AWS WAF — $0.30 / 1000
BLS Captcha — $0.18 / 1000
Geetest — $0.22 / 1000
Image To Text — $0.16 / 1000
MTCaptcha — $0.16 / 1000
Prosopo Procaptcha — N/A
reCAPTCHA v2 — $0.14 / 1000
reCAPTCHA v3 — N/A