Nstbrowser Alternatives: Antidetect Browsers Compared

Most antidetect browsers bill for how many profiles you are allowed to store. Nstbrowser's published plans barely constrain storage. What they meter is launches per day.

Read from nstbrowser.io/en/pricing, September 2026. The page offers 10% off quarterly and 40% off annual billing.

Three details on that page decide your real bill, and they are easy to skim past.

A launch is counted once per profile per day. Their own note says launching the same profile several times in one day counts as a single launch, and the counter resets daily. So the number that matters is distinct profiles opened per day, not sessions.

There are two profile types. A Standard Profile keeps cookies, logins and fingerprint across launches. A Once Profile is a fresh environment wiped at session end, meant for scraping. Once launches draw on your included quota first and then bill at a lower rate: $0.008 on Starter, $0.005 on Growth, $0.004 on Scale.

Overages are on by default. The FAQ says you can keep working past the plan limit and the excess is invoiced. That is friendly for a spike and dangerous for a runaway loop.

The page also lists bundled proxy traffic on paid plans (1 GB a month on Starter, 1.5 GB on Growth, 2 GB on Scale, per residential, IPv6 and datacenter pool), per-thousand CAPTCHA solving prices, and a cloud Browserless allowance on the free plan of 2 concurrent sessions and 10 session hours at $0.4 per extra hour.

One warning before you model anything: Nstbrowser's homepage copy still describes a free subscription with "up to 1000 environment launches per day", while the pricing page says 30. Trust the pricing page, and screenshot it on the day you subscribe.

The complaints that push people off Nstbrowser are specific, and each points to a different replacement.

• Launch quotas do not match the workflow. An agency opening 60 client accounts a day fits the free plan's 500 profiles and hits its 30-launch cap by mid-morning. Tools that bill per profile or per concurrent browser make that pattern cheaper to reason about.
• The overage bill surprised them. Automation that opens Once Profiles in a loop can burn through a daily quota without anyone watching. Pricing with a hard ceiling feels safer to some finance teams than pay-as-you-go.
• They wanted one product and got two. Buyers who only manage accounts pay for Browserless and CAPTCHA pricing they never touch. Buyers who only scrape pay attention to a desktop client they never open.
• Procurement asks for assurance. Nstbrowser's pricing page does not advertise a third-party security audit. If a client questionnaire is driving the move, that narrows the field fast.

If none of those describe you, the honest conclusion may be that Nstbrowser's Scale plan at $89.9 for 50,000 daily launches is already the cheapest shape for your usage. Nobody else in this comparison prices high-volume launching that low.

If you use both halves of Nstbrowser heavily, expect to replace it with two vendors. That is not a failure of the search. It is the honest price of unbundling.

These tools sell a stable device identity per account. Each has a different idea of what the scarce resource is.

Kameleo: concurrency is the price tag

Kameleo bills for how many browsers can be open at once, which is closer to Nstbrowser's usage-based thinking than a profile counter is.

Read from kameleo.io/pricing, September 2026. Local profiles are listed as unlimited and paid plans list unlimited team members.

Pick it when your team opens many accounts but only a handful at the same moment. Ten concurrent browsers can cycle through hundreds of accounts in a day with no launch counter. Skip it when you need 50 profiles open simultaneously on a small budget, because the jump from Startup to Business is steep. Our Kameleo alternatives page covers where it falls short.

Multilogin: small printed tiers and bundled mobile minutes

Multilogin's published Pro tiers are $11 a month for 10 profiles, $19 for 20 and $29 for 50 on monthly billing, with larger discounts on annual terms, 1 to 3 GB of monthly proxy traffic and cloud phone minutes included. The free plan gives 5 profiles and a one-time 200 MB of traffic but no API access. Business tiers carry unlimited team seats.

Pick it when you run a few dozen high-value accounts and want mobile and desktop profiles in one place. Skip it when you are opening thousands of profiles, where Nstbrowser's launch pricing is far cheaper than any per-profile ladder.

GoLogin: a profile slider with cloud launches

GoLogin now prices Professional on a slider from 10 to 100 profiles. The lowest figures it prints are $9 a month billed monthly or $4.50 on annual billing, rising as you add profiles, with Business, Enterprise and Custom tiers above it and a 3-profile free plan. Every tier lists a fixed number of parallel cloud launches, so profiles can run without your laptop awake.

Pick it when you are a solo operator who liked Nstbrowser's cloud angle but wants a simple monthly number. Skip it when you need several teammates, since its plan cards list one team member across tiers.

AdsPower: the synchronizer and RPA crowd

AdsPower still prices through a configurator driven by profile and member counts, with 2 free profiles and Enterprise on request. It belongs here for one reason: its no-code RPA builder and window synchronizer. If your operators click rather than script, that is the closest thing to Nstbrowser's RPA feature set. We covered the trade-offs, including its January 2025 extension supply-chain incident, in AdsPower alternatives.

If you mostly used Nstbrowser's Browserless product or Once Profiles, you are shopping for a hosted headless browser. These are priced in time, not launches.

Browserless: 30-second units

Browserless defines a unit as a browser started through its API and used for up to 30 seconds, with a new unit charged for every further 30 seconds of a running session.

Read from browserless.io/pricing, September 2026. Their page also lists residential proxy traffic at 6 units per MB and datacenter at 2 units per MB, and says monthly billing costs more than the annual rates shown.

Pick it when your pages load and extract in under 30 seconds and you want Puppeteer or Playwright pointed at a WebSocket with no desktop in the loop. Skip it when sessions are long, because time pricing punishes a checkout flow that sits on a page for two minutes.

Browserbase: browser hours and agent tooling

Browserbase publishes a free plan with 1 browser hour and 3 concurrent browsers, Developer at $20 a month for 100 browser hours and 25 concurrent browsers (then $0.12 per hour), and Startup at $99 for 500 hours and 100 concurrent browsers (then $0.10 per hour), with Scale on custom terms. Paid plans include 1 GB or 5 GB of proxy traffic, with overage listed at $12 and $10 per GB. It is aimed squarely at AI agent builders.

Pick it when sessions are long or unpredictable and you want hour-based billing. Skip it when you push heavy traffic through its bundled proxies, because $10 to $12 per GB overage is several times what standalone proxy traffic costs.

No browser at all

A lot of what people run through Once Profiles does not need a fingerprinted browser. If the page renders server-side, or the data sits in a JSON endpoint, a plain HTTP client through a proxy is cheaper by an order of magnitude. If it genuinely needs JavaScript, a scraping API with rendering can replace the whole browser fleet. Our cloud antidetect browsers guide explains where hosted fingerprinted browsers still earn their cost.

Launches, units and hours cannot be compared on sticker price. So here is one workload priced through each. These are illustrative assumptions, not measurements, chosen to show how the models diverge.

The workload: 10,000 disposable scraping sessions per day, 30 days a month, each session under 30 seconds from start to close. That is 300,000 sessions a month and roughly 2,500 browser hours.

Now double the session length to 60 seconds and watch what moves. Nstbrowser stays at $89.9, because a launch is a launch however long it runs. Browserless doubles to 600,000 units and needs overage on Scale. Browserbase doubles to 5,000 hours, about $549.

Then change the other variable. Keep sessions at 30 seconds but reuse 200 Standard Profiles all day instead of minting fresh ones. On Nstbrowser that collapses to 200 launches a day, because repeat launches of the same profile count once, so Starter at $29.9 covers it with 2,800 launches to spare. Time-billed services charge the same as before because the hours did not change.

The pattern is the whole buying rule. Launch pricing rewards long sessions on few profiles. Time pricing rewards short sessions on many. Plan picks such as Starter versus Scale matter less than which of those two shapes your workload has. The numbers in your bill will differ from these, so measure average session length and distinct profiles per day for one week before signing anything.

Nstbrowser bundles several things that alternatives sell separately or not at all.

The CAPTCHA line deserves a second look. If your automation depends on solving at volume, check the per-thousand rate on Nstbrowser's page against a standalone solver before you assume switching saves money. The browser subscription is often the smaller part of the bill.

The two lanes migrate differently.

For persistent accounts, the risk is a device change. No antidetect browser exports a fingerprint another vendor can import. Cookies and local storage move; canvas, WebGL, audio and TLS characteristics do not. Each rebuilt profile looks like a new device to the platform.

1. Export cookies from Nstbrowser before your subscription lapses, since profile data sits behind an active plan.
2. Record which proxy each Standard Profile used, and keep that exit IP through the move. Change the device or the network, never both on the same day.
3. Rebuild in small cohorts and match the operating system the old profile reported.
4. Browse passively for a few sessions before posting, paying or editing account settings.
5. Keep Nstbrowser on its monthly rate for one cycle as a rollback.

For automation, the risk is silent data loss. A pipeline that worked through Nstbrowser's CDP endpoint will connect to Browserless or Browserbase with a changed WebSocket URL, but success rates may shift because the fingerprint and exit IPs changed. Run both side by side on the same URL list for a few days and compare status codes, empty extractions and CAPTCHA frequency before cutting over. Our guide on detecting when a scraper is blocked lists the signals worth logging.

Every alternative in this post either ships no proxies or bundles a sampler. Nstbrowser's own 1 to 2 GB a month disappears fast on image-heavy pages, and the replacements are no more generous. Plan to buy the network separately, and pick the proxy type by lane.

Account lane: one exit IP per profile, held for the life of the account, with geography matching the profile's timezone and language. Guarded consumer platforms often expect residential or mobile addresses. SparkProxy does not sell those, and a datacenter IP will not pass where a platform blocks hosting ranges. Datacenter exits do fine for ad checks, SERP views, marketplace research and localization QA. Why antidetect browsers need proxies walks through the matching rules.

Automation lane: rotate. Disposable sessions want a fresh exit per session, and bandwidth-metered proxies punish heavy rendered pages. That is where a flat, unmetered datacenter plan makes sense. SparkProxy's plans run from Starter at $75 a month for 100 threads to Plus at $440 for 1,000 threads, all with unlimited bandwidth and 30-day validity, across 1M+ datacenter IPs in 80+ countries.

Verify the exit before you wire it into any browser:

# Rotating HTTP/HTTPS gateway: a different exit on each request
curl -x http://USER:PASS@gateway.sparkproxy.io:11000 https://api.ipify.org
curl -x http://USER:PASS@gateway.sparkproxy.io:11000 https://api.ipify.org

# Sticky sessions port, for a profile that must keep its address
curl -x http://USER:PASS@gateway.sparkproxy.io:11002 https://api.ipify.org

# SOCKS5, resolving DNS at the exit rather than on your machine
curl -x socks5h://USER:PASS@gateway.sparkproxy.io:13000 https://api.ipify.org

For a Playwright script pointed at a hosted browser, the proxy usually goes into the session create call rather than the browser launch flags. Check each vendor's docs for where they accept an external proxy, because Browserless and Browserbase both distinguish their bundled network from bring-your-own.

• You open a few hundred accounts a day and keep them for months: Kameleo Startup, if ten concurrent browsers cover your peak. Otherwise stay on Nstbrowser and size the launch quota properly.
• You run a small set of valuable accounts and want mobile too: Multilogin Pro 20 or Pro 50.
• You are solo and want the simplest monthly price: GoLogin Professional at the profile count you actually use.
• Your operators click through repetitive tasks: AdsPower for its RPA and synchronizer.
• You scrape with short sessions at high volume: Browserless, or keep Nstbrowser Scale if your sessions are long, since the launch model wins there.
• You build AI agents with long, unpredictable sessions: Browserbase.
• Your pages do not need a browser: drop the browser layer and use rotating proxies or a scraping API.

For a wider survey of the account-management side, our top antidetect browsers roundup ranks features across a longer list.