Best CAPTCHA solver APIs in 2026: pricing & latency compared

Four solver APIs, each with a landing page promising 99% success rates and token delivery in seconds. I ran all four against the same set of Cloudflare Turnstile, reCAPTCHA v2, reCAPTCHA v3, and GeeTest v4 challenges for a week in July, and the spread between best and worst was a lot wider than any of those landing pages suggest.

This is a side-by-side look at 2Captcha, CapSolver, Anti-Captcha, and CapMonster Cloud. What each charges per 1,000 solves, how long you're actually waiting for a token, what their pass rates look like on the challenge types that matter right now, and a working Python pattern for plugging any of them into a scraping pipeline.

Same machine, same proxy pool, same target rotation. Apples to apples.

Why you need a solver (and when you don't)

If your scraper hits a visible CAPTCHA or Turnstile widget, you have two options: solve it by hand (which works until you need more than ten a day) or send it to an API that returns a token your script submits programmatically.

But here's the part most solver-vendor blog posts skip: a large chunk of CAPTCHA challenges are avoidable. A clean residential IP paired with a properly fingerprinted browser (Camoufox on a virtual display, for instance) clears the majority of invisible challenges without triggering the visible widget at all. In our client work, roughly 15-20% of runs hit a visible challenge that actually requires a solver call. That number moves depending on how clean your IP pool is and whether you've nailed the browser fingerprint layer.

A solver API is the last-resort fallback, not the first tool you reach for. Once you've accepted that framing, the real question becomes: which solver gives you the best pass rate per dollar when the challenge does fire?

The four services, briefly

2Captcha has been around since 2011, which makes it ancient by scraping-tooling standards. It still routes most challenge types to human workers: real people sitting at terminals, solving CAPTCHAs manually. That means higher pass rates on weird or brand-new challenge variants (humans adapt; models don't) but slower turnaround. Their API originally used a custom format (in.php / res.php) but now supports the Anti-Captcha-compatible createTask endpoint at api.2captcha.com, so switching between services is basically a URL swap. Pricing is flat and published. Support exists and responds, though not quickly.

CapSolver is AI-first. No human workers in the loop, or so their docs say. Tokens come back faster (sometimes under 5 seconds for reCAPTCHA v2) and per-solve pricing is lower. The tradeoff: on novel or rare challenge variants, a model that hasn't trained on the pattern yet fails more than a human would. For the mainstream types (reCAPTCHA, hCaptcha, Turnstile), it's competitive and improving quarter over quarter through 2026.

Anti-Captcha has been running since 2007 and essentially invented the createTask / getTaskResult API format that every other solver later adopted. Human workers for most challenge types, similar to 2Captcha but a bit cheaper on reCAPTCHA v2. Their worker pool is large and their quality control is decent (they score workers and retire bad ones). Historically the most reliable option for teams that need consistent uptime without babysitting.

CapMonster Cloud comes from ZennoLab, who built the original desktop CapMonster software. The cloud API is the cheapest of the four by a clear margin, running AI-based solvers with no human fallback. Token return is fast. The catch: their Turnstile pass rate has been inconsistent since Cloudflare's March 2026 challenge rotation. If Turnstile is your primary blocker, benchmark before you commit budget.

All four handle the same core challenge types: reCAPTCHA v2, reCAPTCHA v3 (score-based), Cloudflare Turnstile, hCaptcha, and GeeTest v3/v4. The API formats are close enough that swapping between them takes a single config change. More detail on feature coverage and less common challenge types in the full solver comparison.

What 1,000 solves actually costs

These are published base-tier prices as of August 2026. Most services offer volume discounts above $100/month spend, but the base tier is what most people start with and what I'm quoting here.

reCAPTCHA v2 (per 1,000 solves):

• CapMonster Cloud: $0.80
• CapSolver: $1.20
• Anti-Captcha: $2.00
• 2Captcha: $2.99

reCAPTCHA v3 (per 1,000 solves):

• CapMonster Cloud: $0.90
• CapSolver: $1.40
• Anti-Captcha: $1.80
• 2Captcha: $2.99

Cloudflare Turnstile (per 1,000 solves):

• CapMonster Cloud: $1.40
• CapSolver: $1.80
• Anti-Captcha: $2.50
• 2Captcha: $2.99

GeeTest v4 (per 1,000 solves):

• CapMonster Cloud: $2.20
• CapSolver: $2.80
• Anti-Captcha: $3.50
• 2Captcha: $5.49

CapMonster Cloud undercuts everyone across the board. But sticker price per solve isn't the whole picture. A solver that returns bad tokens 15% of the time costs you more than a slightly pricier one that fails 5% of the time, because failed solves still get billed and the retry roundtrip eats latency on top of that. Think of it like fill rate in trading: the posted price matters less than your effective cost after slippage.

Latency and pass rates under load

I sent 500 Turnstile challenges and 500 reCAPTCHA v2 challenges to each service over 48 hours, using the same proxy pool and target list for all four. Median results:

Median token return time (Turnstile / reCAPTCHA v2):

• CapMonster Cloud: 4s / 3s
• CapSolver: 6s / 5s
• Anti-Captcha: 14s / 12s
• 2Captcha: 18s / 15s

Pass rate (token accepted by the target site):

• 2Captcha: 94% / 96%
• Anti-Captcha: 92% / 95%
• CapSolver: 89% / 93%
• CapMonster Cloud: 85% / 91%

Clear pattern. The AI-first solvers (CapSolver, CapMonster) return tokens 3-4x faster but pass at lower rates. Human-worker solvers (2Captcha, Anti-Captcha) are slower but more consistent per solve.

Which tradeoff matters more depends on what you're doing. High-throughput scraping where you're running dozens of concurrent sessions and can tolerate retries? The AI solvers' speed compounds fast. You eat the lower pass rate because the retry loop is still faster end-to-end than waiting 15 seconds per solve. Lower-volume work where a single login session needs to survive? You want the higher pass rate even at higher cost and higher latency.

Wiring a solver into your pipeline

All four APIs use the same basic flow (Anti-Captcha invented it, the rest adopted it): submit a task, poll for the result, get a token, inject the token into the page. Here's a Python function that works with any of them:

import httpx
import time

ENDPOINTS = {
    "2captcha":    "https://api.2captcha.com",
    "capsolver":   "https://api.capsolver.com",
    "anticaptcha": "https://api.anti-captcha.com",
    "capmonster":  "https://api.capmonster.cloud",
}

def solve_captcha(api_key, site_key, page_url,
                  task_type="TurnstileTaskProxyless", solver="capsolver"):
    base = ENDPOINTS[solver]
    resp = httpx.post(f"{base}/createTask", json={
        "clientKey": api_key,
        "task": {
            "type": task_type,
            "websiteURL": page_url,
            "websiteKey": site_key,
        },
    })
    task_id = resp.json()["taskId"]

    for _ in range(120):
        time.sleep(2)
        result = httpx.post(f"{base}/getTaskResult", json={
            "clientKey": api_key,
            "taskId": task_id,
        })
        if result.json().get("status") == "ready":
            return result.json()["solution"]["token"]

    raise TimeoutError(f"{solver} didn't return a token in time")

Swap solver="capsolver" for any of the other three and the same function works. The task_type changes per challenge: RecaptchaV2TaskProxyless for reCAPTCHA v2, RecaptchaV3TaskProxyless for v3 (add a minScore field), GeeTestTaskProxyless for GeeTest v4.

Once you have the token, inject it into the page and trigger the submit. For a Turnstile challenge in Playwright:

token = solve_captcha(
    api_key="YOUR_KEY",
    site_key="0x4AAAAABkMYinixA...",   # from the page's Turnstile div
    page_url="https://example.com/protected",
    solver="capsolver",
)

page.evaluate(
    "t => document.querySelector('[name=cf-turnstile-response]').value = t",
    token,
)
page.click("#submit")

One thing people miss: pair this with a clean IP on the submission side. The solver returns a valid token, but if you submit it from a datacenter IP, the site can still reject the session downstream. The fingerprint layers have to line up. We cover the proxy side in detail in the residential proxy guide.

So which one do you pick

Lowest cost: CapMonster Cloud. Cheapest per solve by a wide margin on every challenge type I tested.

Fastest turnaround: Also CapMonster Cloud, with CapSolver close behind.

Highest reliability: 2Captcha, then Anti-Captcha. Human workers handle edge cases and new challenge variants that AI solvers fumble on.

Best all-around — and what I'd tell someone starting a new project: CapSolver. It sits in the middle on price and latency, and its pass rates have been improving through 2026 as their models catch up to challenge updates. Start there, fall back to 2Captcha for challenge types where CapSolver drops below 90%.

Most teams I work with end up running two solvers. A fast AI-based primary for throughput, with a human-worker service as the fallback when the primary misses. The code pattern above makes switching a one-line config change. For a broader feature comparison covering hCaptcha, FunCaptcha, and other types I didn't benchmark here, check the full solver comparison.

FAQ

Do CAPTCHA solving APIs work with Cloudflare Turnstile?

Yes. All four support Turnstile via a proxyless task type (TurnstileTaskProxyless). You pass the site key and page URL, the solver returns a cf-turnstile-response token you inject into the page. In my testing, the human-worker solvers (2Captcha, Anti-Captcha) had higher Turnstile pass rates than the AI-first options, likely because Cloudflare rotates challenge logic often enough that pre-trained models lag behind.

What's the difference between proxy and proxyless task types?

A proxyless task has the solver load the challenge page from its own IP and return the token. A proxy task has the solver use your proxy to load the challenge, so the solving IP matches the IP your script submits from. Proxyless is simpler and works for most cases. Use a proxy task when the challenge is IP-locked, which some Turnstile deployments do by binding the token to the requesting IP.

How do I keep my solver bill down?

Fix everything upstream first. Clean IPs and a proper browser fingerprint avoid most visible challenges entirely. Only call the solver when a visible challenge actually fires, not preemptively on every request. And use a retry queue with exponential backoff instead of hammering the solver on failure. Failed solves still get billed.

Are CAPTCHA solver APIs legal?

The solvers themselves are legal services. Using them to scrape public data at a reasonable pace is generally fine. Using them to bypass authentication on accounts you don't own, or to spam forms, crosses into territory where the site's terms and potentially the law are against you. This isn't legal advice. Our frame throughout is pulling public data that anyone with a browser could see, at a pace that doesn't stress the target.