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Head-to-head · CAPTCHA Software

Baidu Cloud CAPTCHA vs Anubis

  • Updated Oct 2026
  • Both researched from official sources
  • 1 check side by side
Higher score Baidu Cloud CAPTCHA #5 in CAPTCHA Software 8.7/10 Pricing on request ✓ 0 of 3 features Visit Baidu Cloud
Anubis #8 in CAPTCHA Software 8.2/10 Free plan Free plan✓ 0 of 3 features Visit Anubis

Baidu Cloud CAPTCHA leads on 0 checks, Anubis on 1, and 0 are 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 scoreBaidu Cloud CAPTCHA · 8.7/10
  • Free planonly Anubis

Baidu Cloud CAPTCHA scores higher on our rubric for captcha software: 8.7 against 8.2 out of 10; our editors rank them #5 and #8.

Anubis offers free plan; Baidu Cloud CAPTCHA doesn't.

Baidu Cloud CAPTCHA is the better fit for organizations seeking visual challenges and managed support. Anubis is the better fit for small teams self-hosting request-level bot challenges.

  • Baidu Cloud CAPTCHA fits best

    Organizations seeking visual challenges and managed support

  • Anubis fits best

    Small teams self-hosting request-level bot challenges

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Baidu Cloud CAPTCHA 8.7/10 Visit ↗ Anubis 8.2/10 Visit ↗
At a glance
Editor score 8.7 8.2
Ranking #5 in CAPTCHA Software #8 in CAPTCHA Software
Best for Organizations seeking visual challenges and managed support Small teams self-hosting request-level bot challenges
Pricing model Paid Free
Starting price Pricing on request Free plan
Free plan — ✓ (best)
Free trial — —
Deployment Cloud Self-hosted
Platforms Web Linux, Windows
Support Phone, Tickets, Docs, Live chat · 24/7 Tickets, Community
Built for Small business, Mid-market, Enterprise Solo, Small business
Features Baidu Cloud CAPTCHA 0/3 · Anubis 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 Web Not checked yet
Our review
Pros
  • 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
  • Proof-of-work challenges with configurable difficulty and algorithm
  • Policies can allow, deny, challenge, or weigh requests
  • Reverse proxying, Prometheus-style metrics, and health checks
Cons
  • 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
  • Requires self-hosting in front of an existing service
  • No behavioral analysis or device fingerprinting
  • Focused on request challenges rather than a broad managed CAPTCHA service
Our verdict

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 →

Anubis is an open-source reverse proxy utility for website operators who want to protect an upstream service from scraper bots, including AI crawlers. It evaluates incoming requests against configurable policies and can allow, deny, weigh,…

Read the review →
  1. Baidu Cloud CAPTCHACAPTCHA Software 8.7Pricing on request
  2. AnubisCAPTCHA Software 8.2Free plan

Strengths and trade-offs

  • 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

  • Anubis — where it wins

    • Proof-of-work challenges with configurable difficulty and algorithm
    • Policies can allow, deny, challenge, or weigh requests
    • Reverse proxying, Prometheus-style metrics, and health checks

    Where it doesn't

    • Requires self-hosting in front of an existing service
    • No behavioral analysis or device fingerprinting
    • Focused on request challenges rather than a broad managed CAPTCHA service
  • Baidu Cloud CAPTCHA8.7/10 · Pricing on request

    A cloud CAPTCHA service for web and H5 flows that need adaptive visual challenges.

    Visit Baidu CloudFull verdict →
  • Anubis8.2/10 · Free plan

    A free, open-source reverse proxy for operators who want request-level bot challenges.

    Visit AnubisFull verdict →

More comparisons

All CAPTCHA software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update