reCAPTCHA alternative: Antisy or Google reCAPTCHA, by the documentation of each

Looking for a reCAPTCHA alternative? Antisy and reCAPTCHA both verify, from your server, a token sent with the form. They differ in the company that operates the service, in what the visitor sees and in the state of the offer: reCAPTCHA is available today; Antisy is on a waiting list.

As of 27 October 2026.

The table: Antisy and Google reCAPTCHA

Antisy and Google reCAPTCHA, point by point
Criterion	Antisy	Google reCAPTCHA
Company and legal framework	Antisy Sàrl, a Swiss company entered in the Geneva commercial register. The API and the dashboard (in French) are hosted at Infomaniak, in Geneva, and have been in service since 27 October 2026.	Google. The documentation says that reCAPTCHA is part of Google Cloud Fraud Defense. Since 2 April 2026, according to the FAQ, the customers of Fraud Defense are the sole controllers of customer data, and Google processes it only under the Google Cloud terms and its data processing addendum. [1]
What the visitor sees	Nothing: no checkbox and no puzzle. The visitor’s browser only does a short computation in the background.	It depends on the type of key. The documentation says that score-based keys work without asking the user to solve a CAPTCHA, and that v3 never interrupts users. The v2 keys are a checkbox or an invisible version. [3] [5] [6]
Cookies and storage	Neither the verification script nor the API sets a cookie, and the script writes nothing to the browser’s storage. The data the script measures and the data the server reads are listed, with their retention periods, on the home page and in the frequently asked questions.	A necessary cookie, `_GRECAPTCHA`, is set on execution for risk analysis. The default domain, `www.google.com`, may set others; `www.recaptcha.net` can be used instead. [1]
Integration	A `<script>` tag in the page; on submission, the script puts a short token in the hidden field `antisy-token`; your server sends it to `POST /v1/siteverify` with its secret and reads `allow` or `deny`.	A script loaded from `www.google.com/recaptcha/`; the token arrives in the parameter `g-recaptcha-response`. The server verifies it with `POST https://www.google.com/recaptcha/api/siteverify` (`secret`, `response`); a v3 token expires after two minutes. The Enterprise version goes through an assessment, `POST https://recaptchaenterprise.googleapis.com/v1/projects/PROJECT_ID/assessments`, whose response carries a score and reasons. [4] [6] [7] [8]
Public prices	Free: CHF 0, 2,500 checks per month and 1 site, no credit card. Standard, Pro and Enterprise: on quote. Access is by waiting list; nothing is paid online.	10,000 free assessments per month and per organisation. With billing enabled: from 10,001 to 100,000 assessments per month, a flat fee of $8; beyond that, $0.001 per assessment ($1 per 1,000). [2]

Company and legal framework

Antisy

Antisy Sàrl, a Swiss company entered in the Geneva commercial register. The API and the dashboard (in French) are hosted at Infomaniak, in Geneva, and have been in service since 27 October 2026.

Google reCAPTCHA

Google. The documentation says that reCAPTCHA is part of Google Cloud Fraud Defense. Since 2 April 2026, according to the FAQ, the customers of Fraud Defense are the sole controllers of customer data, and Google processes it only under the Google Cloud terms and its data processing addendum. [1]

What the visitor sees

Antisy

Nothing: no checkbox and no puzzle. The visitor’s browser only does a short computation in the background.

Google reCAPTCHA

It depends on the type of key. The documentation says that score-based keys work without asking the user to solve a CAPTCHA, and that v3 never interrupts users. The v2 keys are a checkbox or an invisible version. [3] [5] [6]

Cookies and storage

Antisy

Neither the verification script nor the API sets a cookie, and the script writes nothing to the browser’s storage. The data the script measures and the data the server reads are listed, with their retention periods, on the home page and in the frequently asked questions.

Google reCAPTCHA

A necessary cookie, _GRECAPTCHA, is set on execution for risk analysis. The default domain, www.google.com, may set others; www.recaptcha.net can be used instead. [1]

Integration

Antisy

A <script> tag in the page; on submission, the script puts a short token in the hidden field antisy-token; your server sends it to POST /v1/siteverify with its secret and reads allow or deny.

Google reCAPTCHA

A script loaded from www.google.com/recaptcha/; the token arrives in the parameter g-recaptcha-response. The server verifies it with POST https://www.google.com/recaptcha/api/siteverify (secret, response); a v3 token expires after two minutes. The Enterprise version goes through an assessment, POST https://recaptchaenterprise.googleapis.com/v1/projects/PROJECT_ID/assessments, whose response carries a score and reasons. [4] [6] [7] [8]

Public prices

Antisy

Free: CHF 0, 2,500 checks per month and 1 site, no credit card. Standard, Pro and Enterprise: on quote. Access is by waiting list; nothing is paid online.

Google reCAPTCHA

10,000 free assessments per month and per organisation. With billing enabled: from 10,001 to 100,000 assessments per month, a flat fee of $8; beyond that, $0.001 per assessment ($1 per 1,000). [2]

This table compares neither detection rates nor speed: Antisy publishes none. The facts about Google reCAPTCHA come from its official documentation, read on 27 October 2026; the numbers refer to the sources, at the bottom of the page.

Where does Antisy stand?

Access is by waiting list. The API and the dashboard (in French) have been in service since 27 October 2026, hosted at Infomaniak in Geneva; no customer is in production yet.

See also: The pilot · Join the waiting list

Looking for a reCAPTCHA alternative? When to choose one or the other

Choose Google reCAPTCHA if…

you want a service available today, with a published free tier (10,000 assessments per month) and complete documentation;
your application already runs on Google Cloud and you want to manage the protection in the same place;
you want a score and reasons in the verification response: the reCAPTCHA Enterprise assessment returns them, whereas the response of Antisy has only two outcomes, allow or deny, and never gives the reason.

Choose Antisy if…

you want the visitor to see neither a checkbox nor a puzzle;
you want a contract with a Swiss company and an API operated in Geneva, at Infomaniak;
you want a verification script that sets no cookie;
you accept going through the waiting list: access is not open yet and no customer is in production.

Frequently asked questions

Does Antisy do the same thing as reCAPTCHA?

Both sit on a form or a login and give your server what it needs to decide. reCAPTCHA offers several types of key (score, checkbox, invisible) and, in Enterprise, an assessment with a score and reasons. Antisy returns a verdict with two outcomes, allow or deny, with no reason, and never shows the visitor anything.

These pages do not compare effectiveness: Antisy announces no detection rate.

Where is the data processed with each one?

For Antisy, the API and its database are hosted at Infomaniak, in Geneva, in service since 27 October 2026. For reCAPTCHA, the FAQ of Google states that since 2 April 2026, the customers are the sole controllers of customer data and that Google processes it only under the Google Cloud terms and its data processing addendum.

Which one is free?

reCAPTCHA: 10,000 free assessments per month and per organisation. Antisy: the Free tier, 2,500 checks per month for 1 site, no credit card; it is not open yet, access is by waiting list.

Can Antisy be used today?

Access is by waiting list. The API and the dashboard (in French) have been in service since 27 October 2026, hosted at Infomaniak in Geneva; no customer is in production yet. A pilot is planned; it has not started.

Sources

Official pages of Google reCAPTCHA, read on 27 October 2026.

Google Cloud Fraud Defense: reCAPTCHA frequently asked questions: https://docs.cloud.google.com/recaptcha/docs/faq
Google Cloud Fraud Defense: reCAPTCHA billing information (updated on 22 October 2026): https://docs.cloud.google.com/recaptcha/docs/billing-information
Google Cloud Fraud Defense: install score-based keys on a website: https://docs.cloud.google.com/recaptcha/docs/instrument-web-pages
Google Cloud Fraud Defense: create an assessment for a website: https://docs.cloud.google.com/recaptcha/docs/create-assessment-website
reCAPTCHA: introduction (v3, v2 checkbox and invisible): https://developers.google.com/recaptcha/intro
reCAPTCHA v3: documentation: https://developers.google.com/recaptcha/docs/v3
reCAPTCHA v2: display the widget: https://developers.google.com/recaptcha/docs/display
reCAPTCHA: verify the user’s response: https://developers.google.com/recaptcha/docs/verify