5arz vs reCAPTCHA

5 min readSources checked 2 Oct 2026Sources at the end

Looking for a reCAPTCHA alternative? First check which question you need answered: “is this a bot?” or “did a real person do this?”

Man on a park bench answering a short survey on his phoneAI-generated image
Likely human, or proven person?Two different questions
Short answer

reCAPTCHA scores how likely a visit is a bot. 5arz proves a specific verified person did a specific thing.

Different jobs, and they work well together.

How each one works

5arzID and liveness once, then a seal per action
Google reCAPTCHASilent signals, then a 0.0–1.0 score

Side by side

Feature5arzreCAPTCHA
The questionDid a verified person do this?How likely is this a bot?
What’s checkedA government ID plus liveness, once, through a partnerSignals its JavaScript or mobile SDK collects on your page
What you getA signed seal: who, what and whenA score from 0.0 to 1.0, plus reason codes
User frictionA one-time ID and selfie check on their phonev3 never interrupts users; v2 shows a checkbox, sometimes a challenge
Proof others can checkYes — anyone verifies the signature offline, freeNo — a verdict for your own backend
Price to startFree: 1,000 seals a month. Checking a seal is always free.Free up to 10,000 assessments a month, then $8 flat to 100,000
PrivacySelfie and ID go to our partner. We keep only a signed result.Sets a _GRECAPTCHA cookie; sites must show Google’s privacy terms

reCAPTCHA details are from Google’s own documentation — see Sources 1–6.

Which one you need

Choose reCAPTCHA when…
  • You want low-friction bot filtering on every visit
  • Sign-ups, logins, forms and checkout at scale
  • A likelihood is enough — no proof needed later
Choose 5arz when…
  • You need proof a verified person did the action
  • Someone else must check that proof later
  • An AI agent acts on a person’s behalf

Or use both. Score every visit with reCAPTCHA. Ask for a 5arz seal only where a person must stand behind the action.

Questions

Is 5arz a reCAPTCHA replacement?

Not for everyday bot filtering — reCAPTCHA is cheaper and invisible for that. 5arz is for actions that need proof of a verified person.

Can I use both?

Yes. Keep reCAPTCHA on forms and logins. Add a 5arz seal where a real, verified person must stand behind the action.

What does reCAPTCHA v3 return?

A score: 1.0 is very likely a good interaction, 0.0 very likely a bot. Google suggests 0.5 as a default threshold.

Is reCAPTCHA now Google Cloud Fraud Defense?

reCAPTCHA is part of Google Cloud Fraud Defense. Google says existing site keys keep working with no migration.

Does a 5arz seal stop duplicate accounts?

Not by itself. A seal says a verified person is behind it. Check the sybil_checked claim before one-per-person actions.

Does 5arz store biometrics?

No. Your selfie and ID go to our verification partner, Stripe Identity or Didit. We keep only a signed result.

Sources

Read on 2 Oct 2026. Features and prices can change — check the source.

  1. 1How reCAPTCHA worksGoogle Cloud docs
  2. 2reCAPTCHA v3Google for Developers
  3. 3Choosing a reCAPTCHA typeGoogle for Developers
  4. 4Compare tiers and pricingGoogle Cloud docs
  5. 5reCAPTCHA FAQGoogle for Developers
  6. 6Google Cloud Fraud Defensecloud.google.com
  7. 75arz public key5arz-oracle-2 · ES256
  8. 8Verify a sealCheck one in your browser

“reCAPTCHA” and “Google” are trademarks of Google LLC. 5arz is independent and is not affiliated with, sponsored by, or endorsed by Google. This page is informational and not legal advice.

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