EndCaptcha vs. 9kw.eu
Objective architectural, pricing, and protocol comparison. Metrics reflect verified vendor specifications and third-party aggregator observations.
EndCaptcha positions itself as an enterprise-grade high-reliability provider with contractual guarantees. Uniquely offering Slowness Insuran...
Founded in 2011 in Germany, 9kw.eu is an atypical community-oriented platform operating on a mutual credit-exchange mechanism: developers so...
Supported Anti-Bot & CAPTCHA Types
Side-by-side support status across 14 major puzzle formats based on official API documentation.
| Challenge Mechanism | EndCaptcha | 9kw.eu |
|---|---|---|
| Cloudflare Turnstile | — Not Listed | — Not Listed |
| Google reCAPTCHA v2 | ✓ Supported | ✓ Supported |
| Google reCAPTCHA v3 | ✓ Supported | ✓ Supported |
| reCAPTCHA Enterprise | — Not Listed | — Not Listed |
| Arkose Labs (FunCaptcha) | — Not Listed | — Not Listed |
| GeeTest (v3 / v4) | — Not Listed | — Not Listed |
| hCaptcha | ✓ Supported | ✓ Supported |
| Amazon AWS WAF Captcha | — Not Listed | — Not Listed |
| DataDome Interstitial | — Not Listed | — Not Listed |
| Image / Text OCR | ✓ Supported | ✓ Supported |
| Audio Recognition | — Not Listed | ✓ Supported |
| Kasada Anti-Bot | — Not Listed | — Not Listed |
| Akamai BMP / Shield | — Not Listed | — Not Listed |
| Lemin Captcha | — Not Listed | — Not Listed |
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 | EndCaptcha Rate / 1k | 9kw.eu Rate / 1k |
|---|---|---|
| Image / Text OCR | $3.99 | $1.35 |
| reCAPTCHA v2 (Checkbox / Invisible) | $3.99 | $3.38 |
| reCAPTCHA v3 (Score-based) | $3.99 | $3.38 |
| reCAPTCHA Enterprise | Custom / Inquire | Custom / Inquire |
| Cloudflare Turnstile | Custom / Inquire | Custom / Inquire |
| Arkose Labs (FunCaptcha) | Custom / Inquire | Custom / Inquire |
| GeeTest (v3 / v4) | Custom / Inquire | Custom / Inquire |
| hCaptcha | $3.99 | Custom / Inquire |
| Amazon AWS WAF Captcha | Custom / Inquire | Custom / Inquire |
| DataDome Interstitial | Custom / Inquire | Custom / Inquire |
Technical Specifications & Protocol Integrations
SDK libraries, API protocols, funding minimums, and architectural characteristics.
| Specification | EndCaptcha | 9kw.eu |
|---|---|---|
| Architecture Paradigm | hybrid | hybrid |
| Commercial Model | pay as you go | pay as you go |
| Starting Price / 1k | $3.99 | $0.00 |
| Minimum Account Deposit | $11.99 | $5.40 |
| Supported Protocols | EndCaptcha REST APIDeathByCaptcha Protocol Emulation2Captcha Protocol Emulation | 9kw Custom HTTP REST APICaptchabot / 2Captcha Protocol Emulation |
| Available Client SDKs | PythonPHPJavaC# | HTTP/REST PluginsJDownloader Plugin |
| Accepted Payment Methods | Credit CardsPayPalCryptocurrency | SEPA Bank TransferDigital Dashboard Gateways |
| Year Founded | 2017 | 2011 |
Reported Performance & Telemetry Observations
Strict segregation between vendor-stated claims and third-party aggregator measurements.
| Performance Metric | EndCaptcha | 9kw.eu |
|---|---|---|
| Vendor Stated Latency | 7s Vendor Claim | Undisclosed by vendor |
| Vendor Stated Accuracy | 99% Vendor Claim | Undisclosed by vendor |
| Aggregator Observed Latency | Pending Laboratory Run | 3.24s Aggregator Telemetry |
| Aggregator Observed Accuracy | Pending Laboratory Run | Pending Laboratory Run |
| Laboratory Rating | Unrated (Laboratory Run Queued) | Unrated (Laboratory Run Queued) |
| Source Documentation Reference | https://captchathecat.com/service/endcaptcha ↗ | https://captchathecat.com/service/9kw ↗ |
Architectural Trade-offs & Selection Factors
Choosing between EndCaptcha and 9kw.eu depends on the structural bottlenecks in your scraping or automation infrastructure.
Diverse multi-step visual challenges or legacy scraper integration where human verification fallback is essential.
Diverse multi-step visual challenges or legacy scraper integration where human verification fallback is essential.