SI or Not pricing Free every month, Pro and Max for heavy users

Check images, videos, music and texts for SI (AI). Your first 3 checks need no account, a free account gives you 10 credits and 50 text checks every month, and paid plans scale up from there.

Free

£0 forever

No credit card

  • 10 credits a month (10 images or 2 videos)
  • 50 text checks a month
  • Clues, metadata and share links
  • Add credit packs anytime

Sign up free

Pro Most popular

£4 / month

£40 / year

or £40 a year, 2 months free

£3.333 a month, 2 months free

  • 250 credits a month
  • Unlimited text checks
  • 30-day history of your analyses
  • Share links kept 30 days
  • Everything in Free

Cancel anytime, no commitment

Max

£16 / month

£160 / year

or £160 a year, 2 months free

£13.333 a month, 2 months free

  • 1,500 credits a month
  • Unlimited text checks
  • Video priority
  • API access Coming soon
  • Everything in Pro

Cancel anytime, no commitment

No commitment: cancel anytime in 2 clicks from your account, you keep your plan until the end of the period. Secure payment by Stripe. Prices in pounds sterling. Subscription terms

Credit packs

No subscription. Pack credits never expire and are used after your monthly credits run out, on any plan.

100 credits

100 images or 20 videos · £0.035 per credit

£3.50

Buy 100 credits

500 credits

500 images or 100 videos · £0.026 per credit

£13

Buy 500 credits

How credits work

Image or song = 1 creditPixels, EXIF, C2PA and XMP for an image; the Suno and Udio fingerprint for a song.

Video = 5 creditsSeveral frames plus the file metadata are analysed.

Text uses no credits50 a month on Free, unlimited on Pro and Max.

Monthly credits resetEvery month on your signup or subscription date. Pack credits never expire.

Without an account: 3 checks (image, text, video or music) every 30 days. The example images and texts on the detectors never count.

Pricing FAQ

Do I need an account to use SI or Not?

No. Your first 3 checks (image, text, video or music) need no account. After that, a free account gives you 10 credits and 50 text checks every month, with no credit card. The example images and texts on the detectors are always free.

How do credits work?

An image or music check uses 1 credit and a video check uses 5 credits, because a video is analysed frame by frame. Text checks never use credits: the free plan includes 50 text checks a month and they are unlimited on Pro and Max.

When do my monthly credits reset?

Every month on the day you signed up, or the day you started a paid plan (UTC). Upgrading starts a fresh cycle with the full allowance. Unused monthly credits do not carry over; pack credits never expire.

What are credit packs?

Packs add credits without a subscription: 100 credits for £3.50 or 500 credits for £13. Pack credits never expire and are only used once your monthly credits for the month are gone. They work with every plan, including Free.

What is the difference between Pro and Max?

Pro gives you 250 credits a month, unlimited text checks and a 30-day history of your analyses. Max gives you 1,500 credits a month, everything in Pro, priority for video analyses and API access when it launches.

How much do I save with yearly billing?

Two months. Pro costs £4 a month or £40 a year, and Max costs £16 a month or £160 a year. Credits are given every month in both cases.

How do I pay and cancel?

Payments are handled by Stripe: we never see or store your card number. A subscription renews automatically until you cancel it from your account page (Manage subscription); the cancellation takes effect at the end of the period you already paid for. Credit packs are a one-time payment.

Which currency will I pay in?

Prices are shown in US dollars, euros or pounds sterling depending on where you are, and you can switch with the currency selector above the plans. Once you have a subscription, your account stays in the same currency.

Is the free plan really free?

Yes. No credit card is asked at sign-up and the free plan has no time limit. You can delete your account at any time from your account page.

Subscription and payment terms