Reference

CAPTCHA Types Comparison Matrix 2025

All CAPTCHA Types Web Scraping
By Irina
Published at Mar 31, 2026
CAPTCHA Types Comparison Matrix 2025
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Every major CAPTCHA type compared on difficulty, user experience, adoption, and solvability.

Quick Comparison

CAPTCHA Type Provider User Interaction Solve Method CaptchaAI Success
reCAPTCHA v2 Google Checkbox + image select userrecaptcha High
reCAPTCHA v2 Invisible Google None (background) userrecaptcha High
reCAPTCHA v3 Google None (score-based) userrecaptcha + version=v3 High
reCAPTCHA Enterprise Google Varies userrecaptcha High
Cloudflare Turnstile Cloudflare None / managed turnstile 100%
Cloudflare Challenge Cloudflare Browser verification cloudflare_challenge High
GeeTest v3 GeeTest Slide / click geetest 100%
GeeTest v4 GeeTest Slide / click / icon geetest + version=4 100%
BLS BLS Image grid bls 100%
hCaptcha IMachines Image classification hcaptcha High
Image/OCR Various Type text base64 27,500+ types

Detailed Breakdown

reCAPTCHA v2

Attribute Details
Challenge Checkbox → may trigger image grid
Parameters googlekey (sitekey), pageurl
Token lifetime ~120 seconds
Detection basis Mouse behavior, browsing history, cookies
Market share Largest overall
Free tier Yes (up to 1M assessments/month)

reCAPTCHA v3

Attribute Details
Challenge Invisible — no user interaction
Parameters googlekey, pageurl, version=v3, action, min_score
Token lifetime ~120 seconds
Detection basis Behavioral score (0.0 to 1.0)
Key requirement action must match site configuration
Use case Background bot detection

reCAPTCHA Enterprise

Attribute Details
Challenge Varies (v2-style or score-based)
Parameters googlekey, pageurl, enterprise=1
Pricing Per-assessment (Google Cloud)
Extra features Reason codes, password breach detection
Integration Google Cloud Console

Cloudflare Turnstile

Attribute Details
Challenge Invisible or managed widget
Parameters sitekey, pageurl
Token lifetime 300 seconds (5 minutes)
Detection basis Browser signals, TLS fingerprint
Pricing Free (unlimited)
Growing adoption Replacing reCAPTCHA on many sites

GeeTest v3

Attribute Details
Challenge Slide puzzle, click targets
Parameters gt, challenge, pageurl
Token lifetime 60-120 seconds
Challenge freshness Must extract new challenge each time
Market focus China, Asia-Pacific, gaming

GeeTest v4

Attribute Details
Challenge Slide, click, icon select, space reasoning
Parameters gt (captcha_id), pageurl, version=4
Key change from v3 No separate challenge parameter
Validation lot_number + pass_token instead of validate
Difficulty Adaptive risk scoring

BLS CAPTCHA

Attribute Details
Challenge Image grid ordering/selection
Parameters sitekey, pageurl, instructions, code
Market focus BLS visa/government services
Variations Order images, select matching images

Image/OCR CAPTCHA

Attribute Details
Challenge Distorted text to type
Parameters body (base64), numeric, regsense, minLen, maxLen, calc
Varieties 27,500+ types supported
Submission Base64-encoded image
Enhancements Preprocessing, text instructions
Trend Description
Turnstile growth Cloudflare Turnstile rapidly replacing reCAPTCHA on sites already using Cloudflare CDN
Invisible-first Sites prefer invisible CAPTCHAs (v3, Turnstile) to reduce user friction
Enterprise shift Large sites moving from free reCAPTCHA to Enterprise or Turnstile
Regional patterns GeeTest dominates Asia; reCAPTCHA dominates globally; Turnstile growing in Western markets
Image decline Fewer sites using traditional image CAPTCHAs; still common on legacy platforms

Decision Guide: Which CAPTCHA Will You Encounter?

Site Type Most Likely CAPTCHA
Google services reCAPTCHA v2 or v3
Cloudflare-protected sites Turnstile or Cloudflare Challenge
Chinese platforms GeeTest v3 or v4
Government services BLS, custom image, or reCAPTCHA v2
SaaS login pages reCAPTCHA v3 or Turnstile
Legacy forums/CMSes Image/OCR or reCAPTCHA v2
E-commerce reCAPTCHA v2, Turnstile, or hCaptcha

FAQ

Which CAPTCHA is hardest to solve?

For end users, reCAPTCHA v2 image grids are the most frustrating. For automated solvers, all types have high success rates with CaptchaAI.

Which CAPTCHA is best for site owners?

Cloudflare Turnstile offers the best balance: free, invisible, and effective. For advanced needs, reCAPTCHA Enterprise provides detailed analytics.

Are image CAPTCHAs obsolete?

Not yet. They remain common on older platforms, government sites, and custom implementations. But new sites increasingly choose invisible solutions.

Solve every CAPTCHA type — start with CaptchaAI.

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