Best CAPTCHA solving services compared by accuracy and speed

A captcha solver is useful only when the answer it returns is accepted. Speed matters, but a fast incorrect token still leads to retries, failed sessions, interrupted workflows, and extra requests.

This comparison is based on benchmark data from CaptchaTheCat, which tests captcha-solving providers across several captcha and anti-bot categories. The services covered are 2Captcha, SolveCaptcha, Anti-Captcha, CapSolver, and DBC.

The results show why a provider cannot be judged by speed alone. Some services return answers faster, while others achieve higher accuracy or deliver results more consistently in specific categories. The right choice depends on the CAPTCHA type, traffic volume, acceptable response time, and integration requirements.

Summary of results

In the aggregated sample, 2Captcha and SolveCaptcha achieved the same average correctness rate. SolveCaptcha was slightly faster overall and had a lower benchmark bid indicator.

2Captcha recorded higher received rates across several categories, while SolveCaptcha recorded shorter recognition times in several samples.

Anti-Captcha performed well in selected categories, especially image CAPTCHA, but its results were less consistent across the full benchmark.

CapSolver achieved 100% correctness and a 100% received rate in the reCAPTCHA v2 sample, although its average recognition time was noticeably higher than that of 2Captcha and SolveCaptcha.

DBC is included for market coverage, but the available data is too limited for a reliable category-by-category comparison.

How the comparison works

The benchmark uses four metrics:

Metric	What it shows
Correctly solved %	How often the returned answer is accepted
Received %	How often the service returns a result
Avg recognition time	How long the service takes to return an answer
Avg bid / 1000	Benchmark bid indicator per 1,000 tasks

Correctness is the most important metric because a rejected answer usually triggers another request, interrupts the session, or creates a new challenge.

The received rate shows how reliably the service returns a result. Even accurate answers are less useful if too many tasks end without a response.

Recognition time matters only when viewed together with correctness and the received rate. A fast answer provides little value if the target workflow rejects it.

The benchmark bid indicator is included for comparison only and should not be treated as an official public price.

Why accuracy matters more than speed

An incorrect CAPTCHA result can affect more than one request. It may trigger a new challenge, force a page reload, invalidate cookies, interrupt the browser session, or require a proxy change.

That is why correctness matters more than raw speed. A fast result is useful only if the target system accepts it.

For this comparison, correctness is the main metric, followed by the received rate and recognition time.

Service models

2Captcha uses a hybrid model that combines automated recognition with human workers.

SolveCaptcha relies on AI-based recognition. Its results were close to 2Captcha in several categories, and it was faster in several benchmark samples.

Anti-Captcha mainly uses human workers. It performed well in some categories, although its results varied more across the full benchmark.

CapSolver focuses on automated AI-based solving. Its strongest result in this comparison was in the reCAPTCHA v2 sample.

DBC is a long-standing provider, but the available benchmark data is too limited for a detailed comparison.

Aggregated benchmark snapshot

In the aggregated results, 2Captcha and SolveCaptcha achieved the same correctness rate. SolveCaptcha was slightly faster and had a lower benchmark bid indicator, while 2Captcha returned results more consistently.

Anti-Captcha had lower correctness and a considerably longer recognition time.

Service	Average recognition time, sec.	Average received (%)	Average correctly solved (%)	Average bid / 1000
2captcha.com	19.38	93.83	89.17	2.15
solvecaptcha.com	18.40	92.50	89.17	1.05
anti-captcha.com	51.83	87.17	65.83	2.51

These figures provide a useful overall view, but they do not show how performance changes between CAPTCHA types. A service with strong aggregate results may still be weaker in a particular category, while another may perform better in a more specific use case.

Detailed category analysis

reCAPTCHA v2

2Captcha, SolveCaptcha, and CapSolver all achieved 100% correctness and returned a result for every task in the reCAPTCHA v2 sample.

Solving service	Avg recognition time, sec.	Received (%)	Correctly solved (%)	Avg bid / 1000
2captcha.com	6.09	100	100	2.99
solvecaptcha.com	5.34	100	100	0.55
capsolver.com	28.00	100	100	0.80
anti-captcha.com	55.00	100	20	2.26

The main difference between 2Captcha and SolveCaptcha was recognition time. SolveCaptcha was slightly faster, returning results in 5.34 seconds on average compared with 6.09 seconds for 2Captcha.

CapSolver matched both services in correctness and received rate, but took 28 seconds on average.

Anti-Captcha also returned a result for every task, although only 20% of its answers were accepted.

In this sample, 2Captcha and SolveCaptcha both recorded 100% correctness and 100% received rates, with average recognition times of 6.09 and 5.34 seconds, respectively.

reCAPTCHA v3

reCAPTCHA v3 is score-based, so a returned token is useful only if it meets the score threshold required by the target workflow. Correctness, received rate, recognition time, and score distribution therefore all need to be considered.

Solving service	Score distribution	Avg recognition time, sec.	Received (%)	Correctly solved (%)	Avg bid / 1000
2captcha.com	Score 0.1: 32.58%; score 0.9: 67.42%	8.17	100	100	2.99
solvecaptcha.com	Score 0: 1.11%; score 0.1: 33.33%; score 0.9: 65.56%	7.07	100	98	0.80
anti-captcha.com	Score 0.1: 20.00%; score 0.3: 13.33%; score 0.9: 66.67%	17.00	100	100	2.02

2Captcha and Anti-Captcha both achieved 100% correctness and returned a result for every task. SolveCaptcha was the fastest service in the sample, although its correctness rate was slightly lower at 98%.

The share of score 0.9 tokens was similar across all three services: 67.42% for 2Captcha, 66.67% for Anti-Captcha, and 65.56% for SolveCaptcha.

2Captcha and Anti-Captcha both recorded 100% correctness, while 2Captcha had the shorter recognition time. SolveCaptcha was slightly less accurate but returned results faster and had a lower benchmark bid indicator.

Cloudflare CAPTCHA

The three services produced similar results in this sample. Since each returned a result for every task, the main differences were correctness, recognition time, and the benchmark bid indicator.

Solving service	Avg recognition time, sec.	Received (%)	Correctly solved (%)	Avg bid / 1000
2captcha.com	11	100	87	1.45
solvecaptcha.com	10	100	85	0.80
anti-captcha.com	25	100	86	2.00

2Captcha recorded the highest correctness rate at 87%, followed by Anti-Captcha at 86% and SolveCaptcha at 85%.

SolveCaptcha was the fastest at 10 seconds, with 2Captcha only one second behind. Anti-Captcha took 25 seconds on average.

The gap between 2Captcha and SolveCaptcha was narrow. 2Captcha was slightly more accurate, while SolveCaptcha was marginally faster and had a lower benchmark bid indicator. Both were considerably faster than Anti-Captcha in this sample.

Image CAPTCHA

Results for image CAPTCHAs can vary considerably depending on the language, distortion, layout, noise level, and overall visual complexity of the task.

Solving service	Avg recognition time, sec.	Received (%)	Correctly solved (%)	Avg bid / 1000
2captcha.com	12	98	53	1.00
anti-captcha.com	14	97	60	2.00
solvecaptcha.com	12	97	59	0.35

Anti-Captcha had the highest correctness rate at 60%, with SolveCaptcha close behind at 59%. 2Captcha reached 53%.

2Captcha returned results most consistently, with a received rate of 98%. It matched SolveCaptcha on recognition time at 12 seconds, while Anti-Captcha averaged 14 seconds.

The results were split across the three providers. Anti-Captcha led in correctness, 2Captcha had the highest received rate, and SolveCaptcha combined near-leading accuracy with fast recognition and the lowest benchmark bid indicator.

Advanced CAPTCHA sample

This sample showed a clear gap between 2Captcha and SolveCaptcha on one side and Anti-Captcha on the other.

Solving service	Avg recognition time, sec.	Received (%)	Correctly solved (%)	Avg bid / 1000
2captcha.com	18	85	97	2.99
solvecaptcha.com	19	76	95	0.80
anti-captcha.com	53	80	58	1.80

2Captcha led the sample in all three primary metrics, with 97% correctness, an 85% received rate, and an average recognition time of 18 seconds.

SolveCaptcha was close in correctness at 95% and only one second slower. Its received rate was lower at 76%, although it had the lowest benchmark bid indicator.

Anti-Captcha returned results for 80% of tasks, but its correctness was considerably lower and its average recognition time was much longer.

Overall, 2Captcha recorded the highest measured values across correctness, received rate, and recognition time in this sample. SolveCaptcha remained close on correctness and recognition time, but returned results less consistently.

High-complexity CAPTCHA sample

Solving service	Avg recognition time, sec.	Received (%)	Correctly solved (%)	Avg bid / 1000
2captcha.com	61	80	98	1.45
solvecaptcha.com	57	82	98	2.99
anti-captcha.com	147	46	71	5.00

2Captcha and SolveCaptcha both achieved 98% correctness.

SolveCaptcha was four seconds faster and had a slightly higher received rate, at 82% compared with 80% for 2Captcha. 2Captcha had the lower benchmark bid indicator.

Anti-Captcha took substantially longer and recorded lower correctness and received rates.

The difference between 2Captcha and SolveCaptcha was small on the main performance metrics. SolveCaptcha had a slight advantage in speed and received rate, while 2Captcha showed the lower benchmark bid indicator.

What to test before choosing a CAPTCHA solver

Public benchmarks are useful for comparing services, but they cannot replace testing in the actual workflow. Performance may vary depending on the target site, CAPTCHA type, proxy quality, region, browser fingerprint, traffic pattern, and integration method.

Before choosing a provider, test the following:

Test area	What to check
Target captcha type	reCAPTCHA v2, reCAPTCHA v3, Cloudflare CAPTCHA, image CAPTCHA, or another challenge type
Correctness rate	How often returned answers are accepted by the target workflow
Received rate	How often the service returns a usable result
Response time	Average, median, and worst-case solving time
Retry behavior	Whether failed tasks can be retried without interrupting the session
Proxy and region impact	Whether results change across proxy pools, countries, or regions
Integration stability	API errors, timeouts, SDK support, logging, and error handling

Testing should run long enough to capture both normal conditions and temporary performance drops. Average response time alone can hide timeouts, regional differences, failed tasks, or slower processing under load.

Limitations

This comparison is based on CaptchaTheCat benchmark data. Results may vary depending on the target site, CAPTCHA type, region, proxy setup, browser fingerprint, traffic quality, and integration method.

The avg bid / 1000 value is a benchmark indicator and should not be treated as an official public price.

The benchmark focuses on correctness, received rate, recognition time, and bid indicators. It does not fully reflect CAPTCHA coverage, API reliability, SDK quality, fallback options, regional performance, or behavior under sustained load.

Small differences between providers may also change with a larger sample or different testing conditions.

DBC is included in the overview, but the available data is not detailed enough for a fair category-by-category comparison.

The results provide a useful reference, but they should be confirmed through testing in the actual production environment.