Predict AI Prompt Costs
Before You Run Them
Instantly estimate token counts and API costs across OpenAI, Anthropic, and more. Stop overspending on LLM calls — know your costs upfront.
Start Predicting – $14/moCancel anytime. No hidden fees.
Instant Estimates
Token counts calculated client-side in milliseconds using tiktoken.
Multi-Model Pricing
Compare costs across GPT-4o, Claude 3.5, Gemini, and more side by side.
Prompt Dashboard
Save prompts, track spending history, and optimize your LLM budget.
Simple Pricing
Pro
$14
per month
- ✓ Unlimited prompt analyses
- ✓ All models: OpenAI, Anthropic, Gemini
- ✓ Saved prompt dashboard
- ✓ Cost history & export
- ✓ Priority support
FAQ
How accurate are the token estimates?
We use the same tiktoken library that OpenAI uses internally, so estimates are highly accurate — typically within 1–2 tokens of the actual API call.
Which AI models are supported?
GPT-4o, GPT-4 Turbo, GPT-3.5 Turbo, Claude 3.5 Sonnet, Claude 3 Opus, Gemini 1.5 Pro, and more. We update pricing whenever providers change their rates.
Can I cancel my subscription anytime?
Yes. Cancel with one click from your billing portal. You keep access until the end of your billing period with no questions asked.