What's the Latest Version of Yandex User Agents?

What's the Latest Version of Yandex User Agents?

As of July 2026, the latest Yandex Browser releases are 26.6.0.1845 for Windows and macOS, 26.6.5.525 for iOS, and 26.6.3.115 for Android. On Windows, macOS, and Android these builds run on the Chromium 150 engine, while the iOS build uses Apple's WebKit as the platform requires. Each release improves performance, security, and web-platform compatibility. The tables at the top of this page are pulled from live data and always show the exact current build.

Latest Yandex Browser User Agents by Operating System

Below are the most recent Yandex Browser user agent strings for each major platform, ready to copy and paste into your testing tools, analytics filters, or device-detection logic. Use this as a quick reference for the single latest active Yandex Browser UA on Windows, macOS, Android, and iOS.

How the fragments change across platforms:

• Platform token: identifies the OS and CPU - Windows NT 10.0; Win64; x64 on Windows, Macintosh; Intel Mac OS X 10_15_7 on macOS, Linux; arm_64; Android 17; SM-G965F on Android, and iPhone; CPU iPhone OS 18_7_8 like Mac OS X on iOS.
• Chromium fragment: on Windows, macOS, and Android the Chrome/150.0.0.0 token reports the underlying Chromium version. On iOS this token is absent because Yandex Browser is required to use Apple's WebKit engine, so you will see Version/26.0 instead.
• YaBrowser fragment: YaBrowser/26.6.x is the one token present on every platform, making it the most reliable signal for detecting Yandex Browser regardless of operating system.
• Extra tokens: desktop strings add Yowser/2.5, Android adds Mobile, and iOS adds Mobile/15E148.

Note: the version numbers above are indicative and refreshed periodically. The live tables at the top of this page always reflect the exact current Yandex Browser build.

Yandex User Agent Format

Example: Mozilla/5.0 (Platform; OS Version; Architecture) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/ChromeVersion YaBrowser/YaBrowserVersion Safari/537.36

Breakdown:

• Mozilla/5.0:

Indicates compatibility with Mozilla-based browsers.

• Platform:

Specifies the operating system and architecture (e.g., Windows NT 10.0; Win64; x64).

• AppleWebKit/537.36:

The rendering engine, shared with browsers like Chrome and Safari.

• Chrome/ChromeVersion:

The version of the Chromium engine Yandex is based on.

• YaBrowser/YaBrowserVersion:

The specific version of Yandex Browser.

• Safari/537.36:

Indicates Safari compatibility.​

How to Modify Yandex's User Agent

• DevTools:
• Press Ctrl + Shift + I (Windows/Linux) or Command + Option + I (Mac) to open Developer Tools.
• Go to the Network tab.
• In the top menu, click on Network Conditions (if it's not visible, click on the three-dot menu > More Tools > Network Conditions).
• Uncheck Use browser default under User agent.
• Select a custom Yandex User Agent string from the dropdown or type in your own custom string.
• Extensions:

You can use extensions like User-Agent Switcher to easily change the User Agent string without needing to dive into Developer Tools.

How to Check Yandex's User Agent

• Via Browser:

Open Yandex and navigate to yandex://about → Look for the User Agent string under the Browser Details section.

• Using JavaScript:

Open Developer Tools by pressing F12 (Windows/Linux) or Command + Option + I (Mac), go to the Console tab, and type: navigator.userAgent; Press Enter to display the full Yandex User Agent string.

Yandex Search Bot User Agents (Robots & Crawlers)

Yandex crawls the web with a family of specialized robots, not a single bot. If you are trying to identify legitimate Yandex traffic in your server logs or configure crawl rules in robots.txt, match against the user agents below. Every genuine Yandex crawler includes the +http://yandex.com/bots identifier.

In robots.txt, Yandex looks for a record whose User-agent contains the substring "Yandex" (case-insensitive) or "*". A single "Yandex" rule applies to every crawler in the family, while a more specific name lets you target one crawler:

User-agent: Yandex
Disallow: /private/
Allow: /

User-agent: YandexImages
Disallow: /photos/

Verify before you trust the string: user agents can be spoofed, so confirm a request really comes from Yandex with a reverse DNS lookup on the source IP. Genuine Yandex robots resolve to a host ending in .yandex.ru, .yandex.net, or .yandex.com, and a forward DNS lookup of that host should return the same IP.

Yandex Browser User-Agent Client Hints (UA-CH)

Because Yandex Browser is built on Chromium, it follows the same industry-wide shift away from the long, detail-packed user agent string toward User-Agent Client Hints (UA-CH). Chromium now freezes and reduces the information in navigator.userAgent and moves the finer detail into a set of on-demand HTTP request headers instead. If your device detection relies only on the raw UA string, plan to read these headers as well.

Three low-entropy hints are sent by default on every request:

• Sec-CH-UA - the browser brand and significant version list, e.g. "Chromium";v="150", "YaBrowser";v="26.6", "Yandex";v="26.6", "Not.A/Brand";v="99"
• Sec-CH-UA-Mobile - whether the browser is on a mobile device: ?0 for desktop or ?1 for mobile.
• Sec-CH-UA-Platform - the operating system, e.g. "Windows", "macOS", or "Android".

A typical set of request headers from a desktop Yandex Browser looks like this:

Sec-CH-UA: "Chromium";v="150", "YaBrowser";v="26.6", "Yandex";v="26.6", "Not.A/Brand";v="99"
Sec-CH-UA-Mobile: ?0
Sec-CH-UA-Platform: "Windows"

Higher-entropy details - such as Sec-CH-UA-Platform-Version, Sec-CH-UA-Full-Version-List, Sec-CH-UA-Arch, and Sec-CH-UA-Model - are not sent automatically. Your server requests them by returning an Accept-CH response header, and client-side code can read them with navigator.userAgentData.getHighEntropyValues().

Note that Client Hints are a Chromium feature. The desktop and Android builds of Yandex Browser expose them, but the iOS build runs on WebKit and does not send Sec-CH-UA headers - for iOS you still need to parse the classic user agent string.

What is my User Agent?