Audience
Companies looking for a solution for verifying queries to identify user requests and block bots
About Yandex SmartCaptcha
The service identifies requests similar to automatic ones, identifies bots, and filters them out without loss of response speed. For analysis, we use ML models trained on datasets containing data on many years of experience in protecting Yandex web resources. The datasets are regularly updated. The service does not use ready-made images, but generates them independently, making it possible to maintain an 85% level of human recognition while making it difficult for bots to recognize the CAPTCHA. SmartCaptcha is deployed in the Yandex Cloud infrastructure, which complies with international standards and Russian information security laws. Add verification to your site without the “I’m not a robot” button. An invisible captcha will only be seen by users with suspicious-looking requests. The service generates texts for recognition independently, and you can choose their level of complexity.
Other Popular Alternatives & Related Software
GeeTest
Traditional captcha identifies bots from legitimate users with cognitive challenge. Humans are good at visual recognition task such as image or item recognition, whereas machines not. However, with the development of machine learning, machines are also capable of these cognition tasks. To defend against the sophisticated bot threats, traditional CAPTCHA has to be harder, which leads to high user friction and translates to reduced conversion rates. To solve the security vs user experience problem, GeeTest developed AI-powered Slide CAPTCHA in 2012. Instead of visual recognition challenge, Powered by massive biometric data collected in the past 8 years, GeeTest built a self-adaptive defense model based on Graph Convolutional Networks (GCN). By analyzing over 200+ parameters, our dynamic defense model provides you with a broader and deeper understanding of bot activities associated with any API.
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BotDetect CAPTCHA
BotDetect™ CAPTCHA generator is a non-stalking form-security solution that uses a mix of measures, that are easy for humans but hard for bots, to prevent automated form posting. BotDetect also provides an audio Captcha alternative to keep websites accessible to people with impaired vision, enabling you to make WCAG and Section 508 compliant websites. The years of Google’s relentless abuses of their organic and paid search monopolies, and the years of their equally relentless campaign of disinformation and FUD about captchas, took a toll among our former competitors there are only two viable players left. During its first decade, BotDetect was unique among Captcha generators in offering many different Captcha image and sound algos. While each of them was easily comprehensible to humans, the random use of multiple Captcha generation algos made the generated captchas extremely difficult to pass automatically.
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TrustCaptcha
TrustCaptcha protects your website from bots and spam—without any user interaction. Unlike traditional CAPTCHAs that rely on image puzzles and clicks, TrustCaptcha works invisibly in the background. It activates as users type, completing before they hit submit—reducing bounce rates and improving conversions. Behind the scenes, a smart trust scoring system evaluates each request, while a lightweight proof-of-work mechanism makes spam attacks costly for bots but unnoticeable for real users. This combination blocks abuse without disrupting the user experience. Fully GDPR-compliant and customizable, TrustCaptcha lets you adjust language, design, and visibility—even run it completely hidden. Integration is fast with clear documentation and support for major frameworks. Choose between fixed pricing or pay-per-use, so you only pay for what you need. TrustCaptcha delivers secure, seamless protection that boosts performance—not friction.
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MTCaptcha
MTCaptcha is a smart captcha service that prioritizes privacy and accessibility. It offers an adaptive invisible noCaptcha that is easy for humans but hard for bots, making verification frictionless. MTCaptcha is GDPR and WCAG compliant, ensuring that your data is never sold or shared with third parties. The captcha images are certified colorblind safe and the widget is fully VPAT compliant and optimized for screen readers. MTCaptcha supports any language and can be fully customized to match any webpage. It also supports audio in captcha, making it accessible to users who are visually impaired. MTCaptcha is trusted by Enterprises, Government, NGOs worldwide and is available in all the major world languages. MTCaptcha works around the world, including in China, making it a truly global captcha solution. It is backed by an adaptive Risk Engine that monitors and responds to threats, making it difficult for bots but easy for humans.
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Pricing
Starting Price:
$0.800000 per 1000 requests
Free Trial:
Free Trial available.
Company Information
Yandex
Founded: 1997
Russia
cloud.yandex.com/en/services/smartcaptcha
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