AI tools
Free, no sign-up, nothing you paste leaves your browser. Each tool answers one question and shows the formula and the official numbers behind it.
How many tokens is my prompt?
Token counter
Paste any text or a file and see it split the way a model reads it.
Count my tokensHow long is a 4,000-token answer?
Words to tokens
Convert words, pages or characters into tokens, and back.
ConvertWhat will 10,000 chats a month cost?
API cost calculator
Your workload priced on each model, from the providers' own price pages.
Estimate my billIs a monthly AI plan cheaper than paying per use?
Subscription or API?
Enter how you use AI and see where a plan pays off.
Compare for my usageWill my whole document fit?
Context window checker
Check a document, codebase or chat against each model's window.
Check a documentCan my GPU run this model?
VRAM calculator
Memory needed by model size and quantization, and a speed estimate.
Check my GPUWhat these tools are for
Every AI answer is paid for in tokens, and every model has a limit on how many it can read at once. These tools turn that into answers you can act on: what a prompt costs, whether a document fits, whether a monthly plan beats paying per use, and whether a model runs on your own GPU.
Where the numbers come from
Prices, context windows and plan prices are read from each provider’s own pricing and documentation pages, and every tool page lists them with a link and the date they were checked. Model shapes come from the official model files on Hugging Face, GPU memory and bandwidth from the makers’ spec pages. When a provider does not publish a number, the tools say so instead of guessing.
Privacy
The tools run in your browser. Text you paste and files you open are not sent to us or to anyone else.