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Head-to-head · CAPTCHA Software

Alibaba Cloud CAPTCHA vs Baidu Cloud CAPTCHA

  • Updated Oct 2026
  • Both researched from official sources
  • 1 check side by side
Higher score Alibaba Cloud CAPTCHA #3 in CAPTCHA Software 9.0/10 Paid ✓ 0 of 3 features Visit Alibaba Cloud
Baidu Cloud CAPTCHA #5 in CAPTCHA Software 8.7/10 Pricing on request ✓ 0 of 3 features Visit Baidu Cloud

Alibaba Cloud CAPTCHA leads on 0 checks, Baidu Cloud CAPTCHA on 0, and 1 is even. Who comes out ahead on the 1 yes/no, price and count check where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreAlibaba Cloud CAPTCHA · 9.0/10

Alibaba Cloud CAPTCHA scores higher on our rubric for captcha software: 9.0 against 8.7 out of 10; our editors rank them #3 and #5.

On sdk platforms, Alibaba Cloud CAPTCHA gives you Both where Baidu Cloud CAPTCHA offers Web.

Alibaba Cloud CAPTCHA is the better fit for businesses needing configurable, high-volume CAPTCHA. Baidu Cloud CAPTCHA is the better fit for organizations seeking visual challenges and managed support.

  • Alibaba Cloud CAPTCHA fits best

    Businesses needing configurable, high-volume CAPTCHA

  • Baidu Cloud CAPTCHA fits best

    Organizations seeking visual challenges and managed support

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Side by side

Feature Alibaba Cloud CAPTCHA 9.0/10 Visit ↗ Baidu Cloud CAPTCHA 8.7/10 Visit ↗
At a glance
Editor score 9.0 8.7
Ranking #3 in CAPTCHA Software #5 in CAPTCHA Software
Best for Businesses needing configurable, high-volume CAPTCHA Organizations seeking visual challenges and managed support
Pricing model Paid Paid
Starting price $0.0007/unit usage-based Pricing on request
Free plan — —
Free trial — —
Deployment Cloud Cloud
Platforms Web, iOS, Android Web
Support Live chat, Tickets, Docs Phone, Tickets, Docs, Live chat · 24/7
Built for Mid-market, Enterprise Small business, Mid-market, Enterprise
Features Alibaba Cloud CAPTCHA 0/3 · Baidu Cloud CAPTCHA 0/3
Audio challenge Not checked yet Not checked yet
Accessibility options Not checked yet Not checked yet
Privacy controls Not checked yet Not checked yet
Specs
CAPTCHA modes Not checked yet Not checked yet
Monthly verifications Not checked yet Not checked yet
SDK platforms Both Web
Our review
Pros
  • Combines invisible risk checks with four visual challenge types
  • Supports web, H5, Android, iOS and WeChat Mini Programs
  • Offers policy controls and default support for up to 1,000 QPS
  • Offers slider, numeric image, text-order, and track-drawing challenges
  • Selects challenge types dynamically according to risk
  • Includes server-side verification and advertises 99.99% availability
Cons
  • Usage-based verification costs differ by region
  • Custom policy configurations cost $5 per day
  • Additional scenarios cost $1 per scenario per day after the first three
  • Pricing is contact-sales, and there is no perpetual free plan
  • Documented SDK support is for web and H5; mobile support is not yet available
  • Cloud deployment may not fit organizations requiring another deployment model
Our verdict

Alibaba Cloud CAPTCHA is a managed verification service for websites, H5 pages, mobile apps and WeChat Mini Programs. It is aimed at mid-market and enterprise businesses protecting account registration and login, preventing SMS floods,…

Read the review →

Baidu Cloud CAPTCHA is a cloud-hosted human-verification service for websites and H5 pages. It is aimed at organizations protecting registration, login, marketing campaigns, community interactions, and downloadable resources. Its visual…

Read the review →
  1. Alibaba Cloud CAPTCHACAPTCHA Software 9.0Paid
  2. Baidu Cloud CAPTCHACAPTCHA Software 8.7Pricing on request

Strengths and trade-offs

  • Alibaba Cloud CAPTCHA — where it wins

    • Combines invisible risk checks with four visual challenge types
    • Supports web, H5, Android, iOS and WeChat Mini Programs
    • Offers policy controls and default support for up to 1,000 QPS

    Where it doesn't

    • Usage-based verification costs differ by region
    • Custom policy configurations cost $5 per day
    • Additional scenarios cost $1 per scenario per day after the first three

  • Baidu Cloud CAPTCHA — where it wins

    • Offers slider, numeric image, text-order, and track-drawing challenges
    • Selects challenge types dynamically according to risk
    • Includes server-side verification and advertises 99.99% availability

    Where it doesn't

    • Pricing is contact-sales, and there is no perpetual free plan
    • Documented SDK support is for web and H5; mobile support is not yet available
    • Cloud deployment may not fit organizations requiring another deployment model

More comparisons

All CAPTCHA software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update