CapMonster Cloud Review 2026
Cloud AI CAPTCHA-solving API · 20+ CAPTCHA types · pay-per-solve · built-in proxies
CapMonster Cloud is a cloud-based, AI-powered CAPTCHA-solving service from ZennoLab, the team behind ZennoPoster, aimed at automation and web-scraping workflows. You send a CAPTCHA to its JSON API and get back a solved token or text answer, usually within a few seconds. The vendor lists 20+ CAPTCHA types - reCAPTCHA v2/v3/Enterprise, Cloudflare Turnstile and Bot Challenge, GeeTest, Amazon WAF, Tencent, Yidun, DataDome, Imperva (Incapsula) and text/image CAPTCHAs among them. It ships official SDKs for C#, Python, JavaScript, GO and PHP, plus Chrome and Firefox extensions that auto-detect and solve challenges in the background. Pricing is pay-per-solve and published per CAPTCHA type, with proxies included in the price so, in the vendor's words, "in most cases you won't need to connect your own proxies." CapMonster Cloud also advertises drop-in compatibility with other CAPTCHA services' APIs, meaning existing code can often be pointed at it with minimal change.
By the numbers
Figures below are as stated by the vendor on capmonster.cloud at time of writing.
Published pricing
Pay-per-solve rates the vendor publishes, per 1000 solved tokens unless noted. Success rates shown where the vendor states a per-type figure.
| CAPTCHA type | Rate | Stated success |
|---|---|---|
| reCAPTCHA v2 | $0.60 / 1K (or $0.04 / 1K images) | 99% |
| reCAPTCHA v3 | $0.90 / 1K | - |
| reCAPTCHA v2 Enterprise | $1.00 / 1K | - |
| reCAPTCHA v3 Enterprise | $1.50 / 1K | - |
| Cloudflare Turnstile | $1.30 / 1K | 99% |
| Cloudflare Bot Challenge | $1.30 / 1K | - |
| Amazon WAF | $1.40 / 1K | - |
| Tencent CAPTCHA | $1.60 / 1K | - |
| GeeTest | $1.20 / 1K | 98% |
| Yidun | $1.00 / 1K | 95% |
| Text CAPTCHA | $0.30 / 1K | - |
The vendor states billing is success-only: "you only pay for successfully solved CAPTCHAs - no hidden fees." It also advertises a loyalty program adding +5% / +10% / +15% balance bonus at $500 / $1000 / $10000 of solved CAPTCHAs, and an affiliate program paying up to 30% of user spend. Enterprise pricing is not published - the vendor directs business buyers to contact sales.
What it offers
CAPTCHA types listed
The vendor also lists Faucet Pay and states "8+ more" types beyond those shown.
Official SDKs
Product lines
Key characteristics
AI-powered solving
The service solves CAPTCHAs automatically via an AI backend and returns a token or text answer, typically within a few seconds per the vendor.
Simple JSON API
A JSON request/response API with official SDKs for C#, Python, JavaScript, GO and PHP - no software to install beyond an API key.
Browser extensions
Chrome and Firefox extensions auto-detect and solve CAPTCHAs in the background while you browse, for hands-free workflows.
Built-in proxies
Proxy is included in the per-solve price, so the vendor states you often will not need to connect your own proxies.
Drop-in compatibility
The vendor advertises compatibility with other CAPTCHA services APIs so existing integrations can be pointed at CapMonster Cloud.
Success-only billing
The vendor states you only pay for successfully solved CAPTCHAs, with no hidden fees, plus volume balance bonuses at higher spend.
20+ CAPTCHA types
reCAPTCHA v2/v3/Enterprise, Cloudflare Turnstile and Bot Challenge, GeeTest, Amazon WAF, Tencent, Yidun, DataDome and Imperva among those listed.
Enterprise option
The vendor lists an enterprise tier with a dedicated account manager, a stated 99% SLA and scaling - pricing on request via sales.
Who it is for
CapMonster Cloud targets developers and automation teams who hit CAPTCHAs inside scrapers, bots or account workflows and want a hosted API to clear them rather than building their own solver. The SDK coverage (C#, Python, JavaScript, GO, PHP) and stated drop-in compatibility with other services' APIs make it easy to slot into existing code, while the Chrome and Firefox extensions suit lighter, manual browsing where challenges appear. ZennoPoster users are an obvious fit given the shared ZennoLab origin - the vendor grants them 5,000 free solves for testing. Because pricing is per-solve with proxies bundled, it also suits teams that want predictable, usage-based cost without managing a separate proxy pool for the solver itself.
How it works
- 1Register an account on capmonster.cloud and top up a prepaid balance.
- 2Grab your personal API key (or install the Chrome / Firefox extension).
- 3Send the CAPTCHA to the JSON API using one of the official SDKs, or point existing solver code at CapMonster Cloud thanks to its stated compatibility with other services APIs.
- 4Receive the solved token or text answer, usually within a few seconds, and submit it from your browser or scraper. You are billed per successful solve, with proxies included in the price.
The vendor states refunds are available within 3 days of purchase if the service does not meet your needs, and that a $0.10 test balance can be granted on request to support.
Honest limitations
To keep this review credible, here is the line between what CapMonster Cloud publishes and what it does not. We do not present the vendor's self-reported metrics as our own findings.
- Ownership is vendor-stated. The service is described as "by ZennoLab," but the pages read do not prominently show a registered legal entity, company address or corporate details.
- Metrics are self-reported. The 95-99% per-type success rates and the "1000+ companies" figure are vendor claims with no independent verification on-site. Third-party ratings shown (ProductHunt, SaaSHub, SourceForge, Trustpilot) are displayed by the vendor.
- Testing is gated. There is no standing free plan - the only trial is a $0.10 test balance granted on request to support (ZennoPoster users get 5,000 free solves), and refunds are limited to within 3 days of purchase.
- SLA and enterprise pricing. The 99% SLA is mentioned only for the enterprise tier; no general uptime SLA is published for standard API users, and enterprise pricing requires contacting sales.
- Dual pricing can confuse estimates. Some image-recognition CAPTCHAs are quoted per 1000 images rather than per 1000 tokens, which complicates cost forecasting.
- Thin contact surface. The pages read expose only a web inquiry form - no public email address, phone number or postal/legal-entity address.
- Terms-of-service caveat. CAPTCHA-solving can conflict with a target site's terms of service. Use it responsibly and lawfully, and only where you are permitted to automate.
Using CapMonster Cloud with PROXIES.SX mobile proxies
A CAPTCHA solver and a proxy network solve two different problems, and they work best together. CapMonster Cloud clears the challenge that already appeared; a carrier-grade IP changes how often a challenge appears at all. The bigger driver of a CAPTCHA showing up is usually the reputation of the IP and the browser fingerprint behind the request, not the solver. Pair CapMonster Cloud with proxies.sx 4G/5G mobile or residential proxies so your scraper or browser presents a real carrier IP, then let the solver handle the challenges that still get through.
CapMonster Cloud
Solver layer - returns a token or answer for the CAPTCHA that appeared, via API or extension.
PROXIES.SX
Network layer - 4G/5G mobile or residential IP so requests look like a real carrier, reducing how often challenges fire.
Antidetect browser
Fingerprint layer - GoLogin, AdsPower or similar per profile.
Note: CapMonster Cloud bundles its own proxies for the solve step. PROXIES.SX proxies are for the traffic you control - the browser or scraper that submits the solved token. Both should be used within the terms of service of the sites you target.
PROXIES.SX pricing →Verdict
CapMonster Cloud's strongest signals are transparency and integration: pay-per-solve pricing published per CAPTCHA type, five official SDKs, Chrome and Firefox extensions, built-in proxies, and stated drop-in compatibility with other services' APIs make it easy to adopt and to budget. The honest trade-offs are the ones common to this category: success rates and user counts are self-reported, ownership is only vendor-stated (by ZennoLab) with no legal entity or address prominently shown, testing is gated behind a small on-request balance, and the 99% SLA applies only to the enterprise tier. Treat the vendor's metrics as claims to verify against your own workload, and remember a solver is only half the stack - pair it with a carrier-grade IP from proxies.sx and an antidetect browser, and use it within each target site's terms of service.
Related reviews
CapMonster Cloud facts reflect the vendor's stated product lines, CAPTCHA types and published pay-per-solve pricing on capmonster.cloud at time of writing. The service is described as "by ZennoLab"; success rates (95-99%), the "1000+ companies" figure and displayed third-party ratings are vendor-reported and shown as such rather than presented as our findings. Ownership legal entity, a general uptime SLA for standard users, and enterprise pricing are not published, and are marked as such rather than inferred. CAPTCHA-solving can conflict with a target site's terms of service; readers must use it responsibly and lawfully. Outbound links to capmonster.cloud use rel="nofollow sponsored noopener noreferrer".