How to Choose a CAPTCHA Solving Service for Parsing: Comparing 5 Options

What Types of CAPTCHAs Do These Services Solve?

We’ll focus on the most common ones: Google reCAPTCHA (v2, v3, Invisible, Enterprise), hCaptcha, Cloudflare Turnstile, Arkose Labs FunCaptcha, GeeTest, as well as classic graphical CAPTCHAs (text images, object selection, sliders, audio CAPTCHAs, etc.).

2Captcha

Over the years, the service has learned to handle nearly all CAPTCHA types found online. It supports every Google reCAPTCHA variant (standard v2, Invisible, Enterprise, behavioral v3), as well as hCaptcha, Arkose Labs FunCaptcha, GeeTest (including slider versions), complex puzzles (Yandex, VK, rotation, grid and click CAPTCHAs, etc.).

SolveCaptcha

A relatively new player with hybrid recognition technology. It supports all major CAPTCHA types: reCAPTCHA v2 (including Invisible and callback versions), reCAPTCHA v3 and Enterprise, hCaptcha, FunCaptcha (Arkose Labs), Cloudflare Turnstile, GeeTest, and more. Coverage is on par with industry leaders.

CapMonster

An AI-based service that solves modern CAPTCHAs using machine learning. It supports popular CAPTCHA types: Google reCAPTCHA v2 (incl. Invisible) and v3 (Enterprise included), Cloudflare Turnstile, Cloudflare Bot Challenge (JavaScript), Arkose Labs (FunCaptcha), GeeTest, hCaptcha, Amazon WAF CAPTCHA, MTCaptcha, Yandex CAPTCHAs, and others.

NoCaptchaAI

Specializes in visual CAPTCHAs. Handles Google reCAPTCHA v2, hCaptcha, and standard text-image CAPTCHAs. Essentially, it focuses on CAPTCHAs solvable via computer vision: object recognition, image classification, and simple text puzzles.

9kw.eu

A crowdsourced platform where users solve CAPTCHAs for each other. It can handle almost any CAPTCHA a human can solve: standard text-image CAPTCHAs, Google reCAPTCHA v2, hCaptcha, FunCaptcha, and more.

Which CAPTCHA Solving Service Is Faster and More Accurate?

Performance is measured by accuracy (percentage of correctly solved CAPTCHAs) and latency (time to solve CAPTCHAs).

2Captcha

Provides close to 99% success rate if repeated attempts are allowed, thanks to human participation. In ~1–5% of cases the first attempt may be incorrect, but you can resend the CAPTCHA for re-solving (free of charge). In general, 2Captcha and similar manual CAPTCHA recognition services can solve any CAPTCHA — it’s only a matter of time.

As for speed: on simple tasks (text CAPTCHAs, images) the answer usually comes in 5–15 seconds, on more complex ones like reCAPTCHA, in the range of 10–30 seconds, rarely longer than a minute. During peak loads, delays are possible, but overall 2Captcha generally delivers within 10–20s for popular CAPTCHAs.

CapMonster

Thanks to full automation, it demonstrates record-breaking solving speeds, up to 1000 CAPTCHAs per minute (i.e. <1 s per CAPTCHA) under ideal conditions. In practice, reCAPTCHA v2/v3 and Turnstile are solved in about 1–3 seconds. Recognition accuracy is about 95–99% (99% for reCAPTCHA v2/v3, 97–98% for some complex Enterprise CAPTCHAs). In case of a repeated request (when a CAPTCHA was initially solved incorrectly), you’ll have to pay for each solution, both correct and incorrect.

SolveCaptcha

The hybrid model provides a speed advantage. SolveCaptcha, all else being equal, turns out to be the fastest on popular types of CAPTCHAs due to AI optimizations on simple stages. Simple images are solved in 2–5 seconds, while more complex CAPTCHAs (like multi-round reCAPTCHA) in about 10–20 seconds. Overall, SolveCaptcha often outpaces 2Captcha: average time for reCAPTCHA v2 ~13 seconds. Accuracy lies within 95–99%.

NoCaptchaAI

Specializing in AI, it shows decent speed on supported CAPTCHA types. NoCaptchaAI solves a single image in ~0.2–0.5s. A full CAPTCHA (a series of reCAPTCHA images) is solved in a few seconds, but still faster than a human would. Yes, the service is very fast and cheap, but can make mistakes: claimed accuracy is 99.9%, but in practice it’s in the 95–98% range. If the CAPTCHA is too complex (non-typical image, or multi-component), NoCaptchaAI may fail to solve it at all.

9kw.eu

Since its basis is human volunteers, speed varies greatly. Each standard CAPTCHA is solved in less than a minute. The simplest ones may be solved in 5–15 seconds. But during peak load or on complex CAPTCHAs the delay can stretch up to several minutes. The service motivates performers with bonuses for speed, so ideally simple requests get answered fairly quickly. ReCAPTCHA v2 and similar CAPTCHAs require more time, here the average time is 20–50 seconds. Accuracy at 9kw also depends on people: for simple text CAPTCHAs ~90–95%, complex visual CAPTCHAs may produce more errors. 9kw lags behind the major services.

How much CAPTCHA solving costs

The cost of solving depends on the type of CAPTCHA. Complex types (reCAPTCHA, hCaptcha, FunCaptcha) cost more, simple text ones are cheaper. Some services offer free quotas, packages, or bonuses.

2Captcha

From $0.5 to $1 per 1000 simple images (regular graphic CAPTCHAs). reCAPTCHA v2 and similar will cost you from $1 to $2.99 per 1000 solutions. The price range is due to dynamic pricing: with a surplus of tasks the rate increases to attract more workers. On average, one Google CAPTCHA costs $0.001-0.003.

As for other CAPTCHA types: for example, FunCaptcha (Arkose Labs) cost from $1.45 to $50 per 1000, since there can be extremely hard variants (interactive games, which are very time-consuming to solve manually). GeeTest, KeyCaptcha, etc. usually cost ~$2.99/1000. Grid and Click CAPTCHAs cost about $1.2/1000. Simple text is $0.5–$1 per 1000.

Payment is only charged for solved CAPTCHAs, unsolved ones are not charged (but you must send a notification to the service). Top-up is possible for any amount, starting with a couple of dollars. Multiple payment methods are supported, including cards, cryptocurrencies, e-money, and mobile payments.

SolveCaptcha

Google reCAPTCHA v2 costs $0.55 per 1000 tokens, reCAPTCHA v3 $0.80/1000. That’s about 2 times cheaper than 2Captcha (at average rate). Regular images cost $0.35/1000 (almost $0.00035 each). Turnstile, GeeTest, Amazon CAPTCHA around $0.8/1000. hCaptcha is more expensive: $1.9 per 1000 (probably due to complexity, though still cheaper than $2.99 on 2Captcha).

The most expensive item is FunCaptcha (Arkose): from $2.99 to $50/1000, depending on CAPTCHA type (simple ones cost ~$3, the most complex game-like ones cost up to $50). Overall, SolveCaptcha positions itself as a cheaper service than 2Captcha with comparable accuracy. Payment is post-factum for solved CAPTCHAs, no subscription fees.

CapMonster Cloud

Google reCAPTCHA v2 costs $0.60 per 1000 solutions. If you provide not the CAPTCHA itself, but reCAPTCHA images for recognition, the price is about $0.04 per 1000 images. (However, reCAPTCHA can include multiple images, so more correct is $0.60 per full token). reCAPTCHA v3 costs $0.90 per 1000 tokens. FunCaptcha (Arkose) and other complex CAPTCHAs: for example, Imperva/Incapsula — $2.00/1000, Cloudflare Turnstile — $1.30/1000, GeeTest — $1.20/1000. Simple image CAPTCHAs cost about $0.30/1000 (text CAPTCHAs).

The service works on a deposit model: you can top up the balance starting from $1, payment is charged for solutions. There is a bonus program: for large volumes a bonus of up to +15% to deposit is given.

NoCaptchaAI

The service provides 6000 solutions per month free for each user. Prices start from $0.14 per 1000 CAPTCHAs; this is the base price for recognizing one reCAPTCHA or hCaptcha image. Even if you consider that one full token may require several images, the final cost is still only a few cents. Payment is usually in the form of purchasing packages. Individual rates for large clients are possible.

9kw.eu

Billing is in credit points, with 1 standard CAPTCHA costing 10 credits. A user can either purchase credits or earn them by solving CAPTCHAs for others. Purchase price is 40,000 credits for 5 EUR, i.e. 1000 CAPTCHAs ≈ $1.38. This is the base cost for simple tasks. The rate for complex CAPTCHAs is 25 credits, and if proxy/pageurl are not specified (i.e. the service selects the environment itself) — 30 credits. Accordingly, 1000 reCAPTCHAs cost ~30k credits, that’s 3/4 of a 5 EUR package, i.e. ~3.75 EUR ≈ $4.1 per 1000.

Payment on 9kw often happens through barter: many don’t buy credits, but solve simple CAPTCHAs (getting +7 credits for each), thus building up balance.

API and Integration of CAPTCHA Solving Services

For a developer, ease of integration is very important: availability of an API, ready-made libraries, and examples. Let’s look at what the platforms offer:

2Captcha

The de facto industry standard. It has a simple HTTP API: you send a POST request with CAPTCHA parameters (for example, sitekey and URL for reCAPTCHA) and your API key, the service returns a task ID, and then you can get the result (solution) with a GET request. This protocol (2Captcha API) is supported by many clients and even by other services.

Officially, 2Captcha provides libraries and code samples for PHP, Python, C#, Java, JavaScript, Go, Ruby, and more; they are available on GitHub. In addition to the API method descriptions, the documentation includes FAQs, error explanations, and integration guides for popular tools (Selenium, etc.). A large community has formed around 2Captcha: ready-made solutions for common tasks are easy to find online.

SolveCaptcha

Compatible with 2Captcha. That is, if your code worked with 2Captcha, you can switch to SolveCaptcha by simply changing the URL and API key. This lowers the entry barrier when moving to a new service. In addition, SolveCaptcha publishes its own libraries for Python, Java, C#, C++, JavaScript, Ruby, PHP, and Go on GitHub.

The website features interactive request examples and responses for different CAPTCHAs. There are also ready-made integration examples with Selenium and Puppeteer for automated CAPTCHA solving in tests. The documentation is up-to-date, well-structured, listing all supported types and parameters.

CapMonster

Provides a modern API and official SDKs. Ready-made libraries are available for C#, Python, JavaScript, Go, PHP. The principles of operation are similar to 2Captcha: you need to send a task via an HTTP request (or via a library method) and periodically poll for the result. CapMonster supports the formats of third-party services; for example, it can emulate the 2Captcha API. This was done to simplify migration: you can switch to CapMonster Cloud with minimal code changes, simply replacing the URL with their endpoint (and, of course, the API key). The documentation describes both options: its own API and emulation of another.

NoCaptchaAI

Offers an HTTP API for sending CAPTCHA images or other data and receiving responses. The protocols differ somewhat from standard services: for example, to solve reCAPTCHA, you need to obtain the challenge images yourself (via a browser script) and send them one by one to NoCaptchaAI for recognition, receiving answers in return. After that, you submit these answers to the verification page yourself. In other words, the integration is lower-level: the service solves the subtask of recognition but does not handle the entire token acquisition process. SDKs or code samples are available. Private API instances are offered for enterprise clients — you can get a dedicated model server for your needs.

9kw.eu

The site has an API page with parameter descriptions, and plugins are available for popular programs: JDownloader, OCR4all, etc., as well as the 9kw client app, which simplifies participation in the system. You can integrate 9kw into your own scripts via HTTP requests. Since there are relatively few examples of integration with this service, you will need to read the 9kw FAQ/forum carefully. The 9kw API has several additional features: for example, you can specify who (by rating) should receive your task, what reward to set, and so on. This is flexible but complicates use. No ready-made SDKs for programming languages are provided.

Support and Stability of CAPTCHA Solving Services

Reliability includes uptime (server availability), quality of customer support, and factors such as geographic distribution. Let’s see what to expect:

2Captcha

The service has earned a reputation for being extremely stable. Reported uptime is ~99.9%; serious outages are rare. The server infrastructure is distributed to serve clients worldwide. If one node goes down, tasks are redirected to another one. Overall, 24/7 uptime is a top priority, since the service relies on the constant activity of workers. 2Captcha is known for responsive technical support. They offer a ticket system, email, and even community forums (CaptchaForum), plus official groups on social media.

CapMonster

CapMonster Cloud’s infrastructure is hosted in the cloud and scales with demand. The service runs without downtime, and solutions are delivered quickly and consistently. Reported uptime is 24/7. CapMonster also allows private servers: enterprise clients can get a dedicated channel, eliminating overload issues. In terms of geography, its servers are located to ensure fast interaction with target sites (with proxy support, including your own if needed). ZennoLab provides support via tickets and a forum. Support usually responds within 24 hours.

SolveCaptcha

The architecture is relatively simple (the service acts as a broker between clients, its own neural network, and a pool of decoders). This scheme scales well horizontally, so SolveCaptcha has no bottlenecks: as the number of tasks grows, more workers or ML infrastructure can be added. SolveCaptcha can handle large volumes without issues. Customer support works 24/7 and usually responds within an hour. Tickets/email are available, as well as communication through Telegram.

NoCaptchaAI

Claims 99.9% uptime and fast response. NoCaptchaAI offers private APIs and even offline solutions (a model container) for companies. This means that if you are concerned about the stability of the public service, you can deploy your own instance and not depend on external uptime at all. Regular users have access to the public cloud API. NoCaptchaAI support is provided via email/chat. The team is small but tries to respond quickly (especially to paying customers).

9kw.eu

Uptime is decent, although occasionally complaints appear on the forum about slowdowns or server updates during which the service was temporarily unavailable. Since 9kw is not a commercial giant but rather a community project, reliance on a single server/admin is somewhat higher. Support is available in the form of an FAQ section, a contact form, and essentially through the community itself: some questions are discussed on niche forums (for example, blackhatworld, where people share experiences with 9kw). Therefore, response times may not be as fast as with large companies.

Interface and Solutions: What CAPTCHA Solving Services Also Offer

By “interface” we mean user dashboards, available utilities, and overall convenience besides the API.

Personal accounts (web interface)

All services have a website where you register, get an API key, top up your balance, and view statistics.

2Captcha

The dashboard is extremely simple: it shows balance, transaction history, auto-response settings (in case of downtime), and lets you generate keys. Nothing extra, minimalist, but all essentials are there.

SolveCaptcha

Modern SaaS style: a clean and informative dashboard. You can set the maximum bid per CAPTCHA, view load graphs, and even download code samples right there. The interface is intuitive.

CapMonster

Integrated into the ZennoLab Dashboard. After registration, you land on a panel showing remaining credits, with options to top up your balance and view statistics on solved CAPTCHAs. There are also settings sections, such as proxy binding, API key management, and the affiliate program. Overall, the interface is user-friendly, fully on par with SolveCaptcha.

NoCaptchaAI

The web interface is minimal. The main page offers you to get a key and read the documentation. Since the focus is on the API, apart from usage statistics and payment binding, there’s little else. Which, however, is all that’s needed.

9kw.eu

The site looks old-fashioned. The interface is more functional than esthetically pleasing. Statistics are available but presented in a spartan way. For a user familiar with 2010s web, everything is understandable; for a newcomer, it may seem confusing (many technical terms, some menu items in German, though there is an English translation). Nevertheless, all essentials are present: API key, points counter, settings such as “which CAPTCHAs I’m willing to solve,” etc.

Browser Extensions for CAPTCHA Solving Without Manual Input

2Captcha

Has an official Chrome/Firefox plugin. It allows CAPTCHAs to be solved automatically during normal browsing: you enter your API key in the extension settings, and when a CAPTCHA appears, it sends it to 2Captcha and inserts the answer. You can set it to work fully automatically or only on click, depending on your preference.

SolveCaptcha

Similarly offers an extension. The interface is very simple: API key and on/off toggle. SolveCaptcha positions it as a solver with minimal user involvement.

CapMonster

Has extensions for Chrome and Firefox. They are integrated into the ZennoLab ecosystem but work the same way for end users: you enter the key and CAPTCHAs on pages are solved automatically. The CapMonster plugin, in addition to inserting answers, can emulate certain delays, block unwanted sites (ignore list), i.e., it has settings for more “human-like” behavior.

NoCaptchaAI

There’s a Chrome extension and a Userscript. The extension basically performs the same function: when encountering a CAPTCHA, it sends images to the NoCaptchaAI server, receives solutions, and automatically clicks/enters the answer. Users hardly need to do anything. The Userscript is for advanced users who want to embed CAPTCHA solving into their custom scripts (Tampermonkey, etc.).

9kw.eu

Has no extensions. However, there are different integration options: for example, 9kw Client, a utility that can monitor your clipboard or browser and send CAPTCHAs for solving, or connect to other applications as a module. Overall, 9kw is oriented more toward desktop application integration (plugins for downloaders, bots, etc.) than manual use.

CLI and Additional Tools — for Extra Convenience in Solving CAPTCHAs

2Captcha has unofficial CLI scripts (e.g., on npm — 2CAPTCHA-cli), but they’re not really needed, since HTTP API is sufficient.

CapMonster and SolveCaptcha offer no separate CLI, but their APIs are easily accessible via cURL scripts.

9kw client app can be considered a desktop CLI: it is written in Java, works as a console or background app, and allows you to configure automated participation.

Additional Features — Hidden Advantages of CAPTCHA Solving Services

Some services let you manage priorities and bids. For example, with SolveCaptcha you can set the maximum bid per 1000 CAPTCHAs if you want faster solving by increasing the reward.

2Captcha has a pingback parameter for callbacks and auto-cancellation of long tasks, plus a referral program (up to 15% of your referrals’ spending).

CapMonster provides a referral program (partners earn up to 30% of referred users’ spending) and a monitoring API — you can track remaining balance and load via their endpoints.

9kw has a rating system for solvers: you can choose to send tasks only to experienced ones (though it costs more). There are also gamified bonuses for solving speed, etc.

Pros and Cons of CAPTCHA Solving Services

2Captcha

Pros:

• Maximum coverage of CAPTCHA types. Supports virtually everything, including rare and new ones.

• Reliability and experience. More than 10 years on the market, polished infrastructure, almost no downtime.

• Guaranteed solving. Real workers will handle what no algorithm can (success ~99% with retries).

• Community and documentation. Lots of ready-made solutions, tutorials.

• Easy integration. Clear API, official libraries for all languages.

• Flexible payment. Top-ups in small amounts, many methods; you only pay for solved CAPTCHAs.

Cons:

• Speed depends on humans. Sometimes you have to wait 20–30+ seconds, especially on difficult CAPTCHAs.

• Dynamic pricing. During peak load, the cost per 1000 CAPTCHAs may nearly triple.

• No free mode. Testing is only possible with a small paid deposit (though $1 gives ~1000 CAPTCHAs).

CapMonster Cloud

Pros:

• Very high speed. Solutions arrive in seconds, at scale (up to 1000/min).

• Low price. Several times cheaper than human-based services (reCAPTCHA ~$0.60 vs $2), proxies included.

• Broad CAPTCHA support. AI models trained on popular services (Google, Cloudflare, Arkose, etc.).

• Scalability. No need to wait for workers — capacity scales with load, suited for large projects.

• Good integration options. Official SDKs, 2Captcha API compatibility, browser extensions.

• Extra options for anti-detection. Delay settings, click emulation, proxy support for imitating target IP.

Cons:

• AI limitations. On entirely new or unusual CAPTCHAs (especially those requiring contextual understanding), it may fail.

• Risk of detection. Although CapMonster emulates humans, massive use may be detected by site anti-bot systems.

• Payment despite errors. Charges only for solved CAPTCHAs, but if solved incorrectly, time is still lost. (On very low success rate types — e.g., complex Arkose — CapMonster simply won’t take the task or return an error).

SolveCaptcha

Pros:

• Combination of speed and reliability. Solves simple CAPTCHAs quickly with AI, complex ones with human help.

• Full range of CAPTCHAs. Supports all known types (Google, hCaptcha, Arkose, GeeTest, etc.).

• Cheaper than competitors. Lower rates than purely human-based services.

• Compatible with 2Captcha. Switching to SolveCaptcha doesn’t require code rewrite (API protocol is the same).

• Good UX and support. Modern dashboard with graphs and code samples, 24/7 support, quick response (usually <1 hour).

• Extensions and libraries available. Easy integration, plus browser plugin.

Cons:

• Smaller community. Fewer forum mentions, ready-made “recipes” are less common (though documentation covers everything).

• Mixed architecture. Rarely, delays may occur when switching between AI and humans.

• Limited payment methods. Currently only cards and crypto are supported.

NoCaptchaAI

Pros:

• Fastest. Fully automated, solutions may arrive in fractions of a second.

• Extremely low cost. $0.14 per 1000, essentially negligible.

• No queues. No dependence on human factor: the system processes many tasks in parallel (as long as computing power is sufficient).

• Developer-oriented. Offers custom solutions: models can be trained for your specific task (for an extra fee).

Cons:

• Limited scope. Not all CAPTCHA types are supported, mainly visual ones.

• No 100% guarantees. If the model fails to recognize a CAPTCHA, you can retry, but there’s no human help available.

• Integration is more complex. You need to handle the process of retrieving images and sending them to the API manually, or rely on the ready-made extension (which isn’t suitable for server-side use).

9kw.eu

Pros:

• Can be used for free. By solving others’ CAPTCHAs, you earn credits to spend on your own.

• Decent purchase prices. ~$1.3–1.4 per 1000 normal CAPTCHAs, ~$4 per 1000 reCAPTCHAs.

• Supports all CAPTCHAs solvable by humans. No type restrictions.

• Flexible settings. You can increase reward per CAPTCHA for faster solving, prioritize solvers, and exclude certain CAPTCHA types.

• Community transparency. Statistics are visible (number of users online, new users), public solver ratings are present.

Cons:

• Low speed and unpredictability. Solving time depends heavily on time of day and load. No guaranteed 24/7 or fast response.

• Less accurate quality control. Although feedback exists, solvers are the general public with varying skills.

• Harder to use. Outdated interface, less popular API.

• Limited resources. The project runs on community enthusiasm.

• Virtually no support. No dedicated 24/7 support team.

• No SLA guarantees. Unlike commercial services, 9kw does not promise uptime or refunds for errors.

Comparison Table of CAPTCHA Solving Services

Conclusion and Recommendations

If your top priority is universality and reliability in solving any CAPTCHA — for example, in complex testing or cases where failing a CAPTCHA is not an option — choose 2Captcha or the hybrid SolveCaptcha.

2Captcha is the “gold standard”: not the fastest, but you are almost guaranteed to bypass any obstacle. SolveCaptcha, meanwhile, adds speed on typical tasks while remaining just as reliable thanks to human help. Both services have broad community support and plenty of integration examples, so they involve the least inconvenience.

If you engage in bulk parsing or other high-load scenarios where you need to solve thousands of CAPTCHAs quickly and cheaply, look at CapMonster Cloud. This service provides the lowest solving time (AI doesn’t need breaks) and the lowest cost, which saves your budget significantly. It’s perfect for scenarios where every second counts: scraping sites with protection, automating mass account registrations, etc. CapMonster is specifically built for scale: it can handle high traffic without increasing delays.

If you have a minimal budget project or your own script where you’re not ready to spend much on CAPTCHAs, the best choice is NoCaptchaAI (paired, e.g., with 9kw). NoCaptchaAI gives you a free quota and ultra-low prices beyond that. You can solve lots of CAPTCHAs by paying just a few cents. But keep in mind the type limitations: if suddenly you face a CAPTCHA the AI cannot handle, you can fall back on 2Captcha or 9kw for backup. NoCaptchaAI combined with a backup human-based CAPTCHA solver is the optimal combination for an ultra-budget approach.

The choice of CAPTCHA solving service ultimately depends on your priorities: you need to balance speed, reliability, budget, and convenience. We hope that this review will help you make an informed decision about which CAPTCHA solving service best fits your automation tasks.