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What does an AI subscription cost over three years?

A PHNTM GUIDE · SOURCES AT THE END · SEPTEMBER 24, 2026

Monthly AI plans feel small, but they never stop. Here's the plain math over three years, before any price changes.

TOTAL PAID

$10 / month

$120 after one year · $240 after two · $360 after three

$20 / month

$240 after one year · $480 after two · $720 after three

$30 / month

$360 after one year · $720 after two · $1,080 after three

$50 / month

$600 after one year · $1,200 after two · $1,800 after three

PHNTM One

$799 hardware price; no required local subscription

When a one-time device comes out ahead

At $20 a month, a $799 device costs less from month 40. At $50 a month, from month 16. At $10 a month, the subscription stays cheaper over three years. Try your own number →

What the math doesn't say

Capability differs. Cloud subscriptions buy access to frontier models that are far stronger and faster than a 4B model on a Raspberry Pi. This is a cost comparison, not a like-for-like one.
Electricity isn't counted, and neither are price rises.
The case for PHNTM One is privacy and ownership. The savings are a bonus. If you need the smartest model every time, a subscription is the right call.

Questions

How much is $20 a month over three years?

$720. That is $79 less than a $799 PHNTM One over three years. At $20 a month, PHNTM One costs less from month 40.

Is a one-time AI device always cheaper?

No. At about $10 a month, a subscription stays cheaper over three years. And a subscription gets you a far more capable model.

keep exploring

Do the math

Three years of a subscription, next to one payment.

Ready when you are

Own your AI. Keep your words.

Order your PHNTM One. Every unit is built by hand and burned in for at least 24 hours before it ships. $799 once, with no required subscription for local use.

Order PHNTM One Why PHNTM One

$799 one-time · ships within 7–10 business days after payment · free US shipping · 30-day returns

Do the math

Compare the cost of ownership.

Compare $799 upfront with a monthly subscription over three years. These products differ in capability; this calculator compares spending only.

Over three years the subscription is $79 cheaper PHNTM One costs less from month 40 at $20/month.

Your monthly AI subscription

$20/ month

Total spent over 36 months: an AI subscription versus PHNTM One. Hover, or focus and use the arrow keys, to read any month.

See the numbers

Month	Subscription, total paid	PHNTM One, total paid

This compares cost, not capability. A 4B local model is capable, not a frontier model, and the big cloud models are smarter. You buy PHNTM One for privacy and ownership; the savings are a bonus. Electricity isn't counted. Boosted mode is optional; it uses your own Anthropic key, billed to you per use. Full comparison