AdsPower vs Multilogin: Antidetect Browser Comparison

An antidetect browser gives every profile its own device identity: canvas and WebGL hashes, AudioContext output, font list, screen metrics, timezone, locale, User-Agent and matching client hints, each with its own cookie jar and storage. Two profiles on one laptop should read as two machines to a tracking script, not one machine in two windows.

Both products do that. They are ordinary infrastructure for multi-account management, ad verification, localization QA, competitive research and privacy work, and they are also used for fraud, which is why detection vendors invest heavily in catching them.

AdsPower's homepage claims 9,000,000+ users across 235 countries and regions as of August 2026, and its pricing page names SUNFLOWER TECH PTE. LTD. as the operator. Its centre of gravity is social and e-commerce account operations: many profiles, many human operators, batch actions.

Multilogin has been in market since roughly 2015 and is the reference implementation the category gets measured against. Multilogin X replaced the old Multilogin 6 desktop app with a web interface and an API-first architecture. Its centre of gravity is scripted work and governed teams.

One compliance note, stated once: many platforms restrict or prohibit multi-accounting in their terms of service, and some jurisdictions regulate automated account creation. Read the terms for the platform you operate on.

Pick AdsPower if the work is done by people. Operators who post, warm up and moderate across dozens of accounts get more done per hour with a no-code RPA recorder and batch window control than with hand-written Playwright scripts. Its pricing page listed a free tier of 2 profiles in August 2026, so trialling it is cheap.

Pick Multilogin if the work is done by code, or if a compliance officer will eventually ask where the data lives. API-first design, remote WebDriver, an EU vendor relationship and a longer track record matter more than click ergonomics once a scheduler drives your profiles.

Do not pick either on fingerprint quality alone. Academic testing of ten antidetect browsers found nine detectable in production conditions (Browser Polygraph, ACM IMC 2024). The variable you control is operational: whether each profile is consistently paired with the right network path, and whether the tool fits how your team works.

Vendor pricing and packaging in this category change often. Every figure above was read off the vendors' own pages on 18 August 2026 and should be re-checked before you buy.

AdsPower ships two kernels it calls SunBrowser (Chromium lineage) and FlowerBrowser (Firefox lineage). Multilogin ships Mimic (Chromium) and Stealthfox (Firefox), with Mimic as the current default and Stealthfox positioned as the legacy option.

The structural point is the same for both: spoofing is compiled into the browser rather than injected as JavaScript at page load. Injection leaves traces. A script can compare a function's toString() output against the native pattern, check property descriptors on navigator, or time the getter. A patched kernel returns the modified value from inside the engine, so there is nothing on the page to catch. Anyone still overwriting window.navigator from a content script is selling you 2019.

What differs is coverage, not approach, and coverage moves every Chrome release. Neither vendor publishes a signal-by-signal changelog you can audit, so treat "more signals spoofed" claims from either side as marketing until you test them.

Two things neither product fixes, and both are common reasons a profile burns:

The first is the network layer. The fingerprint says "Windows 11 desktop in Munich" and the IP says whatever your proxy says. When those disagree the profile is more suspicious than a plain Chrome window would have been, because a real user in Munich does not present a Berlin timezone on a Sao Paulo IP. Our primer on browser fingerprinting covers the signals both tools try to control.

The second is the transport. TLS fingerprinting reads the ClientHello before a byte of JavaScript runs. A Chromium-lineage kernel produces a Chromium-lineage handshake, fine as long as the User-Agent it presents is also Chromium and roughly the right version. Set a Safari User-Agent on a Chromium kernel and you have built a contradiction no amount of canvas noise repairs.

This is the sharpest difference between the two, and it only shows up when you try to build something.

AdsPower: a local API on the operator's machine

AdsPower exposes a REST API on loopback. You start a profile and get back the connection details for your automation framework, per its Local API documentation:

GET http://127.0.0.1:<port>/api/v1/browser/start?user_id=<profile_id>&headless=0

{
  "code": 0,
  "msg": "success",
  "data": {
    "ws": {
      "selenium": "127.0.0.1:xxxx",
      "puppeteer": "ws://127.0.0.1:xxxx/devtools/browser/xxxxxx"
    },
    "debug_port": "xxxx",
    "webdriver": "C:\\...\\chromedriver.exe"
  }
}

Note the webdriver field. AdsPower hands you a path to a local ChromeDriver binary, and the WebSocket endpoints are loopback addresses. Attaching from Playwright is a two-line job once the profile is running:

import requests
from playwright.sync_api import sync_playwright

LOCAL_API = "http://127.0.0.1:50325/api/v1"  # confirm YOUR port in the client's settings

r = requests.get(f"{LOCAL_API}/browser/start",
                 params={"user_id": "PROFILE_ID", "open_tabs": 1}).json()
ws = r["data"]["ws"]["puppeteer"]

with sync_playwright() as p:
    browser = p.chromium.connect_over_cdp(ws)
    page = browser.contexts[0].pages[0]
    page.goto("https://www.sparkproxy.io/")
    print(page.title())

requests.get(f"{LOCAL_API}/browser/stop", params={"user_id": "PROFILE_ID"})

The consequence is architectural. Your orchestrator must run on the same host as the AdsPower client, or tunnel to it. Scaling means adding workstations or VMs, each with a client installed and logged in. Fine at 30 profiles on four operator machines. At 800 profiles it is a fleet of Windows VMs to patch, monitor and pay for, and that cost never appears on the pricing page.

Multilogin: remote WebDriver, and only remote

Multilogin X publishes its endpoints as a Postman collection and supports Selenium, Playwright and Puppeteer. Its automation FAQ carries a constraint worth quoting because it breaks first-time integrations: Selenium, Puppeteer and Playwright work only with remote WebDriver, and a local WebDriver breaks automation.

If you have an existing scraping stack, this is the line that decides your afternoon. Code doing webdriver.Chrome(service=Service(...)) becomes a remote session pointed at Multilogin's agent. Once converted, the same script runs against any profile from any host that can reach the agent, which is what you want in CI or on a scheduler.

So: AdsPower is easier to attach to on day one and harder to scale on day 200. Multilogin costs a refactor up front and then stops being an infrastructure problem.

RPA, and who it is really for

AdsPower's RPA builder is a genuine differentiator, not a checkbox. You record or assemble a flow (log in, open a page, fill a form, upload, post), then run it across a selected set of profiles, with a template marketplace for common platform flows. For a team whose bottleneck is operator hours rather than engineering hours, that is the whole value proposition.

The limit is the usual no-code limit. RPA flows are brittle against DOM changes, painful to diff and review, and they do not live in your Git history. If you already have engineers, a Playwright script is more maintainable. If you do not, RPA is the difference between shipping and not shipping.

AdsPower's Multi-Windows Synchronizer mirrors your input across many open profiles at once. Type once, type everywhere. Its homepage claimed a 10x efficiency increase in August 2026, and for bulk warm-up that is not an exaggeration.

Here is the part that goes unmentioned. Antidetect browsers separate device identity. The Synchronizer deliberately makes behaviour identical. Fifty profiles clicking the same coordinates in the same order with sub-millisecond timing deltas are fifty devices behaving like one hand. Mouse movement, scroll cadence, keystroke intervals and dwell time are all measurable from JavaScript, and behavioural correlation is a well-established linkage channel precisely because it survives fingerprint randomisation.

You have not defeated linkage. You moved it to a cleaner signal.

Use the Synchronizer where uniformity is normal anyway: bulk settings changes, warm-up browsing on neutral sites, batch logouts. Avoid it for the actions a platform scores, which are posting, following, commenting and checkout. Those want staggered timing and per-profile variation, which means a script with jitter rather than mirrored clicks.

Multilogin has no equivalent feature, which is either a gap or a guardrail depending on what you were about to do with it.

Both support HTTP, HTTPS and SOCKS5 per profile with per-profile credentials, and both let you bring your own. The difference is that Multilogin bundles proxy traffic into its plans and AdsPower does not.

Bundled traffic reads like a strong differentiator. Divide it and it looks different. Using the figures published on Multilogin's pricing page as of 18 August 2026:

That is division on their published numbers, not a measurement of their network. The pattern is what matters: the per-profile allowance shrinks as you scale, from roughly 102 MB on Pro 10 to roughly 34 MB on Business 300. A single logged-in session on an image-heavy social feed can move tens of megabytes, so on the larger plans the bundle covers something on the order of one or two real sessions per profile per month.

Bundled traffic is a sampler, not an operating supply. It is useful for evaluation, for low-traffic profiles that only check a dashboard, and for the occasional emergency login. Budget a separate proxy plan for anything else, on either product.

What actually matters for proxy pairing, and it is identical for both tools:

• One profile, one exit, permanently. Rotating a profile's IP between sessions is the fastest way to get it challenged. Use a sticky session proxy with the longest hold your provider offers, or a static assignment.
• Timezone from IP, always. Both derive profile timezone from the proxy exit. Turn it on. Manually set timezones drift the moment you re-assign an IP.
• WebRTC set to match the proxy, not disabled. A browser refusing WebRTC entirely is rarer than one reporting a plausible address, and rare is what you were trying to avoid.
• Locale and Accept-Language coherent with geography. A German exit sending en-US,en;q=0.9 with no de anywhere is a contradiction a rules engine expresses in one line.
• Match network type to platform tolerance. Guarded consumer platforms weigh mobile and residential ranges very differently from datacenter ranges. Our guide to mobile proxies for social media automation covers why carrier-NAT addresses behave the way they do.

For ad verification, the same coherence rules apply for a different reason: an incoherent profile gets served the wrong campaign, which corrupts your data rather than your account. We cover that workflow in how brands use proxies for ad verification.

Multilogin publishes a straightforward ladder. As of 18 August 2026 its pricing page lists a free tier at 5 profiles with 200 MB of one-time traffic and 30 cloud phone minutes, then Pro tiers billed annually at $85/year for 10 profiles, $230/year for 50 and $320/year for 100, with team seats rising from 1 to 5 and monthly traffic from 1 GB to 5 GB. Business starts at $685/year for 300 profiles with unlimited seats and 10 GB per month. Monthly billing costs more.

AdsPower's pricing page on the same date lists a permanently free tier of 2 profiles, then Professional, Business and Enterprise tiers where you configure profile count (10, 20, 50 or 100 on Professional, higher on Business, 5000+ on Enterprise) and team member count, with quarterly and annual discounts and several display currencies. Its plan prices come from a configurator rather than a static table, and we could not read a fixed figure we would be willing to print, so we are not going to invent one. Price it for your own profile and seat count.

Three things neither price list shows:

Seats are the hidden multiplier. Both charge for team members above the included count. A 60-profile operation with 8 operators can cost more than a 200-profile operation with 2.

AdsPower's real cost includes hosts. Its loopback-bound API means every parallel operator or automation lane needs a machine running the client. Add that VM cost before you compare.

Multilogin's real cost includes a refactor. An existing Selenium or Playwright codebase on local drivers has to be converted to remote WebDriver. Price that as onboarding.

Pricing in this category moves often and both vendors have repriced within the last two years, so re-check both pages before committing.

Both support role-based access, per-profile sharing and activity logs. AdsPower's stated pitch is that permissions keep account assets traceable and reduce losses from account leakage, which is the correct framing: in multi-account work your largest realistic loss is an operator walking out with cookies, not a detection engine catching a canvas hash.

The differentiator that rarely appears in comparisons is jurisdiction. Multilogin is an EU company. AdsPower is operated by SUNFLOWER TECH PTE. LTD., a Singapore-registered entity, per its own pricing page. Cloud-stored profiles hold session cookies and, in agency work, client credentials. If you handle EU client data, your processor's location and transfer mechanism are a real question under Chapter V of the GDPR, and "we picked the browser with the better RPA builder" is not an answer a client's legal team enjoys.

This will not matter to a solo affiliate. It will matter the first time an enterprise client sends you a vendor security questionnaire.

Run this on both free tiers, on the same afternoon, against your own targets. It settles more than any review.

1. Create two profiles per tool and assign each a different proxy exit in two countries.
2. Check coherence. Open a fingerprint reporting page in each profile and confirm timezone, locale, WebRTC and geolocation agree with the proxy country. If they do not out of the box, count the settings you had to touch. That number is your per-profile setup cost times your profile count.
3. Log in to one real, low-value account per profile on the platform you actually operate on. Not a test site: detection behaviour on a live consumer platform bears no relation to a demo page.
4. Leave them 24 hours, then log in again. Session persistence across a restart is where cheap tools fail and both of these should pass.
5. Attach your automation. For AdsPower, hit /api/v1/browser/start and connect Playwright over CDP. For Multilogin, stand up a remote WebDriver session. Time both. Whichever took an hour will take a week at scale.
6. Capture a control. Fetch the same target page from outside both browsers, for a clean reference of what a plain client in that country is served.

Step 6 is easy to skip and worth five minutes. A rendered baseline tells you whether a difference is a detection response to your profile or ordinary geo-personalisation. SparkProxy's Scraping API does it in one call:

import requests

r = requests.get(
    "https://scrape.sparkproxy.io/api/v1",
    headers={"X-API-Key": "sk-xxxxxxxxxxxxxxxx"},
    params={
        "url": "https://example.com/target-page",
        "render_js": "true",
        "premium_proxy": "true",
        "country_code": "de",
        "format": "md",
        "json_response": "true",
    },
    timeout=120,
)
data = r.json()
print(data["status_code"], data["credits_used"], data["meta"]["title"])

format: "md" returns readable Markdown instead of raw HTML, which makes diffing two captures far less painful than diffing minified DOM. The full parameter list is in the SparkProxy Scraping API docs. Run the call once per profile country and keep the outputs as your control set.

AdsPower suits you if operators outnumber engineers: social media teams, marketplace sellers running multiple storefronts, agencies where account managers work accounts by hand, and anyone whose automation need is "repeat this sequence across 40 profiles" rather than "integrate with our pipeline". The RPA builder and template library are the reason to be here. Treat the Synchronizer as a power tool with a guard removed.

Multilogin suits you if code is the primary user or governance is a live requirement: scraping and QA teams with an existing Playwright or Selenium stack, agencies handling EU client data, operations where a scheduler rather than a person opens the profiles. The remote-WebDriver constraint is an up-front cost that buys host independence later.

Neither is a proxy strategy. Both sell device identity. The IP behind each profile is still your problem and it decides most outcomes. A perfectly configured profile on a shared datacenter range the platform already distrusts will fail, and no fingerprint setting fixes that.

Still deciding at the category level? Start with the antidetect browser roundup and narrow from there.