Mozilla has introduced new artificial intelligence functionalities in Firefox, ranging from the ability to find answers and organize tabs to performing searches within browsing history. These additions complement existing features, such as product comparison and summarizing web content.
These new capabilities are part of what is called Smart Window. Currently in beta phase, this feature operates separately from the main browser window and requires user activation, keeping the standard software experience unchanged.
However, the availability of Smart Window is restricted to tests conducted in the United States and Canada, and only in English, making it unavailable in Brazil.
The chatbot integrated into Firefox's Smart Window now has the ability to consult the internet, presenting the sources used and inserting the most relevant excerpts directly into the conversation. This feature is the result of a collaboration with the company Exa, which provides a unified artificial intelligence search API.
Another notable improvement is the tab grouping function. Using this tool, Firefox analyzes open pages and suggests thematic groupings, allowing users to organize websites and identify duplicates. An example provided by the developer illustrates how the browser can separate information into categories such as 'Running Shoes', 'Fourth Quarter Planning', and 'Trip to San Francisco.'
Additionally, the browser now allows AI to perform searches in browsing history using natural language. This means the user does not need to memorize the exact name or address of a visited page; they just need to type something like 'running shoes I saw last week' to see accessed sites, and Firefox also displays image previews to facilitate finding the desired item.
Mozilla plans to eventually release tools that assist in resuming 'browsing journeys' and automatically filling out forms based on relevant information.
The wave of generative AI has significantly impacted browsers, generating diverse approaches: Opera focused on agents, Google incorporated Gemini into Chrome, OpenAI developed and discontinued its own browser, while Vivaldi opted not to integrate AI.
Mozilla chose to adopt AI, but always emphasizing that the tools are optional. Despite this, the organization acknowledges encountering resistance among its user base. In February 2026, the developer responded to critics, stating that they heard both those who rejected AI and those who desired genuinely useful tools, announcing a centralized button to disable all artificial intelligence features of the browser.