If you ever encountered a Captcha, you would know the sole purpose of it. This is a mechanism that a website resorts to in order to verify that you are a legitimate user and not a machine. And this is not a big deal if you just need to log in once and forget about it. But what if you need to scrape some business-related data from a website and the Captcha is on your way?
To help you handle these kinds of hurdles, developers came up with captcha breaking tools called Captcha solvers, presented as add-ons, browser extensions and APIs.
In this article, we reviewed the top Captcha solvers in the market to give you a better understanding of their functionality and key features.
Introduction to Captcha Solving Services
Captcha Solving Services are a class of online tools and platforms designed to bypass Captcha restrictions. A Captcha Solver is a script or software that allows you to employ state-of-the-art OCR (Optical Character Recognition) techniques or engage humans in solving Captchas to provide you with flawless execution of your scraping missions.
Though Captchas work as a reliable fighter against spam and hacking, they unintentionally envenom life of legitimate users. Many Captchas make user experience worse, and obstruct online access for people with disabilities. For them, Captcha solvers open access to online resources they need. Another group of users benefiting from Captcha solvers are data scientists and AI/ML developers, whose projects require extensive automated data extraction.
What is a Captcha?
Captcha is a test that allows to determine, if a user is human. The term invented by Luis von Ahn, Manuel Blum, Nicholas Hopper, and John Langford in 2003 is actually an acronym meaning a <Completely Automated Public Turing test to tell Computers and Humans Apart>, and this is what it is: Captchas present a variety of text, audio, logic or image-based problems that people usually solve better than machines.
Here are some types of Captchas:
- Text-based CAPTCHAs. Main techniques employed for this type of Captcha are different variations of Gimpy that offer users to correctly interpret distorted words or phrases, and Simard’s HIP that distorts randomly chosen letters and numbers.
- Image-based CAPTCHAs are usually a set of photos, pictures or other visual elements users can recognize. They are supposed to make a selection of images meeting certain criteria, for example, showing only pets, bicycles or clouds.
- Audio-based CAPTCHA is an alternative to distorted text: as the term implies, you use your ears to make out words, letters or numbers out of interfering noise. It can be used by visually impaired users and ordinary people, who can’t make out distorted characters on the screen.
- CAPTCHA in the form of word or math problem implies that users should solve a simple arithmetic problem, such as 17+6, or complete a word combination, for example, “The sky is blue, and the grass is ___”.
- No CAPTCHA ReCAPTCHA is a trouble-free approach invented by Google. All you have to do is just to confirm that you are a human. Google analyzes user’s movements to determine, if the confirmation is provided by a person or a bot.
Why Use Captcha Solvers?
Captcha solvers can do a power of good for many people, who use them for a variety of tasks and goals. All in all, you can rely on captcha solving for SEO and web scraping, as part of e-commerce or other business tasks:
- These tools are used as part of web scraping essential in collecting vast amount of data for ML model training. Without them, anti-scraping measures would stop the bot from doing its job and data scientists couldn’t get all the data they need. Solvers enable access to diverse datasets and thus enhance accuracy of AI algorithms.
- Captcha solvers can significantly simplify online access for disabled users. For example, captchas often pose formidable difficulties for visually impaired or auditory handicapped people.
- For academic community and researchers, captcha solvers function as the operating environment and source of understanding, how to further develop and improve cybersecurity measures and other captcha-related security solutions.
How Captcha Solving Services Work
The principle of operation of a Captcha solver bot is rather straightforward. You need to supply the Captcha your bot encounters to the API (or service) and it will process it in one of two ways: with automated character recognition and/or with a human solving the elementary problem.
In most cases, you need to register with such service, integrate the captcha solving API into your scraper and feed the Captchas to the solver. The output would be a text solution to the Captcha.
Automated vs. Human Solving
The main demarcation line of captcha technology lies in whether captcha solving is totally automated or implies a human intervention.
Human-powered CAPTCHA solvers feature better accuracy as compared to automated tools, as, after all, there are people behind the crackled puzzle here. This is exactly why such services are usually somewhat slower and more expensive – manual efforts always require more time and cash.
In what refers to captcha technology, it has made a long way of evolution from OCR (Optical character recognition) to neural networks:
- OCR copes with simple text-based CAPTCHAs. Historically the first technology to bypass captcha restrictions, it is able to recognize slightly distorted letters and numbers without tricky overlays and contour changes. Before captcha recognition, the algorithm must find the boundary of each sign, that’s why it often fails with overlaid characters. It features high solving speed, but accuracy below 90% with difficult distortions.
- Automated scripts are designed to simulate human browsing actions, such as clicking and mouse manipulation. These tools are more efficient for bypassing reCAPTCHA and Invisible Captcha. To create such scripts, Selenium and Puppeteer are often used.
For example, Selenium simulates mouse movements, clicks, and text input to solve reCAPTCHA problems. Besides, with predefined patterns used, it can detect and select correct images in “select all images according to the criterion” task.
Puppeteer, a Node.js library, allows to automate web interactions in modern web pages with complex interactions, such as Single Page Applications (SPAs).
- Audio transcription methods download audio captchas and automatically convert them into text. As their operating logic implies, they are best for audio-based captchas.
- Image recognition with neural networks. Deep learning has revolutionized the approach to image recognition. Older script-based technologies just fulfilled a set of successive actions. In contrast to them, a properly trained CNN/RNN model can output the result and doesn’t require programming of intermediate steps, such as letter segmentation. For example, a DenseNet variation demonstrated > 99.9 % accuracy on CAPTCHAs with distorted merged characters.
- Captcha solving APIs are pre-built services that solve captchas via API calls. This Captcha solving technique can cope with virtually all kinds of captchas.
Integration with APIs
The API-based approach to captcha solving became a breakthrough in the field. Now, if you need to bypass captcha restrictions, you can outsource the entire endeavor to a third-party vendor with the maximum automation of the workflow.
Most API services offer quite a user-friendly pattern:
- After signing in at the vendor’s website, send the captcha to be resolved to their server. For this, you need to obtain an API key or token and submit the HTTP(S) POST request to the API.
- Get ID of the submitted task. It’s necessary to check the completion progress.
- Submit HTTP GET request to the API. If the captcha is already solved, the server returns the answer in the plain text, JSON or another format. If the job is still in progress, you’ll get a respective message and a recommendation to retry in 5 seconds or another time interval, and if the task failed for some reason, the API returns an error message.
This solution brings multiple advantages to users:
- Due to captcha automation, it saves time required to solve captchas;
- APIs, especially if combined with ML algorithms, significantly enhance captcha solving accuracy;
- APIs can handle job scalability well, which makes them a proper solution for tasks of varied scope;
- As an automated solution, API-based captcha solving is more cost-efficient as compared to human efforts;
- This approach improves captcha solving speed and user experience in general.
Top Captcha Solvers
The following is our list of the Best Captcha Solver Service providers and their products. They have proven their efficiency in the world of overriding Captchas and gained acclaims from the users across the Globe.
1. CapSolver
CapSolver is one of the fastest automatic Captcha solving engines in the industry. It would be a perfect choice for corporate scrapers looking for a high rate of Captcha solving (up to 99%).
Now, you can use this solver against reCAPTCHA V2, reCAPTCHA V3, hCaptcha, hCaptcha Click, FunCaptcha and more. The best thing about CapSolver is that it works virtually in real time. This means absolutely low latency in submitting and solving Captchas.
And all of that can be yours for a considerably low budget. You start with a trial plan from CapSolver and proceed with scraping, and later upgrade to a plan that suits your needs the best. For instance, reCaptcha V2 tokens will cost you $0.8 for 1000 requests, and the solving speed would be around 5 seconds.
2. 2captcha
2captcha is one of the biggest names in the industry of human-powered Captcha solving. It is fast, accurate and easy to use. For you, as a user, it will take just to register with the service and start feeding your Captchas to it. The output will be a text-based solution to the Captchas you sent.
All of it is done using the APIs of the system (with most languages supported, including PHP, JavaScript, Golang, C#, Java, and Python) and the communication with 2captcha is done in HTTP(S) protocols.
The service is great for reCaptcha resolution, when you are able to pay by the Captchas that will be solved by the system. All other types of Captchas, including but not limited to TikTok captcha, hCaptcha and FunCaptcha can also be solved by 2captcha easily.
3. BypassCaptcha
BypassCaptcha may first seem like a highly succinct and technical service, but this is what you actually need when what you are looking for is online captcha solving efficiency.
BypassCaptcha has its own proprietary system for Captcha solving, which can be integrated for free into scripts written in a range of languages (including Ruby, JS, Python, Perl, C, С#, etc.).
In order for the system to start solving your Google’s V2 and V3 reCaptcha, you need to feed the Captcha parameters via the API and get the results within seconds. What is also remarkable about BypassCaptcha, is that you can integrate it inside your scraper with datacenter or residential proxies and get a full stats report from the service on the submissions (or requests) and balance details.
4. AZcaptcha
AZcaptcha is easily one of the best captcha solver extensions in the market. It is accurate and cheap, making AZ a great choice for Captcha solving while browsing or scraping. It is primarily used to solve v2 and v3 reCaptcha from within an application or a bot.
It can be automated and coupled with a highly effective datacenter rotating proxies to pass through zillions of Captcha images. The sequence of operations would be familiar to any Captcha solver user: you will integrate the AZ’s API into your script and the text answers to Captchas will be fed back to you. The efficiency rate of AZcaptcha is in the range of 90-95% depending on the types of Captchas you are solving.
As far as the pricing goes, you can pay $24.9 per month for an unlimited plan. 50 Captchas can be solved for free to test out the service.
5. Best Captcha Solver
To have Best Captcha Solver in the top list of the best paying captcha solvers sounds like an ironic but logical move, but clearly you need to earn this name in the market.
Best Captcha Solver is an old player in the industry. Over the seven years of its existence it has become a leader helping you avoid Captcha. And this service is super good in human-based recognition of Captchas without the use of the browser on the client side.
Another great feature of BSC is its customer support working round-the-clock. Some stats that the service is sharing is the response time of solving Captchas. The normal rate is 14 seconds for regular Captchas and 46 for reCaptchas.
The plans for the service start from $0.8 per 1000 images ($2.5 per 1000 for reCaptchas) and a free trial is possible only as a demo project.
6. Anticaptcha
Anticaptcha is definitely one of the leaders in solving Captchas. What makes it one of the best captcha solver software packages is super fast response rate (around 7 seconds) and great success rate (around 99%).
How is that possible? The answer lies deep in the process setup of the service. Anti features a vast base of human captcha solvers available across the World 24/7. This makes the solver perfect for overriding reCaptchas during scraping missions, especially with rotating or static residential proxies for successful execution.
As far as the integration, you will need to hook up an API into your app. Then, select a plan with unlimited uploads. Anti will assign a human solver to your project and the answers will be fed back to you as text.
Anti is great for solving all types of reCaptchas and hCaptchas. JavaScript Captchas are also well resolved. The payment is pay-as-you-go with per Captcha plans. You can also buy a plan for 1000 images (from $0.5).
7. EndCaptcha
The uniqueness of EndCaptcha is its positioning. This Captcha solver service is the only one in the market with a Service Level Agreement with a quality assurance manager in charge of your account.
The service has a strong engineering support of the human solvers and this ensures high response rate and millions of Captchas solved daily, making it one of the best text Captcha solvers on the market.
EndCaptcha also insures its work, so that you can get a full refund if you are unhappy with the service or its speed.
To start working with EndCaptcha, you can sign up for the free plan with 1000 Captshas. For more requests, you can apply for a plan from $11.99 (for 3000 Captcha credits).
Comparison of Captcha Solving Services
Searching for the right captcha solving software, you’ll inevitably start comparing the offers by the range of parameters, from resolved captchas types and pricing up to accuracy and speed.
Pricing Models
The most common model of captcha solving pricing is a certain amount charged per thousand requests. Since many service providers stick to this model, it’s quite easy for users to compare the prices and select the best offer.
However, there are websites that offer yearly or monthly billing depending on thousands of requests, and in rare cases you can even find flat prices with unlimited number of requests.
Another issues worth keeping in mind is whether a service offers free trial and how long it lasts.
Accuracy and Speed
Many captcha solvers post the speed of performed requests for users to make informed decisions of the purchase. Depending on the captcha type, human efforts and technologies involved, most offers range from 3 up to 30 seconds.
Unlike available capacity and speed, not all captcha solvers publish a precise accuracy level, though you can still find service providers that claim accuracy above 90% or disclose specific accuracy figures closer to 100%.
User Reviews and Feedback
The most reliable source of data about speed, accuracy and quality of service offered by captcha solvers is certainly user reviews and feedback. No company will tell you that much about their flaws and failures as their users will do. So if you want to find out all the truth about how fast and accurate captcha solvers are, it’s better to read field-specific forums and social media groups, where users share their opinions about captchas solving services they used.
Conclusion
With all information you now know about captcha solvers, you are sure to choose the solution that suits your needs based on resolved captcha types, human or AI-based approaches, project scope, use of API, pricing and quality of service.
Choosing the Right Captcha Solver for Your Needs
If you start searching for captcha solvers in Google, you’ll get plenty of competitors to choose from. Not to get lost in this ocean of the “best captcha solvers” ever, it’s reasonable to assess the offers according to the following criteria:
Support. In some cases, high-quality support service can work as the Aladdin’s lamp saving you out of severe issues.
Speed, during which a captcha is solved. This parameter is especially important, when you handle time-sensitive jobs.
Accuracy. Every service usually claims that it’s the most accurate one, so it’s better to judge by user reviews.
Tariffs. Choose the pricing structure that suits your needs in the most adequate way.
Security. Don’t forget that any sensitive data require proper privacy level.
Frequently Asked Questions
Please read our Documentation if you have questions that are not listed below.
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What is a Captcha Solver?
A Captcha Solver is a software tool that helps solve Captcha puzzles as a service. This is carried out by involving advanced OCR (Optical Character Recognition) and/or human Captcha solvers.
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How did you compile the list of TOP CAPTCHA Solvers?
We have studied the Captcha solving services that are used and recommended by proxy server users around the World. The main criteria for using the best Captcha solvers revolve around the level of service and tech support that the top applications provide in this sector.
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How can a Captcha Solver help me with a scraping project?
Scraping on a high-load project can involve overriding Captchas that the website feeds to a scraper to avoid non-human access to itself. Using a Captcha Solver can automate the process of bypassing Captcha puzzles by real humans or OCR tools embedded into the APIs.
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What is the one most common feature among the Top Captcha solvers?
All of the companies in the lists provide Captcha solving solutions with great response and success rate (in the range of 90% accuracy). But one most common feature is the high level of service tech support that regular users can expect from them.
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