Free local AI ownership tools
Local AI Cost Calculator: Hardware vs Cloud
Which local AI computer costs less to own—and when is it better to pay monthly?
Two calculators, one useful answer: compare two complete local computers over the same ownership period, or compare buying local hardware with a recurring cloud AI bill. Both show active/idle electricity, maintenance and end-of-term resale when relevant. No account, fake benchmark, or invented price.
Unsure what hardware can actually run your AI tasks? Start with the model-fit guide. Costs only matter after checking model support and real performance.
Option A · Hardware ownership
Which local AI computer costs less to own?
Compare two complete, usable setups: a mini PC against a GPU upgrade, a Mac against a desktop, or any two real quotes. Include power both while working and while idling, maintenance, optional software costs, and final resale.
No signup or downloads. No vendor prices or benchmarks are preloaded. This is a cash-outlay comparison, not a promise that the two machines run the same models.
Without JavaScript: Add each setup's complete additional purchase cost, yearly maintenance and monthly local fees. If known, annual electricity equals (active watts × active hours/day + idle watts × other powered-on hours/day) ÷ 1,000 × 365 × your actual delivered kWh rate. Multiply yearly costs by ownership years, then deduct resale only at the end.
Worked example: A $750 mini PC and $450 desktop upgrade may have very different power and upkeep. Paying less on day one does not guarantee a lower three-year cost. Check your GPU, memory, model/software support, and used-item condition independently.
Option B · Own vs. subscribe
Own your AI or pay monthly?
Start with the monthly AI bill you would actually replace. Enter a complete hardware quote, not just a GPU price. See the cost over time and when—if ever—the purchase pays for itself.
No account or registration required. The cost inputs and calculations stay in your browser, are not sent or saved, and are not collected by site analytics. The site separately uses privacy-focused pageview analytics.
Works without JavaScript: Annual electricity = (active watts × active hours/day + idle watts × other powered-on hours/day) ÷ 1,000 × 365 × your electricity rate. Compare the hardware cost plus power, maintenance and other local fees with the total subscription bill over the same months. Resale occurs only at the end.
Illustration, not an offer: $1,600 hardware vs $40/month is $1,440 in subscription fees over three years before counting power. That purchase does not save money on those inputs, even before maintenance.
Only have two purchase prices? Use our original quick comparison
This simpler calculation excludes repairs, resale, monthly software fees and separate idle/active power. Use Option A above for full ownership costs.
Start with two prices
Add up what you still need to buy for each option, including tax and delivery. Use the same currency for both.
The interactive calculator needs JavaScript to load. You can still use the formula below and the complete-cost checklist.
Ready to compare the actual hardware?
A lower cost helps only if the setup runs your chosen model and software. Check memory, backend support, the exact configuration and return terms before ordering.
Compare other local-AI hardware · Estimate model memory first
How the calculation works
Option A (two local computers): for each setup, total = complete purchase cost + maintenance × years + other monthly fees × months + electricity × years − resale credited only at the end. Compare using the same workload, schedule, delivered electricity rate and selected horizon, with active and idle wall watts entered separately for both systems. The tool identifies if a higher-priced computer catches up on operating costs before resale. All estimates are entered by readers, not verified offers or measured benchmarks. If power is switched off, electricity is excluded, not assumed free.
Local total = additional hardware cost + annual electricity and maintenance × ownership years + other monthly local fees × months − estimated resale at the end. Cloud total = the monthly bill you would actually pay × months. These are planning inputs, not current product quotes, matched-model tests or promised savings.
Annual electricity = ((whole-system active watts × active hours) + (whole-system idle watts × remaining powered-on hours)) ÷ 1,000 × 365 × your delivered electricity rate per kWh. The device is assumed off outside powered-on hours. Break-even is the first month when cumulative cloud payments equal or exceed purchase-plus-running costs, without counting a resale before the selected end date.
For a quick purchase-only answer, expand the original two-hardware comparison. It compares two complete prices with optional single average watts per setup but excludes maintenance, software and resale. It remains available to preserve familiar behavior and links.
Your prices, hours and watts stay in your browser. Changing the displayed currency does not convert prices. Neither calculator collects emails or promises that a local model performs like a paid hosted AI service.
For a compatible desktop you already own, count only the new card and required upgrades. If you need the desktop too, include every required component or the complete base system, without counting parts twice. Include tax, delivery and missing peripherals once.
Both A and B support whole-system active/idle watts, maintenance, local software costs and a conservative resale assumption. Our original quick comparison below them is deliberately narrower. All exclude financing, opportunity cost and unexpected repairs unless you deliberately include allowances. An already-owned device is counted as zero additional purchase outlay only if it is suitable; this is not an appraisal of its resale opportunity cost. No calculation proves model equivalence or benchmark performance.
Use the EIA's explanation of delivered electricity prices when choosing a sensible rate. State averages are not your utility bill; confirm the amount actually charged for the extra electricity you consume.