How Multilogin Works (Antidetect Browser)
Multilogin is an antidetect browser built around two separate engines — Mimic and Stealthfox — that each run isolated browser profiles with their own fingerprints. Here's a neutral look at how it works, what it bundles, and what the company states about it.
Quick Answer
Multilogin runs isolated browser profiles using two engines — Mimic (Chromium-based) and Stealthfox (Firefox-based). Each profile carries its own fingerprint, can route through bundled or external proxies, and can be shared across a team or driven by automation frameworks.
- →Two engines: Mimic (Chromium) and Stealthfox (Firefox)
- →Automation via Selenium, Puppeteer, Playwright, and a rate-limited API
- →Built by Multilogin Software OÜ, registered in Tallinn, Estonia
This guide explains how Multilogin works as a product, not how to evade any specific platform. If you're new to the category, start with what an antidetect browser is. Several figures below come from Multilogin's own marketing, and we attribute those as vendor-stated rather than independently measured.
Who makes Multilogin
Multilogin is developed by Multilogin Software OÜ, a company registered in Tallinn, Estonia. It is positioned as an antidetect browser for managing many isolated browser profiles, each with its own fingerprint and network identity.
The product's core idea is profile isolation: each profile behaves like a distinct browser on a distinct machine, so cookies, storage, and fingerprint data do not bleed between them.
Two browser engines: Mimic and Stealthfox
Multilogin ships two distinct browser engines. Mimic is Chromium-based, and Stealthfox is Firefox-based. Running both means a profile can present either a Chrome-family or Firefox-family fingerprint depending on which engine it uses.
Multilogin advertises "55+ customizable fingerprint parameters" across its profiles — a vendor-stated figure covering the attributes a profile can spoof or randomize. The two-engine design is the structural foundation underneath those parameters.
Bundled proxies
Multilogin bundles its own proxies, including residential IPs with per-tier traffic allowances, so a profile can be routed through an included IP rather than only an external one. The capability is real; the quality and reach claims are vendor-stated.
Automation and API
Multilogin supports the common automation frameworks — Selenium, Puppeteer, and Playwright — so profiles can be driven programmatically rather than only by hand.
It also exposes an API with published per-tier rate limits, roughly 50–100 requests per minute depending on plan. Higher tiers raise the ceiling, so the API throughput you get scales with the plan you're on.
Team features and pricing
For teams, Multilogin offers role-based permissions and the ability to share cookies and sessions across team members, so a profile can be handed off without re-logging in from scratch.
As of 2026, Multilogin lists tiered monthly plans (roughly $11–$40/mo for 10–100 profiles, with higher business tiers), alongside a low-cost short trial. Pricing changes over time — check the official pricing page for current numbers.
Why mobile / CGNAT IPs are treated differently
An antidetect browser only controls the browser side. The IP it routes through still has to match the profile's claimed timezone and locale, and the IP's own reputation matters just as much as the fingerprint. Mobile carrier IPs sit behind Carrier-Grade NAT (CGNAT): thousands of real subscribers share one public address, so blocking it harms a crowd of humans rather than one bot.
Cloudflare quantified this in its October 29, 2025 blog, "detecting CGN to reduce collateral damage." Cloudflare reported CGNAT IPs were being rate-limited roughly 3× more often than non-CGNAT IPs despite showing lower bot activity, and built CGN detection to avoid penalizing the many humans on those shared addresses.
That is why mobile carrier IPs carry higher default network trust — and why the IP must line up with the browser profile's claimed timezone and locale to look consistent. See CGNAT and mobile proxies.
Sources
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