Firefox 157 is rolling out a major redesign across desktop and mobile, bringing rounded "bubble" tabs, a curved address bar, refreshed icons and colors, and a more consistent visual language across devices. Mozilla is also adding more themes and wallpapers while bringing back Compact Mode, which the company says "reduces the size of your tabs and toolbar to give more of your screen to the web, with an auto-compact option for smaller screens." The Verge reports: According to Mozilla, the design changes will have "no cost to your browser performance." Mozilla says the overhauled design is a "renewal" for Firefox, following major updates over the last year, like homepage widgets, Split View, a built-in VPN, and controls for disabling the browser's AI features.

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An anonymous reader quotes a report from CNBC: Mistral Chief Executive Arthur Mensch has accused leading global artificial intelligence companies of using the debate over the safety of the technology as a cover-up for their "negligence." "The debate that we've seen in the U.S. has been a cover for the negligence of some of our competitors," Mensch told CNBC's Annette Weisbach, adding that it was necessary to make systems that can contain the AI agents. [...] "When you give them a lot of tools, those systems [AI agents] are very dynamic, so they can go and do things that you do not expect," Mensch told CNBC. "You need to have the right monitoring in place, and the enterprises we work with, we give them those kind of monitoring systems," he said. Mistral also develops AI models but takes a different approach to OpenAI and Anthropic by working with individual companies to create custom AI tools to suit their needs and integrate them with their businesses. But unlike its competitors, Mistral has no plans to slow down development of advanced models. The lead that U.S. labs have is "not extremely large," Mensch said, adding that his company was confident that its next-generation model will close the gap "very significantly." "We have been raising the capital needed to scale the compute that we need to train bigger and more powerful models, in order for us to own our own destiny," he said. Earlier this month, Mistral raised 3 billion euros ($3.5 billion) in fresh funding led by memory chip giant Samsung, as it looks to position itself as a European alternative to rivals like OpenAI and Anthropic.

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OpenAI a tenu ce 29 septembre son DevDay 2026. Au programme : dots, des agents IA toujours actifs, un nouveau modèle GPT-6.1 Sol, des outils collaboratifs pour concurrencer Microsoft et Google, et un abonnement à 500 dollars par mois. Le premier appareil conçu avec Jony Ive, lui, se fait toujours attendre.

In addition to the company's GPT-6.1 Astra announcement, OpenAI announced always-on AI agents called "Dots" that can proactively use a computer and connected apps to research, draft documents, write software and handle other tasks on a user's behalf. "OpenAI said it would roll out Dots to paid users starting Tuesday," reports Bloomberg. "Initially, OpenAI said, each user will have access to a single 'dot' that can act as an assistant. Over time, the company expects users to manage a slew of them." From the announcement: Dots are frontier intelligence that have your back. Powered by GPT-6 Astra, they have their own cloud computer, learn from feedback over time, and can work towards your goals 24/7. Through our ecosystem of plugins, they can readily connect to over 4,000 apps, giving them the tools to help wherever you need them. Your dot is always within reach, whether it is through ChatGPT, Slack, or Teams. You can ask questions, explore ideas, and give feedback along the way; or you can simply hop on a voice call when you need to talk something out. The more you work together, the more your dot learns your preferences, how you think, and what good looks like to you. The magic of dots is when they bring you work done the way you would do it, sometimes before you even think to ask. With dots alongside you, ambitious ideas and projects you haven't had the time or support to pursue start to feel achievable.

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Sept jours seulement après GPT-6 Sol, OpenAI annonce déjà son successeur : GPT-6.1 Sol, toujours cinq fois moins cher que son modèle phare GPT-6 Astra. La course au meilleur modèle n'en finit plus.

OpenAI répond à Meta et à son agent Muse avec « dots », le nom donné à son service d'agents « toujours actifs » qui travaillent pour leurs utilisateurs en permanence. Les dots se différencient de ChatGPT grâce à leur propre ordinateur dans le cloud et leur accès permanent à vos comptes, tout en étant joignables depuis n'importe quelle messagerie.

Le 28 septembre 2026, OpenAI a proposé que tout entraînement de ses modèles d'IA les plus avancés soit précédé d'un dossier démontrant que les risques sont maîtrisés.

OpenAI organise ce mardi 29 septembre 2026 son Dev Day et promet « plus de 20 lancements ». Parmi les annonces attendues : les rumeurs parlent d'un agent IA baptisé « Dots » et, peut-être, d'un premier aperçu de l'appareil conçu avec Jony Ive. La conférence est à suivre en direct sur Numerama.