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Head-to-head · CAPTCHA Software

Cloudflare Turnstile vs Anubis

  • Updated Oct 2026
  • Both researched from official sources
  • 4 checks side by side
Higher score Cloudflare Turnstile #1 in CAPTCHA Software 9.4/10 Free plan Free plan✓ 2 of 3 features Visit Cloudflare
Anubis #8 in CAPTCHA Software 8.2/10 Free plan Free plan✓ 0 of 3 features Visit Anubis

Cloudflare Turnstile leads on 0 checks, Anubis on 0, and 4 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreCloudflare Turnstile · 9.4/10
  • Free planboth
  • Most featuresCloudflare Turnstile · 2 of 3

Cloudflare Turnstile scores higher on our rubric for captcha software: 9.4 against 8.2 out of 10; our editors rank them #1 and #8.

Cloudflare Turnstile is the better fit for teams wanting a free, low-friction web CAPTCHA. Anubis is the better fit for small teams self-hosting request-level bot challenges.

  • Cloudflare Turnstile fits best

    Teams wanting a free, low-friction web CAPTCHA

  • 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 Cloudflare Turnstile 9.4/10 Visit ↗ Anubis 8.2/10 Visit ↗
At a glance
Editor score 9.4 8.2
Ranking #1 in CAPTCHA Software #8 in CAPTCHA Software
Best for Teams wanting a free, low-friction web CAPTCHA Small teams self-hosting request-level bot challenges
Pricing model Free plan + paid Free
Starting price — Free plan
Free plan ✓ ✓
Free trial — —
Deployment Cloud Self-hosted
Platforms Web Linux, Windows
Support Community, Docs Tickets, Community
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business
Features Cloudflare Turnstile 2/3 · Anubis 0/3
Audio challenge — Not checked yet
Accessibility options ✓ (best) Not checked yet
Privacy controls ✓ (best) Not checked yet
Specs
CAPTCHA modes Not checked yet Not checked yet
Monthly verifications Not checked yet Not checked yet
SDK platforms Both Not checked yet
Our review
Pros
  • Free plan includes up to 20 widgets and unlimited challenges
  • Managed mode can require a checkbox based on risk signals
  • Siteverify API validates tokens server-side
  • 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
  • Free plan support is community-based
  • Enterprise pricing is custom
  • No audio challenge option
  • 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

Cloudflare Turnstile is a CAPTCHA alternative for websites and applications that need to distinguish human visitors from automated traffic. It fits teams seeking verification that can avoid interrupting visitors, from solo projects through…

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. Cloudflare TurnstileCAPTCHA Software 9.4Free plan
  2. AnubisCAPTCHA Software 8.2Free plan

Strengths and trade-offs

  • Cloudflare Turnstile — where it wins

    • Free plan includes up to 20 widgets and unlimited challenges
    • Managed mode can require a checkbox based on risk signals
    • Siteverify API validates tokens server-side

    Where it doesn't

    • Free plan support is community-based
    • Enterprise pricing is custom
    • No audio challenge option

  • 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
  • Cloudflare Turnstile9.4/10 · Free plan

    A free CAPTCHA alternative with adaptive checks, invisible modes and server-side validation.

    Visit CloudflareFull 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