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Yandex SmartCaptcha

Freemium#11 of 32 in CAPTCHA Software

Yandex SmartCaptcha: Adjustable bot checks with a 10,000-request monthly free allowance. Ranked #11 of 32 in CAPTCHA Software by our editors (7.9/10); pricing: Free plan; best for teams needing adjustable web and mobile risk checks.

7.9/10Editor score
Visit Yandex Cloud
Yandex SmartCaptcha7.9 Visit Yandex Cloud

At a glance

  • Editor score
    7.9 / 10
  • Pricing
    Free plan
  • Best for
    Teams needing adjustable web and mobile risk checks
  • Free plan
    Yes
  • CAPTCHA modes
    Risk-based
  • Founded
    2018
  • Facts checked
    22 Oct 2026

  • Where it wins

    • Uses machine learning and risk-based checks to vary verification.
    • Offers invisible, checkbox, slider, text, silhouette, and kaleidoscope challenges.
    • Supports JavaScript, REST validation, and Android and iOS WebViews.

  • Where it doesn't

    • Only 10,000 API requests per month are included in the free allowance.
    • Usage-based billing applies to correct validation requests beyond the free allowance.
    • Support is through documentation.

Our verdict on Yandex SmartCaptcha

Yandex SmartCaptcha is a cloud CAPTCHA and bot-protection service for websites and applications. It suits teams that want verification to respond to request risk rather than show every visitor the same challenge, including developers protecting web flows and mobile apps. Machine-learning analysis identifies automated requests; verification can begin with an invisible check or a checkbox or slider, with additional challenges for traffic that appears suspicious. The service also supports adjustable difficulty, traffic rules, and accessibility features.

Integration is developer-oriented: a JavaScript widget uses client and server keys, and an API validates tokens. For mobile apps, SmartCaptcha supports Android WebView and iOS WKWebView integration, as well as Flutter Android WebView. The available integration options make it relevant when a team needs CAPTCHA across both web and mobile experiences, but implementation involves adding the widget or WebView component and handling token validation. Teams looking for a self-contained, non-developer setup may prefer a product designed around that approach.

The free allowance includes 10,000 SmartCaptcha API requests each month. Beyond that, the published plans describe usage-based billing for correct validation requests, with a lower example rate for requests above 100,000. That structure can suit teams starting within the included allowance or with variable request volumes, while teams with steady higher traffic should assess the usage-based charges for their billing entity and region. Support is provided through documentation. Choose SmartCaptcha for configurable risk checks and web/mobile integration; consider alternatives if you need a different support channel or prefer simpler implementation.

Your product? Our editors can test Yandex SmartCaptcha in depth and publish a review, labelled as paid · from $149/mo →

Yandex SmartCaptcha pricing

Plans Free planFreemium A usable free plan; paid tiers unlock the limits above. Prices checked 22 Oct 2026.
See plans on yandex.cloud

All 3 Yandex SmartCaptcha plans and prices →

Yandex SmartCaptcha fact sheet

Free planYes
Paid fromNot verified
CAPTCHA modesRisk-based
Audio challengeYes
Accessibility optionsYes
Monthly verifications10000 /mo
SDK platformsBoth
Privacy controlsYes
DeploymentCloud, Mobile
PlatformsWeb, iOS, Android
Compliance & securityPCI DSS
SupportDocs
Built forSmall business, Mid-market, Enterprise (editorial estimate)
Integrations5 integrations: JavaScript widget, REST validation API, Android WebView, iOS WKWebView, Flutter Android WebView
PricingFree plan (source)
Websiteyandex.cloud
Facts checked22 Oct 2026

Yandex SmartCaptcha integrations

Yandex SmartCaptcha lists 5 integrations on its own site.

  • JavaScript widget
  • REST validation API
  • Android WebView
  • iOS WKWebView
  • Flutter Android WebView

Alternatives to Yandex SmartCaptcha

See all Yandex SmartCaptcha alternatives →

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Featured on iTechGuides

Featured on iTechGuides — Yandex SmartCaptcha 7.9/10

Yandex SmartCaptcha is listed in our CAPTCHA Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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