Mozilla has promoted Firefox 149 to beta, following the Firefox 148 release with the new AI controls.

The main novelty of this version is the introduction of Split-View mode, which allows users to view two websites simultaneously within the same browser window. This feature is particularly useful for comparing information, translating pages, or working on multiple documents side by side.

Split-View mode complements existing Firefox features such as enhanced tracking protection, password management, and cross-device synchronization. Users can test the beta version of Firefox 149 and provide feedback to contribute to its development.