Short version: the calculator runs in your browser, we don't want your personal data, and we don't collect it. There are no accounts, and no cookies unless you switch them on: Google Analytics and the X pixel we use to measure our ads both stay off until you allow them.
What stays on your device
Picking your computer and seeing which models fit is computed entirely in your browser. The hardware you select, the models you look at, and the speeds we estimate are never sent to a server — there's no backend involved in the core calculator. Theone exception is opt-in: if you allow Google Analytics or the X pixel, they see the address of each page you view, and the calculator keeps the machine you picked in that address.
The few things that do reach a server
- Checking a custom model. When you paste a Hugging Face repo to check a model that isn't in our list, we send that repo name to our server so it can fetch the model's public specs from Hugging Face. We don't store it.
- Crowdsourced benchmarks (the Contribute form). If you choose to submit a measured speed, we store what you selected (device, model, quantization, context length), the tokens/sec we parsed, a short excerpt of the benchmark output you pasted, and a one-way hashed form of your IP address. The hash is used only to rate-limit and de-duplicate submissions — it can't be reversed to identify you, and we never store your raw IP, name, or email. Submitting is entirely optional.
- Aggregate analytics. We use Vercel's privacy-friendly, cookieless analytics to count page views and measure page-load performance — it needs no consent and no banner. We also offer Google Analytics, but it is strictly opt-in: it sets first-party cookies (such as
_ga), so it does not load at all unless you allow it via the consent banner. See Google's cookie documentation for what those cookies do. We don't use either analytics tool for advertising. You can change your choice any time below. With that consent, GA also counts deliberate calculator use and results, setup-guide clicks, and buy or rental link clicks using fixed tool, placement and provider categories. These events omit your hardware specs, exact model, entered values and outbound referral URL. A link click does not confirm a purchase, rental, signup or commission. - Ad measurement (the X pixel). We advertise on X (formerly Twitter). If you allow it, X's pixel loads and tells X when someone who saw or clicked one of our ads reaches the site, so we can tell which ads work. We may also use it to show our ads on X to people who have visited. It sets cookies, including X's own, and X can link the visit to your X account if you have one — see X's privacy policy. It is strictly opt-in, separate from Google Analytics, and you can change it below.
Affiliate links
Some outbound links to hardware and cloud GPU providers are affiliate links: if you buy or sign up through them, we may earn a small commission at no cost to you. As an Amazon Associate, we earn from qualifying purchases. These links carry only a referral code — no personal data about you — and they never change which models or machines we show, or how we rank them.
Terms of use
The estimates here are best-effort approximations derived from device specs and model architectures, not guarantees. Real-world performance depends on your exact hardware, drivers, runtime, settings, and the specific model build, and can differ from what we show. The site is provided as-is, without warranty of any kind; use it to inform decisions, not as the sole basis for a purchase. See the methodology for how the numbers are produced and where they're weakest.