Cloudflare Turnstile
Cloudflare Turnstile: A free CAPTCHA alternative with adaptive checks, invisible modes and server-side validation. Ranked #1 of 32 in CAPTCHA Software by our editors (9.4/10); pricing: Free plan; best for teams wanting a free, low-friction web CAPTCHA.
At a glance
- Editor score9.4 / 10
- PricingFree plan
- Best forTeams wanting a free, low-friction web CAPTCHA
- Free planYes
- Founded2009 · San Francisco, CA
- Facts checked22 Oct 2026
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
Our verdict on Cloudflare Turnstile
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 enterprise organizations. Turnstile operates independently of Cloudflare’s CDN and supports web and API use, so sites hosted elsewhere can use it too.
Its three widget modes offer different levels of friction: managed mode uses risk signals to decide whether an interactive checkbox is needed, while non-interactive and invisible modes avoid that checkbox experience. Client-side browser challenges include proof-of-work and proof-of-space. For sensitive actions such as login or form submission, the Siteverify API validates tokens server-side. Pre-clearance cookie support is available for single-page applications, and Turnstile Analytics provides challenge and solve-rate metrics. Widget size, appearance, theme, language and accessibility settings are configurable; the listed accessibility posture includes WCAG 2.2 AAA compliance.
The published plans show a Turnstile Free option with up to 20 widgets, unlimited challenges and community support. Enterprise adds unlimited widgets and challenges, up to 200 hostnames per widget, and a 30-day analytics lookback; pricing is custom. Documentation and community support are the listed support channels, so organizations that require a different support arrangement may want to weigh that fit. Turnstile is a strong option for teams that want free, adaptable web CAPTCHA without a numeric monthly verification cap. Teams that specifically require audio challenges should consider another product.
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Cloudflare Turnstile pricing
All 2 Cloudflare Turnstile plans and prices →
Cloudflare Turnstile fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Not verified |
| CAPTCHA modes | Not verified |
| Audio challenge | No |
| Accessibility options | Yes |
| Monthly verifications | Not verified |
| SDK platforms | Both |
| Privacy controls | Yes |
| Deployment | Cloud |
| Platforms | Web |
| Support | Community, Docs |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Free plan (source) |
| Website | cloudflare.com |
| Facts checked | 22 Oct 2026 |
Alternatives to Cloudflare Turnstile
- Google reCAPTCHAAdaptive bot protection with web and Android options and a free monthly allowance.9.2
- Alibaba Cloud CAPTCHAA managed CAPTCHA service with regional per-call pricing and policy controls.9.0
- Friendly CaptchaBackground proof-of-work challenges suit teams seeking accessible, privacy-minded bot protection.8.9
See all Cloudflare Turnstile alternatives →
Cloudflare Turnstile vs the competition
- Cloudflare Turnstile vs Google reCAPTCHA
- Cloudflare Turnstile vs Alibaba Cloud CAPTCHA
- Cloudflare Turnstile vs Friendly Captcha
- Cloudflare Turnstile vs Baidu Cloud CAPTCHA
- Cloudflare Turnstile vs Tencent Cloud Captcha
- Cloudflare Turnstile vs NetEase Yidun CAPTCHA
Compare Cloudflare Turnstile with any tool side by side →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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