CAPTCHA protocols are designed to tell bots from humans, yet in the worlds of automation and testing there is often a need to bypass them. Dedicated CAPTCHA‑solving services take over this task, combining algorithms with human labor.

In this article we present an in‑depth comparison of four popular platforms — 2Captcha, SolveCaptcha, DeathByCaptcha, and AntiCaptcha. We will examine not only pricing and the types of CAPTCHAs supported, but also internal architecture, API integrations, speed and stability, plus the quirks of using each service.

The technical community will find a deep dive here — from API and SDK structure to real‑world use cases. Below you will see a table comparing key characteristics, lists of pros and cons, and a discussion of which service best fits particular automation tasks.

An Overview of the Main CAPTCHA Bypass Services We Compare

Before we get into the details, let’s briefly introduce the participants — what they are and what they are known for on the market:

2Captcha — One of the oldest and largest anti‑CAPTCHA services, in operation for many years. CAPTCHAs are solved manually by a huge distributed workforce around the globe for a small fee. This virtually guarantees a solution to any CAPTCHA, albeit with varying wait times. 2Captcha supports an incredibly wide range of CAPTCHA types — from classic text puzzles and multiple versions of reCAPTCHA to Yandex CAPTCHA, VK CAPTCHA, image‑rotation puzzles, and many more. The service offers a convenient API and its own browser plug‑ins.

SolveCaptcha — A relatively new player (launched in 2024/2025) with an ambitious hybrid technology. It positions itself as a “powerful and fast” service for automatic solving of nearly all CAPTCHA types. Unlike traditional competitors, SolveCaptcha focuses on a machine‑learning‑plus‑human approach: simple cases (distorted text, basic images) are handled by a neural network in 2–5 seconds, while more complex multi‑part puzzles are immediately routed to humans to guarantee success. The goal is speed without sacrificing reliability. The service supplies a cloud API (compatible with the 2Captcha scheme) and its own Chrome/Chromium extension. Declared support covers Google reCAPTCHA (v2, Invisible, v3, Enterprise) and linked checks (site‑key callbacks), hCaptcha, Arkose Labs FunCaptcha, Cloudflare Turnstile, GeeTest, and others — practically everything, with a claimed success rate of 95‑99 %.

AntiCaptcha (AntiGate) — Another market veteran (since 2007), branding itself as the most accurate, inexpensive, and fastest service. Like 2Captcha, AntiCaptcha relies mainly on live human solvers rather than AI. Over the years it has tuned its infrastructure for high throughput and uptime. It supports virtually every CAPTCHA type: Google reCAPTCHA v2/v3 (including Enterprise), tricky puzzles such as GeeTest and Cloudflare Turnstile, and so on. Integrations include extensions for all major browsers (Chrome, Firefox, Safari), ready‑made modules for iMacros, Puppeteer, and Selenium, plus a JSON API.

DeathByCaptcha (DBC) — An international service operating for over 15 years. DBC was one of the first to apply a hybrid approach: OCR algorithms combined with a 24/7 human decoding team (though in practice they often routed CAPTCHAs through 2Captcha). Simple text CAPTCHAs are recognized automatically within seconds; tougher ones go to manual entry. This yields about 90% accuracy on easy CAPTCHAs on the first attempt and up to 99% with human verification. DBC also handles diverse tasks: ordinary graphic CAPTCHAs, reCAPTCHA (including Invisible v2 and v3), audio CAPTCHAs for the visually impaired, hCaptcha, FunCaptcha (Arkose Labs), GeeTest (v3/v4), and even niche systems such as CyberSiara or FriendlyCaptcha. API clients exist for popular languages (Python, Java, C#, etc.) and are compatible with other service protocols (e.g., AntiCaptcha API), easing migration. Browser extensions are available for Chrome and Firefox.

Supported CAPTCHA Types - What Each Service Can Solve

The value of any CAPTCHA platform largely depends on how many different puzzles it can handle.

2Captcha has learned to bypass practically anything found online: every variety of Google reCAPTCHA (classic picture‑based v2, Invisible v2, Enterprise, behavioral v3), plus hCaptcha, FunCaptcha (Arkose Labs), GeeTest puzzles (including slider versions), KeyCaptcha, grid CAPTCHAs, click‑CAPTCHAs, image rotation, sliders, and more. It also supports Russia‑specific CAPTCHAs from Yandex, VK, etc. When a new CAPTCHA appears, 2Captcha typically adds support quickly thanks to its vast community.

AntiCaptcha matches this breadth. It touts itself as solving “CAPTCHAs of any kind” and indeed covers all popular types: reCAPTCHA v2/v3 (Invisible and Enterprise), hCaptcha and hCaptcha Enterprise, Cloudflare Turnstile, GeeTest (standard and v4), FunCaptcha, and other exotic variants. AntiCaptcha also supports Custom Tasks — you can describe an arbitrary job via their API (e.g., perform a sequence of actions on a site) and their workers will do it. This goes beyond classical CAPTCHA solving, making AntiCaptcha a versatile anti‑bot tool.

DeathByCaptcha likewise covers the essentials, although historically it focused on graphic text CAPTCHAs. Today DBC claims support for Google reCAPTCHA v2/v3 (including Invisible), hCaptcha, FunCaptcha, GeeTest v3/v4, Cloudflare Turnstile, plus less common systems such as KeyCaptcha, Capy Puzzle, Lemin, Amazon WAF CAPTCHA, FriendlyCaptcha, etc. Notably, DBC can solve audio CAPTCHAs (e.g., audio reCAPTCHA) by sending the sound file to either a speech‑recognition engine or a human listener.

SolveCaptcha was designed from the start as a universal service, so its list is no less extensive. Documentation lists all major categories: reCAPTCHA v2/v3 (classic, Invisible, Enterprise, callback modes), hCaptcha, FunCaptcha, Cloudflare Turnstile, GeeTest (including the new version 4), Amazon WAF CAPTCHAs, sliders, text riddles, arithmetic challenges, and more. SolveCaptcha claims a 95–99% success rate, on par with competitors.

In short, all four services cover the mainstream CAPTCHAs encountered on websites in 2025. Differences lie in edge capabilities: AntiCaptcha offers arbitrary tasks and click‑coordinate output, 2Captcha is famous for rare and local (Russian) CAPTCHAs, DeathByCaptcha handles audio and cross‑service API compatibility, while SolveCaptcha aims for full coverage with automatic type detection.

API & Integration: How to Add CAPTCHA Solving Service into Your Project

A key selection criterion is integration simplicity. All four platforms provide developer APIs, yet formats and tooling vary.

2Captcha API – A CAPTCHA‑Solving Workhorse

2Captcha offers a straightforward HTTP API, historically compatible with the old antigate protocol. Interaction follows a two‑request model: send the CAPTCHA via 2captcha.com/in.php, receive a task ID, then poll 2captcha.com/res.php for the result. Parameters differ by CAPTCHA type (e.g., method=userrecaptcha with googlekey and pageurl for reCAPTCHA v2). Documentation includes examples in many languages, and official libraries exist for Python, Java, C++, PHP, Node.js, and more. A callback (pingback) mechanism lets you supply a URL that 2Captcha will POST to when the answer is ready, removing the need to poll. Browser extensions and npm packages round out a rich ecosystem.

SolveCaptcha API – Newcomer CAPTCHA Bypass Service with Familiar Endpoints

SolveCaptcha strives to be developer‑friendly. Its API is fully compatible with 2Captcha (/in.php, /res.php), so migrating often means only swapping the domain and API key. Libraries for eight languages are hosted on GitHub. Notable is a settings panel where you can cap the maximum price per CAPTCHA, letting the system decide whether to use AI or a human. A Manifest V3 Chrome extension works interactively or in headless mode. SolveCaptcha supports error reporting and automatic refunds for incorrect solutions.

AntiCaptcha API – Task‑Based JSON Flexibility CAPTCHA Solve Service

AntiCaptcha provides a modern JSON API built on task objects. You call createTask with parameters (e.g., NoCaptchaTaskProxyless, ImageToTextTask), receive a taskId, then poll getTaskResult. Official SDKs exist for multiple languages. For backward compatibility, AntiCaptcha still supports the old antigate format. A bonus: no limit on parallel threads - you may submit unlimited simultaneous tasks. Browser plug‑ins are available for Chrome, Firefox, and Safari, with detailed guides for Selenium, Puppeteer, and iMacros.

DeathByCaptcha API – CAPTCHA Bypass Service where Compatibility First

DBC supplies several APIs. Besides its own protocol (including socket/HTTP binary upload), it supports standard HTTP polling similar to 2Captcha and even speaks AntiCaptcha and DeCaptcher dialects, easing code reuse. Official clients exist for Python, Java, C#, and PHP, plus iMacros. Browser extensions arrived later but now work like those of rivals.

All four are developer‑friendly: 2Captcha and SolveCaptcha win on utter simplicity; AntiCaptcha on flexibility and documentation (with a slightly steeper JSON learning curve); DBC on protocol compatibility.

Speed & Throughput - What CAPTCHA Solve Service Is the Fastest?

Speed matters, especially at scale. It depends on CAPTCHA complexity, server load, and the solution approach (human vs. hybrid).

Simple text CAPTCHAs

SolveCaptcha: 3–5 s via neural net.
DeathByCaptcha: ~9 s (OCR first, human fallback).
2Captcha: 7–15 s when worker supply is high (10–40 s overall).
AntiCaptcha: typically 13–20 s, sometimes claimed “~5 s” for images.

Complex CAPTCHAs (e.g., Google reCAPTCHA v2)

SolveCaptcha: averages 4.5 s per independent benchmarks (service claims 2 s ideal).
AntiCaptcha: 10–20 s for v2; similar for v3.
2Captcha: from 1–3 s in rare best cases to ~20 s average, 60 s worst‑case.
DeathByCaptcha: 15–30 s (human).
FunCaptcha: 48 s (SolveCaptcha) vs. 55 s (2Captcha).

Parallelism & Scaling

AntiCaptcha: no artificial thread limit; handles thousands per minute.
2Captcha: huge workforce, though burst loads may slow individual tasks.
SolveCaptcha: publishes minute quotas (e.g., 12 k images/min, 11 k reCAPTCHA/min).
DeathByCaptcha: can raise prices in peak hours to manage load.

Parallelism and Scalability - Can You Parallelize Hundreds of Threads Through a CAPTCHA‑Solving Service?

If you need to solve hundreds of CAPTCHAs at the same time, the service’s ability to handle many requests in parallel is crucial. Here AntiCaptcha is the clear leader - they do not limit parallel threads, and their infrastructure can handle very high volume (up to 1,000 CAPTCHAs per minute for some types). 2Captcha is also capable of solving tasks in parallel - their thousands of workers pull tasks from a shared queue. However, if you suddenly submit, say, 500 tasks, the time to solve each one may increase since they all go into the same queue (there are no artificial limits on parallelism, though). SolveCaptcha explicitly states per‑type minute‑by‑minute free capacity - for example, up to 12,000 images per minute or about 11,000 reCAPTCHA v2 per minute. These figures indicate the service is designed for large‑scale loads and has enough solvers and servers (but if you send more than the stated figures, you will likely have to pay extra; I have never had such volumes and cannot explicitly confirm or deny this). DeathByCaptcha, despite its longevity, can sag under heavy loads. They even provide for surge pricing at peak times (something similar exists at AntiCaptcha and 2Captcha as well, but is less pronounced due to their larger workforces) - in effect, when there are too many tasks, DBC raises prices (by 10–20 %), which indirectly throttles the flow. Still, this ensures that tasks will be taken up. So for high‑volume projects, AntiCaptcha or SolveCaptcha look preferable (maximum parallelism without markups); 2Captcha is a universal option (many workers, but there can be small delays at night or during spikes); DBC will also cope, but may be slightly more expensive at peak times.

Accuracy and Reliability of Solutions Across CAPTCHA Services

All four services claim near‑maximal accuracy - and that’s not far from the truth. Wherever humans are involved, correctness is typically 95–99 %. Simple CAPTCHAs (text from an image) are usually solved correctly on the first try. If an error occurs (the text was misread or a token didn’t work), you can file a complaint: 2Captcha, SolveCaptcha, and DeathByCaptcha allow you to report an incorrect answer, and you don’t pay for it. On very complex tasks (for example, particularly tricky CAPTCHAs or brand‑new algorithmic checks) any service may sometimes fail or take longer than usual to find a solution. However, over the years 2Captcha and AntiCaptcha have accumulated huge experience and knowledge bases, so their reliability is as high as it gets. SolveCaptcha, although new, uses the same model (human factor + proven algorithms), so there should not be serious quality issues.

Stability of Operation. Here we mean service uptime and API availability. All projects declare 24/7/365 operation. AntiCaptcha boasts 99.99 % uptime since 2007 - in other words, virtually no downtime. 2Captcha is also very rarely unavailable, given its popularity. DeathByCaptcha has had occasional technical pauses in the past but is generally stable. SolveCaptcha, as a newcomer, has not yet shown serious outages; moreover, its architecture is simple - in essence, a task broker between customers and solvers.

Thus, on simple CAPTCHAs all services return answers quickly (5–15 seconds); on complex CAPTCHAs the time is usually 10–40 seconds, and in rare cases longer (up to a minute). The fastest on most types appears to be SolveCaptcha thanks to AI optimizations. AntiCaptcha and 2Captcha are comparable, typically fitting into 10–20 seconds for popular CAPTCHAs. DeathByCaptcha is slightly slower on average (15+ seconds), but the difference is small. If minimal latency is critical, you should test the specific CAPTCHA type on each service - sometimes a 5‑second difference can be crucial for certain tasks. As for performance under load, AntiCaptcha and SolveCaptcha will scale without issues; 2Captcha will also handle a large stream; DBC may require slightly higher costs at peak load (so to speak - will cope for an additional fee).

User Experience and Developer Support

Beyond technical characteristics, convenience matters - both for developers and for end users if you are using a browser plug‑in. Let’s consider several UX aspects: interfaces and dashboards, documentation, available tooling, and customer support plus the services’ communities.

Interfaces and Dashboards - An Unobvious but Significant Factor

All services provide a web interface where you register, obtain an API key, top up your balance, and view statistics. 2Captcha offers a fairly simple dashboard without frills: balance, spending history, auto‑response settings, etc. AntiCaptcha provides a slightly more advanced dashboard with detailed solution logs, CAPTCHA‑type settings, and even video integration guides. SolveCaptcha, being a modern service, has a clean SaaS‑style interface: you can set maximum bids, view load graphs, and download code samples. DeathByCaptcha provides a basic dashboard; its advantage is not UI but stable operation (though there are already some questions). Overall, the dashboard UX of AntiCaptcha and SolveCaptcha can be considered the most beginner‑friendly - there are tips and onboarding materials. 2Captcha opts for minimalism: nothing extra, just what you need to work.

Documentation and Learning Materials - Let the Service Show You How to Solve CAPTCHAs

Here 2Captcha and AntiCaptcha lead - their documentation is very detailed, with sample requests and responses, FAQs, and breakdowns of common mistakes. Both also have GitHub repositories with official libraries. Due to 2Captcha’s popularity, there are numerous articles and forum threads with ready‑made solutions for typical problems. In other words, knowledge about 2Captcha is widespread, which is also a plus - your question may already be solved out there (I myself have browsed the search results and the balance here is clearly in 2Captcha’s favor, no doubt). SolveCaptcha has also invested in documentation: the site provides an API section with interactive examples, a list of all CAPTCHA types and parameters, and guides for Selenium/Puppeteer. DeathByCaptcha’s documentation is comparatively modest, but you can find guides online - especially in English - on how to work with DBC. Thanks to API compatibility, you can reuse other services’ instructions (for example, an AntiCaptcha API guide will work for DBC with minimal changes). For Russian‑speaking developers, a potential hurdle is that DBC is presented in English, whereas its competitors offer Russian.

Customer Support - We Don’t Work with a**holes!

All services have support teams, but responsiveness varies. 2Captcha is known for responsive support - they have a ticket system and email support, though they try to funnel everyone into tickets. There is also an active 2Captcha workers’ forum/community (CaptchaForum) where you can get indirect help, plus groups on VK and the “forbidden” social network. AntiCaptcha has something similar; however, stating it doesn’t mean support is always top‑tier. The service has issues with responsiveness and constructive handling of negative feedback or complaints; in my experience alone, I’ve met two average AntiCaptcha users who were dissatisfied with communication (or the lack thereof). It can be summed up like this: “If you have problems, they’re your problems - don’t give us a hard time, or we’ll just block you.” Maybe things have changed, but the aftertaste remains. SolveCaptcha provides 24/7 tech support; being new, they are keen on customer loyalty, so they respond quickly (usually within an hour via email or ticket) + they have Telegram where you can reach them. DeathByCaptcha offers support via tickets and email, but it’s not 24/7 (typically unavailable outside business hours). This can be inconvenient for international users across different time zones.

Additional Features and Conveniences of CAPTCHA‑Solving Services

It’s worth noting that 2Captcha offer a mobile app for workers (Android). This is relevant to those who solve CAPTCHAs for income rather than to customers of the service - but it indirectly affects customers: the mobile app gives 2Captcha a very large pool of workers (including students, homemakers, etc.), which improves speed and, more importantly, stability at different times of day. AntiCaptcha also has an army of workers; some use their own app or the web interface - hence the fast response.

For developers, testing and debugging convenience matters. All services (except perhaps DBC) have testing or demo modes: AntiCaptcha allows you to solve several CAPTCHAs for free to get acquainted (implicitly via their UI); SolveCaptcha can provide promo credits. DBC offers a trial for a certain number of CAPTCHAs upon request. 2Captcha has no free mode, but on request they may provide a small promo code to top up your balance. Code samples are also valuable for developers: here SolveCaptcha and 2Captcha are ahead, with ready‑made recipes on GitHub.

Browser Extensions - What Each CAPTCHA‑Solving Service Offers

If you plan to use an extension (rather than the API directly) - for personal browsing or automation in a real browser - note the nuances. 2Captcha and SolveCaptcha extensions are quite similar in interface: after installation, you enter your API key and it works automatically. 2Captcha has an option to solve CAPTCHAs fully automatically or on demand (useful if you don’t want every CAPTCHA sent to the service). SolveCaptcha strives to be as unobtrusive as possible - the user may never see pop‑ups; the CAPTCHA is solved in the background. The AntiCaptcha (Antigate) plug‑in also supports background operation.

Does It All Come Down to Money?

Top‑ups and pricing are another key aspect. All four services support a variety of payment methods: bank cards, electronic money, cryptocurrencies (especially Bitcoin, USDT), and some support PayPal. 2Captcha even supports Qiwi, mobile balance, etc., for Russian‑speaking users. AntiCaptcha accepts crypto, WebMoney, UnionPay, and other less common methods. DeathByCaptcha accepts many payment options and offers discounts when paying with cryptocurrency and for bulk orders. SolveCaptcha supports cards or crypto - nothing fancy here yet. As for pricing models: all use pay‑as‑you‑go (pay per solved CAPTCHA). AntiCaptcha is the only one that also offers a subscription - a fixed monthly allotment, which can be convenient if your CAPTCHA volume is predictable. In terms of pricing transparency, all services are similar: they charge only for correctly solved CAPTCHAs (except DBC with its peak‑time surcharge). Refunds of unused balance, as mentioned, are not a problem.

Communities and the Competitive Landscape of CAPTCHA Recognition Services

A community has formed around CAPTCHA‑solving services. 2Captcha has numerous topics across forums, as do AntiCaptcha and DBC (fewer mentions, but they are there). SolveCaptcha is still building its audience but has repeatedly appeared in reviews and rankings as a promising solution. Overall, the reputation of all four in the professional community is fairly high: 2Captcha is valued for reliability and experience, AntiCaptcha for power and rich functionality, DBC for stability and long‑term market presence, and SolveCaptcha for innovation and speed.

Comparison Table of CAPTCHA Bypass Services (Key Metrics)

Service	Solution Approach	Cost (approx.)	Avg. Speed	Supported CAPTCHAs	API & Tools	Distinguishing Features
2Captcha	Manual (crowd)	$1‑3 / 1 000 reCAPTCHA v2/v3; $0.5 / 1 000 images	15‑30 s (reCAPTCHA), <10 s simple	Almost all, incl. Yandex, VK	HTTP (polling + webhook), libs for major languages, browser add‑ons	Largest workforce, Android app for solvers, huge community
SolveCaptcha	Hybrid ML + human	$0.5 / 1 000 images; $0.55 / 1 000 reCAPTCHA v2; from $2.99 / 1 000 FunCaptcha	8‑13 s (v2); 2‑3 s (v3); 3‑5 s OCR	reCAPTCHA, hCaptcha, FunCaptcha, Turnstile, GeeTest, etc.	2Captcha‑style HTTP, libs (8 langs), webhook, Chrome add‑on	New (2024), top speed via AI, full 2Captcha compatibility, 24/7 support
AntiCaptcha	Manual (crowd)	~$1 / 1 000 reCAPTCHA v2; $0.5 / 1 000 images	15‑25 s (v2); 5‑15 s simple	All major + custom tasks	JSON task API, unlimited threads, browser plug‑ins	Since 2007, 99.99 % uptime, subscription option, no bad‑answer refunds
DeathByCaptcha	OCR + human	$1‑3 / 1 000; surge pricing peaks	15‑35 s (v2); 9 s simple	Wide range incl. audio	HTTP, compatible with AntiCaptcha/DeCaptcher, browser add‑ons	15+ years, audio CAPTCHAs, crypto bulk discounts

CAPTCHA‑solving platforms have evolved from simple “manual farms” into sophisticated ecosystems blending human intelligence and algorithms. Our comparison of 2Captcha, SolveCaptcha, AntiCaptcha, and DeathByCaptcha shows a similar baseline - affordable solving with high accuracy via clear APIs - but subtle differences can be decisive:

2Captcha is the seasoned all‑rounder with unmatched breadth and community support.
SolveCaptcha offers cutting‑edge speed and developer convenience; ideal where every second counts.
AntiCaptcha suits enterprise‑scale loads and complex tasks, backed by mature infrastructure.
DeathByCaptcha remains relevant for hybrid workflows and legacy compatibility.

Armed with this knowledge, developers can choose the perfect tool - or a mix of tools - to banish those pesky “I’m not a robot” challenges and keep automation flowing, empowered by everything from neural networks to thousands of real people solving CAPTCHAs in real time.

Comparison of CAPTCHA‑Solving Services: A Peek Under the Hood and a Look at the Numbers