Cloudflare Turnstile
captcha · Cloudflare · public (NET)
Managed Turnstile reliably stops naive headless automation but issues a clean pass to a properly stealthed real browser — the exact profile a determined scraper uses.
Marketing claims
No claim captured yet.
Claim archaeology — what has been marketed, and when
Monthly Wayback snapshots of the 1 page listed below, read back to 2019. A number reaches this timeline only after the sentence around it was read and judged to be Cloudflare Turnstile describing its own product. Those judgements were made by an AI model (claude-opus-5) and have not yet been checked by a person. Every one is published with the quote it was made from and the reason it was made, so you can check it against the archived page yourself. Numbers that turned out to be customer case studies, uptime SLAs or traffic-composition stats are listed further down — recorded, not published. Nothing is inferred between two dated snapshots.
No claim we could publish as Cloudflare Turnstile describing its own product has been found in any of the 30 months we were able to read on the pages we track, out of 92 probed between 2019-01 and 2026-08. That is a statement about these pages only — see the list below.
No publishable claim was found on these pages for: detection accuracy, coverage, false-positive rate, decision latency.
| Page | Era | Months probed | Months read |
|---|---|---|---|
| www.cloudflare.com/products/turnstile/ 2019-01 – 2026-08 | current | 92 | 30 |
“Months read” counts snapshots we actually retrieved and searched.
Sanctioned test surfaces
| Surface | Type | Tier | Basis |
|---|---|---|---|
| Own Turnstile widget (managed, API-minted) | self-deploy-free | B | We minted + own the widget via our CF account |
A — vendor invites testing · B — our own deployment · C — passive observation
Our test results
| Surface | Technique | Outcome | When |
|---|---|---|---|
| Own Turnstile widget (managed, API-minted) B | — | blocked | 2026-08-13 |
| Own Turnstile widget (managed, API-minted) B | — | passed | 2026-08-13 |
Cited external benchmarks
None cited yet.