What does this Cookie Policy cover?
What types of technologies does LMArena use?
Why do we use cookies and similar technologies?
How can you manage your consent?
Details of Cookies and Similar Technologies
This Cookie Policy explains how Arena Intelligence, Inc. d/b/a LMArena (“LMArena”, “we”, “us” or “our”) uses cookies and other similar technologies on our websites that link to this Cookie Policy (the “Site”) as well as in our emails. It also outlines your choices around managing these cookies and similar technologies.
Please refer to our Privacy Policy for more information on our privacy practices.
Before we dive into the details – if you are just looking to manage your preferences on our Site relating to cookies and similar technologies (including opting-out), you can do so at any time through our Cookie Preference Centre here.
If you do not accept our cookies, you may experience some inconvenience in your use of our Site. For example, we may not be able to recognise your device and you may need to log in every time you visit our Site.
If you want to find out more about cookies and similar technologies on our Site and emails, please keep reading.
We may use any or all of the following “technologies” on our Site and in our emails:
Cookies: a cookie is a very small text file that may be placed on your browser or in the storage on your device. There are two types: “session cookies” and “persistent cookies”:
Session cookies are cookies that disappear from your device or browser when you close your browser.
Persistent cookies stay on your device even after you close your browser.
Please note that both LMArena and third-party service providers may set cookies on via our Site – these ‘third party cookies’ are set by domains other than those we control and may recognise your device across different websites.
Pixel tags:
A pixel tag is a single pixel, transparent GIF image with a unique identifier that can recognise certain types of data on your device (similar to how cookies do). They are used to operate and improve the Site and our email practices, including to help deliver cookies, count visits and understand usage and email campaign effectiveness.
For example, we may put pixel tags on emails to understand how you interact with that email – for example, whether you opened the email, whether you forwarded it, whether you clicked on a link in the email that directed you to our Site etc – these pixels may collect the time, location and operating system of the device you use to read the email.
Other similar technologies:
We may also use other tracking technologies, such as HTML5 local storage / local shared objects (which store relevant data locally on your device), for similar purposes as described in this Cookie Policy.
So, when we refer to cookies and “similar technologies” in this Cookie Policy, such reference includes reference to the pixel tags discussed above, HTML5 local storage / local shared objects and other equivalent tracking technologies.
The purposes for which we use technologies may fall into one of the following categories:
[Strictly necessary technologies: these technologies are essential in order to enable our Site to provide the function you have requested, such as by helping to ensure that the content of a page loads quickly and effectively.]
[Functionality technologies: these technologies allow us to provide enhanced personalisation and functionality, such as tailoring content to you, remembering your choices and preferences on the Site (e.g. language, text size, etc.) or remembering search parameters.]
[Analytics technologies: these technologies collect information on how users interact with our Site and enable us to improve how it operates and our business more widely. For example, we use Google Analytics and PostHog for this purpose. For more details about how Google uses data in the context of Google Analytics, please see here: www.google.com/policies/privacy/partners/. You can learn more about PostHog at https://posthog.com/.
[Social media technologies: these technologies are used when you share information using a social media sharing or “like” button on our Site or social media platform.]
A full list of the technologies we use can be found in the section titled: Details of Cookies and Similar Technologies.
You can control or limit how cookies and similar technologies are used by taking the following steps:
Managing your preferences on our Site (including by opting-out) at any time by using our Cookie Preference Centre here.
Pixel tags in emails can typically be blocked by default by configuring your preferences in your email us to block external images or setting it to show “plain text only” emails.
For more information about cookies, including about the cookies have been set on your device and how to manage and delete them, visit www.allaboutcookies.org.
Please click here to view details of the specific cookies and other similar technologies that we use. The details shown at this link (including the cookies and other similar technologies shown there) may change over time.
Information about the cookies and similar technologies we use may be updated from time to time, so please check this Cookie Policy on a regular basis for any changes.
If you have any questions about this Cookie Policy, please contact us by email at [email protected].
LAST UPDATE: 2025-05-22