CaptchaAI vs SadCaptcha: Feature and Pricing Comparison

CaptchaAI and SadCaptcha both offer CAPTCHA solving APIs, but they differ in supported types, pricing models, and feature depth. This comparison helps developers evaluate which service fits their automation needs.

Feature Overview

API Design Comparison

CaptchaAI

CaptchaAI uses the standard submit-and-poll pattern with simple REST endpoints:

import requests
import time

def solve_with_captchaai(captcha_type, params, api_key):
    """Universal solve function for any CAPTCHA type."""
    submit_data = {"key": api_key, "json": 1, **params}

    # Submit task
    resp = requests.post("https://ocr.captchaai.com/in.php", data=submit_data)
    result = resp.json()
    if result.get("status") != 1:
        raise Exception(f"Submit failed: {result.get('request')}")
    task_id = result["request"]

    # Poll for result
    for _ in range(60):
        time.sleep(3)
        result = requests.get("https://ocr.captchaai.com/res.php", params={
            "key": api_key,
            "action": "get",
            "id": task_id,
            "json": 1
        })
        data = result.json()
        if data["status"] == 1:
            return data["request"]
        if "ERROR" in data.get("request", ""):
            raise Exception(data["request"])

    raise TimeoutError("Solve timed out")

# reCAPTCHA v2
token = solve_with_captchaai("recaptcha", {
    "method": "userrecaptcha",
    "googlekey": "6Le-wvkSAAAAAPBMRTvw0Q4Muexq9bi0DJwx_mJ-",
    "pageurl": "https://example.com"
}, "YOUR_API_KEY")

# Cloudflare Turnstile
token = solve_with_captchaai("turnstile", {
    "method": "turnstile",
    "sitekey": "0x4AAAAAAAC3DHQFLr1GavRN",
    "pageurl": "https://example.com"
}, "YOUR_API_KEY")

# Image CAPTCHA
import base64
with open("captcha.png", "rb") as f:
    img_b64 = base64.b64encode(f.read()).decode()

answer = solve_with_captchaai("image", {
    "method": "base64",
    "body": img_b64
}, "YOUR_API_KEY")

SadCaptcha

import requests

def solve_with_sadcaptcha(captcha_type, params, api_key):
    headers = {"Authorization": f"Bearer {api_key}"}

    resp = requests.post(
        f"https://www.sadcaptcha.com/api/v1/{captcha_type}",
        json=params,
        headers=headers
    )
    return resp.json()

JavaScript Integration

// CaptchaAI — universal pattern
async function solveCaptchaAI(method, params, apiKey) {
  const submitResp = await fetch('https://ocr.captchaai.com/in.php', {
    method: 'POST',
    body: new URLSearchParams({ key: apiKey, json: '1', method, ...params })
  });
  const { request: taskId } = await submitResp.json();

  for (let i = 0; i < 60; i++) {
    await new Promise(r => setTimeout(r, 3000));
    const result = await fetch(
      `https://ocr.captchaai.com/res.php?key=${apiKey}&action=get&id=${taskId}&json=1`
    );
    const data = await result.json();
    if (data.status === 1) return data.request;
    if (data.request?.includes('ERROR')) throw new Error(data.request);
  }
  throw new Error('Solve timed out');
}

// Solve reCAPTCHA v2
const token = await solveCaptchaAI('userrecaptcha', {
  googlekey: '6Le-wvkSAAAAAPBMRTvw0Q4Muexq9bi0DJwx_mJ-',
  pageurl: 'https://example.com'
}, 'YOUR_API_KEY');

// Solve Turnstile
const cfToken = await solveCaptchaAI('turnstile', {
  sitekey: '0x4AAAAAAAC3DHQFLr1GavRN',
  pageurl: 'https://example.com'
}, 'YOUR_API_KEY');

Success Rate Comparison

Speed Comparison

Integration Ecosystem

Operational Features

When to Choose Each

Choose CaptchaAI when:

• You need the widest CAPTCHA type coverage (27,500+ image types, BLS, all token CAPTCHAs)
• You want 100% success rate on Cloudflare Turnstile and BLS
• Your project targets reCAPTCHA Enterprise sites
• You need multi-language SDK support (Go, PHP, C#)
• You require operational features like webhooks, bad reporting, and soft ID tracking
• You need proxy flexibility (SOCKS5 support)

Choose SadCaptcha when:

• You primarily solve reCAPTCHA v2 and hCaptcha
• You need a service with a different pricing structure
• Your scope is limited to common CAPTCHA types

Migration from SadCaptcha to CaptchaAI

# The migration is straightforward — same submit-and-poll pattern

# Before (SadCaptcha)
resp = requests.post("https://www.sadcaptcha.com/api/v1/recaptcha", json={
    "sitekey": site_key,
    "pageurl": page_url
}, headers={"Authorization": f"Bearer {SAD_KEY}"})
token = resp.json()["solution"]

# After (CaptchaAI)
resp = requests.post("https://ocr.captchaai.com/in.php", data={
    "key": CAI_KEY,
    "method": "userrecaptcha",
    "googlekey": site_key,
    "pageurl": page_url,
    "json": 1
})
task_id = resp.json()["request"]

for _ in range(60):
    time.sleep(3)
    result = requests.get("https://ocr.captchaai.com/res.php", params={
        "key": CAI_KEY, "action": "get", "id": task_id, "json": 1
    })
    if result.json()["status"] == 1:
        token = result.json()["request"]
        break

Key Takeaways

FAQ

Is SadCaptcha cheaper than CaptchaAI?

Pricing varies by CAPTCHA type and volume. Compare per-solve rates for your specific use case. CaptchaAI's broader coverage means using one provider instead of multiple services.

Can I use both services as fallback?

Yes. Some developers use CaptchaAI as primary and another service as fallback. The API patterns are similar enough to implement provider switching with a simple abstraction layer.

Does CaptchaAI support all the same CAPTCHA types as SadCaptcha?

CaptchaAI supports every type SadCaptcha handles, plus additional types like BLS (100% success), 27,500+ image CAPTCHA variants, and broader reCAPTCHA Enterprise coverage.

Related Articles

• Captchaai Vs Capmonster Cloud Comparison
• Captchaai Webhooks Vs Polling
• Geetest Vs Cloudflare Turnstile Comparison

Next Steps

Get wider CAPTCHA coverage from one provider — get your CaptchaAI API key and solve any CAPTCHA type.