenizers so counts match what providers actually charge.
Real-Time Estimates
Costs update instantly as you type — no waiting, no guessing.
Multi-Model Comparison
Compare GPT-4o, Claude 3.5, Gemini, and more side by side.
Simple Pricing
Pro
$12
/month
- ✓Unlimited prompt templates
- ✓All supported AI models
- ✓Variable substitution engine
- ✓Usage history & tracking
- ✓Export cost reports
- ✓Priority support
FAQ
Which AI models are supported?
We support OpenAI (GPT-4o, GPT-4, GPT-3.5), Anthropic (Claude 3.5 Sonnet, Claude 3 Opus/Haiku), Google Gemini, and Mistral — with more added regularly.
How accurate are the token counts?
We use the same tokenization libraries that each provider uses internally, so estimates match actual billing within 1–2 tokens in most cases.
Can I cancel anytime?
Yes. Cancel from your account dashboard at any time. You keep access until the end of your billing period with no questions asked.