Best Web Scraping APIs to Bypass PerimeterX: July 2026 Benchmark

Scrapfly is the best web scraping API for bypassing PerimeterX, with a 100% success rate across 8 web scraping APIs benchmarked against live PerimeterX-protected sites in July 2026. Only 2 of the 8 cleared above 90%, though 6 cleared 50% or better.

PerimeterX (now part of HUMAN Security) scores every visitor with a trust score built from several signals at once: IP reputation, the TLS/JA3 fingerprint, the JavaScript environment, and how the session behaves over time. Fall below its threshold and you get PerimeterX's "press and hold" challenge or an outright block. The APIs that score well here keep that trust score high across the whole session, not just the first request. The benchmark is open source on GitHub and refreshed twice a month, with no affiliate links and no sponsors, so you can reproduce every number here yourself.

Ranked by live PerimeterX success rate, best first:

1. 🥇 Scrapfly: 100% success on PerimeterX
2. 🥈 Scrapingant: 91% success on PerimeterX
3. 🥉 Firecrawl: 89% success on PerimeterX

Top 7 web scraping APIs for PerimeterX, ranked

PerimeterX protects one clean benchmark target, Walmart. Its per-target ranking lives on the Walmart page rather than being duplicated here.

#	Service	Success	Speed	Cost/1k		Code
1 🥇	Scrapfly	100%	2.8s	$0.21	(237) ★ 4.9	code
2 🥈	Scrapingant	91%	42.6s	$1.9	—	code
3 🥉	Firecrawl	89%	5.2s	$7.84	—	code
4	Scraperapi	89%	7.9s	$2.45	(62) ★ 4.6	code
5	WebScrapingAPI	87%	14.6s	$2.71	—	code
6	Scrapingdog	83%	7.2s	$1.0	—	code
7	Zenrows	45%	12.2s	$6.9	(103) ★ 4.8	code

Data range Jul 03 – Jul 17

Ranking history: web scraping APIs vs PerimeterX over time

The 7 web scraping APIs for PerimeterX, reviewed

1. Scrapfly: 100% success on PerimeterX

PerimeterX assigns each session a trust score from its IP, TLS fingerprint, JavaScript environment, and behavior, and keeps updating it as the session goes, so a bypass has to look plausible on every signal at once and keep looking plausible as the session repeats. That's where Scrapfly holds up: it cleared 100% of PerimeterX requests this run at $0.21 per 1,000 successful and 2.8s average, and its trust score didn't drift across repeated sessions. Requests came back clean on the first attempt, which keeps the cost per successful request low.

Pros:

• Highest success rate in the test, holding its trust score steady as the session repeats
• Only charges for successful scrapes, so failed requests cost nothing
• First-class SDKs for Python, TypeScript, Go, and Rust, plus a Scrapy extension
• One asp flag turns on the full anti-bot stack, so there is little to tune

Cons:

• The entry (Discovery) plan caps concurrency at 5 requests, so high-throughput jobs need a higher tier
• The free tier is a one-time 1,000 credits, enough to prototype and smoke-test but not to benchmark at volume
• The dashboard could be more polished for usage monitoring and debugging

2. Scrapingant: 91% success on PerimeterX

Scrapingant is a lightweight, low-sticker-price API that runs a real browser with session support. That real-browser setup is what PerimeterX's device and behavioral checks look for, and on PerimeterX it cleared 91% this run. Its main trade-off is speed. Because the trust score weighs the whole session, expect its result to vary between targets and runs.

Pros:

• Low sticker price
• Real-browser rendering with sessions, which helps against PerimeterX's checks

Cons:

• Slow at 42.6s
• Its result depends on holding PerimeterX's trust score across a session, which can vary by target
• Small provider with a thin public track record

3. Firecrawl: 89% success on PerimeterX

The reason to consider Firecrawl is its output: it returns structured markdown rather than raw HTML, which saves a parsing step for LLM and RAG pipelines. It runs a real browser, so it can produce the device fingerprints PerimeterX's trust score checks for, but it's one of the pricier options in the group. On PerimeterX it cleared 89% this run.

Pros:

• Returns LLM-ready markdown, saving a parsing step for AI and RAG pipelines
• Runs a real browser, so it produces the device fingerprints PerimeterX's trust score checks for

Cons:

• Among the pricier options per successful request; cost is the top user complaint
• Not built for speed, and a full browser per page adds latency
• Holding a high trust score across a long session is not its focus

4. Scraperapi: 89% success on PerimeterX

Scraperapi is built for speed and a simple integration: when it clears a request it tends to return fast. PerimeterX is a demanding test for that model, because its scoring watches how a session behaves over time, not just the first request. On PerimeterX it cleared 89% this run.

Pros:

• Fast when it clears, with a simple integration
• Broad language SDK support

Cons:

• PerimeterX's session-level behavioral scoring is where a speed-first path is most exposed, so plan for retries
• Login-required sites and form filling are off-limits
• Geotargeting is gated by plan (US and EU only until the Business tier)

5. WebScrapingAPI: 87% success on PerimeterX

WebScrapingAPI leans on price and reach: a low cost per request and code examples across a broad set of languages. Its constraint on PerimeterX is latency, which pushes it toward batch and overnight jobs. Because PerimeterX's trust score weighs the whole session, its result here reflects how well the stack holds up on this target. It cleared 87% at 14.6s this run.

Pros:

• Low price per request
• Language integrations for most stacks

Cons:

• High latency, which suits batch over real-time
• No custom in-page JavaScript
• Customer support is a recurring complaint in user reviews

6. Scrapingdog: 83% success on PerimeterX

Scrapingdog offers the cheapest entry pricing in the group and a simple API, without first-party SDKs. On PerimeterX it cleared 83% this run. As with any provider here, that result is specific to this target: PerimeterX's trust score weighs many signals per session, so the same setup can score differently on another PerimeterX site.

Pros:

• Cheapest entry pricing
• Simple API

Cons:

• Its result depends on the trust score it can hold across a session, which can vary by target
• No first-party SDKs
• Customer support is the most common complaint in user reviews

7. Zenrows: 45% success on PerimeterX

Zenrows is a general-purpose scraping API with JavaScript rendering and session support. Running a real browser with sessions is the kind of setup PerimeterX's behavioral layer rewards, and on PerimeterX it cleared 45% this run. It fits when you want one general-purpose tool rather than optimizing hard for cost or speed.

Pros:

• Real-browser rendering and sessions, which PerimeterX's behavioral layer rewards
• One general-purpose tool rather than a single-axis specialist

Cons:

• Mid-range on both cost and speed rather than leading either
• Premium proxy geo-coverage is unclear
• Cost climbs on heavy or large-scale usage, the recurring user complaint

What makes PerimeterX hard to scrape

Most anti-bots lean on one dominant check. PerimeterX combines several into a single trust score for every visitor, recalculated as the session goes, and blocks anything that falls below its threshold with a "press and hold" challenge. A high score comes from looking like a real user on every signal at once, and a single anomaly pulls it down.

That is why a scraping session has to look plausible on every signal PerimeterX watches at once, not just one.

IP reputation. Datacenter IPs are flagged immediately. Residential and mobile addresses are the baseline, not a bonus feature.

TLS and HTTP/2 fingerprint. PerimeterX inspects cipher order, extension order, and header structure at the handshake level. A standard client like requests or axios produces a fingerprint no browser would, and that alone is enough for a block regardless of IP quality.

JavaScript environment. Browser-side scripts check hardware concurrency, WebGL renderer, canvas behavior, and other signals that a headless client either can't produce or produces incorrectly. Failing these triggers a challenge or a block before the page content loads.

Behavioral scoring. Even if a session passes the static checks, PerimeterX watches how it behaves over time: scroll patterns, click timing, navigation sequences. Sessions that don't accumulate the right behavioral history get flagged even when the initial checks passed.

Getting one layer wrong is enough, which is why the providers that clear PerimeterX tend to be the ones running a full real-browser stack. That costs compute and shows up in both latency and cost per successful request.

How to choose a web scraping API for PerimeterX

PerimeterX scores each session on many signals, so a provider's result depends on how well it holds a high trust score on your target. Match the choice to your binding constraint, working from the providers still clearing PerimeterX this run.

• Reliability first. Scrapfly leads on PerimeterX and holds its rate as the session's trust score builds, which is what production pipelines need when failed requests create downstream problems. Its cost per successful request is lower than the headline rate suggests, because few requests fail.
• Cost or speed. Among the providers still clearing PerimeterX this run, sort the table by cost per successful request or by speed and pick accordingly.

Test your actual target before scaling: a provider that clears this benchmark can score differently on the PerimeterX deployment you're scraping. And judge on cost per successful request, not sticker price, since a cheap API that fails often costs more per usable page than a pricier one that clears almost everything.

How we benchmark web scraping APIs against PerimeterX

We independently benchmark 8 web scraping APIs against live PerimeterX-protected targets, 1,000+ requests per service, twice a month. No affiliate links, no sponsors, no providers with early access to results. The full benchmark is open source on GitHub, so you can reproduce every result yourself.

Cost is measured per 1,000 successful requests on entry-plan pricing, so a cheap API that fails often scores worse than its sticker price suggests. PerimeterX's clean benchmark target is Walmart; because PerimeterX's trust score weighs the full session and each target differs, these numbers reflect this target, and a provider can score differently on another PerimeterX site. Latest data: Jul 03 – Jul 17, 2026.

Frequently asked questions about scraping PerimeterX

Can web scraping APIs reliably bypass PerimeterX in 2026?

Some can. In this benchmark, 2 cleared above 90% and 6 cleared above 50%. The difference comes down to whether the API can hold a high trust score consistently, not just on the first request but across a full session.

What's the cheapest web scraping API that actually works on PerimeterX?

Sort the ranked table by cost per successful request and read down to the first provider still clearing PerimeterX this run; that's the cheapest option that actually delivers. Lower sticker prices appear in the ranking but often fail too many requests to make their rate meaningful.

Why can the same setup score differently on two PerimeterX sites?

Because PerimeterX computes a trust score from many signals per session, and each deployment can weight them or set its threshold differently. A provider that holds a high trust score on one target may not on another, which is why we benchmark against a consistent target rather than averaging across uncontrolled domains.

Does bypassing PerimeterX require JavaScript rendering?

Yes, in almost every case. PerimeterX's device fingerprinting runs in the browser via JavaScript. Without a real execution environment the checks either don't run or produce signals that flag the session. The providers at the top of this ranking all operate real browser environments; the ones at the bottom send plain HTTP requests.

What is the difference between PerimeterX and HUMAN Security?

They're the same product line: PerimeterX is now part of HUMAN Security, and its Bot Defender is sold under the HUMAN name. The detection technology (the trust-score engine, the fingerprinting and behavioral checks) is unchanged, and either name may appear on block pages depending on which version the site deployed.

How often is this benchmark updated?

Twice a month. We re-run all the APIs against the same live targets, 1,000+ requests each, and republish the rankings. The benchmark is open source on GitHub and carries no affiliate links or sponsors, so the numbers reflect measured results only.

Conclusion

On PerimeterX, the trust score weighs the whole session, so results are specific to the target and can shift between runs. Scrapfly cleared the most and held its trust score as sessions repeated, which makes it the pick for production PerimeterX work; below it, use the live table, sorted by current success rate, and judge on cost per successful request rather than sticker price.

Run a small test against your actual target before scaling. The benchmark refreshes twice a month, so check it before committing.

Other anti-bots: Cloudflare · DataDome · Kasada · Imperva  ·  PerimeterX targets: Walmart  ·  Hub: All anti-bot benchmarks