Firefox 155 brings AI-powered Smart Window to more countries

Firefox 155 is out, the first to arrive as part of the browser’s new twice-monthly release schedule. This update brings Firefox’s AI-powered Smart Window browsing mode to users in the USA, Canada and France. It’s still opt-in (for now), and is powered by your choice of AI model from Alibaba, OpenAI and Google. Mozilla’s also added changes to entice you to chat more (“personalised resume conversation starters”), made the assistant faster at responding with Exa web search citations and made the Smart Window Organise Tabs better at grouping related tabs. If none of that floats your boat, you can remove […]
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https://www.omgubuntu.co.uk/2026/09/firefox-155-released