Pricing
The core tool is free. No account required. Pay for the artifact, not the calculation.
No account. No credit card. Always free.
- ✓7 architecture presets
- ✓6 models across 4 providers (GPT-4o, GPT-4o-mini, Claude Sonnet 4.6, Claude Haiku 4.5, Gemini 2.5 Flash, DeepSeek V3.2)
- ✓Naive / Realistic / Worst Case cost columns
- ✓Retry, caching, batch, and infra overhead multipliers
- ✓1× / 3× / 10× growth scenarios
- ✓Model recommendation with reasoning
- ✓Shareable URL — recipient can adjust and reshare
- ✓Client-side tokenizer (paste your prompt, count stays local)
- ✓Assumptions panel with full multiplier breakdown
or $16/mo billed annually ($192/yr)
- ✓Everything in Free
- ✓Extended model catalog — Mistral, Cohere, AWS Bedrock, Azure OpenAI, Together AI, Groq
- ✓Input token breakdown by layer — system prompt / RAG context / history / user input
- ✓Cost per MAU — $/user/month output
- ✓Global retry budget + worst-case cascade failure modeling
- ✓PDF export — board-quality layout with assumptions and recommendation
- ✓CSV export — all models, all columns, metadata
- ✓Slack share — post summary card to a channel
Need one PDF for a proposal or board deck? Pay once, no subscription.
- –PDF export — immediate download
- –CSV export — immediate download
- –24-hour session window, no account required
- –One-time payment via Paddle
FAQ
Does the free tier ever go away?
No. The core cost modeling tool — all 7 presets, all multipliers, all three cost columns, and the share link — is permanently free and requires no account.
Who handles payments?
Paddle is our merchant of record. They process payments and handle VAT, GST, and sales tax globally — you’ll see Paddle on your bank statement. We never see your card details.
Can I cancel anytime?
Yes. Cancel from your account settings at any time. Your Pro access continues until the end of the current billing period. See our Refund Policy for details on refunds.
What’s the difference between the Export Pass and Pro?
The Export Pass ($5, one-time) unlocks PDF and CSV export for 24 hours — no account, no subscription. Pro ($20/mo) unlocks everything: the extended model catalog, input token breakdown, cost per MAU, retry budget analysis, Slack share, and exports on an ongoing basis.
Is my prompt text or architecture model stored anywhere?
No. All cost calculations run in your browser. If you use the tokenizer’s paste mode, your prompt text never leaves your device — tiktoken runs locally via WebAssembly. See our Privacy Policy for the full picture.