Captchas.io vs. 2Captcha
Objective architectural, pricing, and protocol comparison. Metrics reflect verified vendor specifications and third-party aggregator observations.
Captchas.io is an automated OCR and machine learning cloud platform structured around monthly thread subscriptions starting at $22/mo for 5 ...
2Captcha (and its CIS sister service RuCaptcha) is one of the oldest and largest human-powered CAPTCHA solving networks globally. Establishe...
Supported Anti-Bot & CAPTCHA Types
Side-by-side support status across 14 major puzzle formats based on official API documentation.
| Challenge Mechanism | Captchas.io | 2Captcha |
|---|---|---|
| Cloudflare Turnstile | — Not Listed | ✓ Supported |
| Google reCAPTCHA v2 | ✓ Supported | ✓ Supported |
| Google reCAPTCHA v3 | ✓ Supported | ✓ Supported |
| reCAPTCHA Enterprise | — Not Listed | ✓ Supported |
| Arkose Labs (FunCaptcha) | — Not Listed | ✓ Supported |
| GeeTest (v3 / v4) | — Not Listed | ✓ Supported |
| hCaptcha | ✓ Supported | ✓ Supported |
| Amazon AWS WAF Captcha | — Not Listed | ✓ Supported |
| DataDome Interstitial | — Not Listed | ✓ Supported |
| Image / Text OCR | ✓ Supported | ✓ Supported |
| Audio Recognition | — Not Listed | ✓ Supported |
| Kasada Anti-Bot | — Not Listed | ✓ Supported |
| Akamai BMP / Shield | — Not Listed | ✓ Supported |
| Lemin Captcha | — Not Listed | ✓ Supported |
Documented Rates by Challenge Type (per 1,000 Solves)
Direct cost comparison per 1,000 successful solves. Attributed to captchathecat.com telemetry (October 2026).
| Challenge Type | Captchas.io Rate / 1k | 2Captcha Rate / 1k |
|---|---|---|
| Image / Text OCR | Custom / Inquire | $0.50 |
| reCAPTCHA v2 (Checkbox / Invisible) | Custom / Inquire | $1.50 |
| reCAPTCHA v3 (Score-based) | Custom / Inquire | $1.50 |
| reCAPTCHA Enterprise | Custom / Inquire | $5.00 |
| Cloudflare Turnstile | Custom / Inquire | $1.45 |
| Arkose Labs (FunCaptcha) | Custom / Inquire | $1.45 |
| GeeTest (v3 / v4) | Custom / Inquire | $1.50 |
| hCaptcha | $4.00 | $1.50 |
| Amazon AWS WAF Captcha | Custom / Inquire | $1.45 |
| DataDome Interstitial | Custom / Inquire | $1.45 |
Technical Specifications & Protocol Integrations
SDK libraries, API protocols, funding minimums, and architectural characteristics.
| Specification | Captchas.io | 2Captcha |
|---|---|---|
| Architecture Paradigm | ai vision | ai vision |
| Commercial Model | pay as you go | pay as you go |
| Starting Price / 1k | Inquire | $0.50 |
| Minimum Account Deposit | $22.00 | $3.00 |
| Supported Protocols | Captchas.io REST API2Captcha Protocol Emulation | 2Captcha Protocol (in.php / res.php Form-Data Polling) |
| Available Client SDKs | PythonPHPC# | GoC++PHPPythonRubyJavaC# |
| Accepted Payment Methods | VisaMastercardPayPalBitcoinLitecoinEthereum | VisaMastercardAmerican ExpressPayPalUSDTBitcoinEthereumLitecoinDashPixBoletoSofortAlipayiDEALWebMoneyPayPro |
| Year Founded | 2019 | 2014 |
Reported Performance & Telemetry Observations
Strict segregation between vendor-stated claims and third-party aggregator measurements.
| Performance Metric | Captchas.io | 2Captcha |
|---|---|---|
| Vendor Stated Latency | Undisclosed by vendor | 12s Vendor Claim |
| Vendor Stated Accuracy | Undisclosed by vendor | 99% Vendor Claim |
| Aggregator Observed Latency | Pending Laboratory Run | 4.91s Aggregator Telemetry |
| Aggregator Observed Accuracy | Pending Laboratory Run | 100% Aggregator Telemetry |
| Laboratory Rating | Unrated (Laboratory Run Queued) | Unrated (Laboratory Run Queued) |
| Source Documentation Reference | https://captchathecat.com/service/captchasio ↗ | https://captchathecat.com/service/2captcha ↗ |
Architectural Trade-offs & Selection Factors
Choosing between Captchas.io and 2Captcha depends on the structural bottlenecks in your scraping or automation infrastructure.
High-speed automated scraping workflows where sub-3-second latency and minimal token cost are required.
High-speed automated scraping workflows where sub-3-second latency and minimal token cost are required.