L'IA est désormais capable de résoudre des problèmes mathématiques d’une complexité inédite, jusqu'à révolutionner la discipline. Et tout indique que ce n'est qu'un début. Va-t-on vers des modèles qui finiront par remplacer les humains ? Entretien avec Gabriel Peyré, directeur scientifique de...
A developer building a temperature monitor app for their Apple computer recently got a very surprising assist from their new coding tool. The developer was using an AI agent to figure out why their system kept running incredibly hot during normal daily tasks. Instead of just helping with the app’s code, the assistant flagged a […]
35+ AI visibility, AEO and GEO trackers in one place: pricing, ownership, funding, and what each one actually tracks. Some are rank trackers with a new coat of paint, some are SEO suites bolting AI onto old workflows, and a few want to do the work for you. Searchable, sortable, and updated as this market keeps shifting under our feet.
Et si l’IA ne se contentait plus d’aider les scientifiques, mais commençait à faire de la recherche à leur place ? Anthropic affirme que Claude a identifié un système enzymatique inédit dans l’ADN de bactériophages. Une découverte encore à confirmer, mais qui révèle surtout une ambition plus...
O Project Panama da Anthropic e o treino dos modelos de IA com base em conteúdo de livros, e a ambição de empresas como a OpenAI, estão no centro do artigo de opinião de Helena Borges da Costa.
Um grupo ligado ao ecossistema ShinyHunters usou infraestruturas na nuvem e ferramentas de scanning para caçar segredos codificados em aplicações (APK) para Android, obtendo acesso a sistemas empresariais em poucas horas.
L’intelligence artificielle ne se contente plus d’assister les hackers, elle leur permet désormais d’automatiser une grande partie de leurs attaques. Une évolution qui change profondément le rapport de force entre cybercriminels et défenseurs, et qui pourrait rendre les méthodes de protection...
The performance gap between frontier AI models from US tech companies and the best open-weights models from Chinese companies has closed to just 4.4 months, according to a Mozilla report. That explains why many companies are shifting to the significantly cheaper open models for routine work—and helps reveal a narrow band of workloads where frontier models are worth the cost.
Most organizations should ideally be using open models as the default for the majority of their work, according to the latest State of Open Source AI report from Mozilla, published on September 15 and shared with Ars prior to publication. The report highlights how a leading open model, Moonshot AI’s Kimi K3, achieves a composite AI performance score on the Artificial Analysis Intelligence Index that is just three points behind Anthropic’s Fable 5 closed frontier model, all while costing just 30 percent of the latter.
“[A Closed model] earns its premium in a few places: expert professional work, high-intensity retrieval, and long context,” Raffi Krikorian, chief technology officer at Mozilla, said in an email to Ars. “We see the decision to pay for closed [models] as workload-specific rather than organization-specific.”
Le jeu vidéo pourrait bien devenir un terrain d’essai privilégié pour les agents d’IA. Des chercheurs britanniques ont justement imaginé un test qui les confronte à une partie de Civilization VI, où ils doivent planifier leurs actions sur plusieurs centaines de tours. Les résultats mettent en...
Our conversation with Adam Engst continues with an exploration of how AI can help non-programmers build sophisticated software by following professional development practices. Adam explains using specifications, architecture documents, and AI-guided decisions to create reliable apps, then examines the approach his app, SetShot, takes to macOS settings, privacy, security, user feedback, Cloudflare, GitHub, and minimizing sensitive data collection.
Adam Engst looks back at HyperCard as an early tool that democratized software creation, then connects its legacy to today’s AI-assisted development. He outlines how Claude helped turn an idea for tracking macOS setting changes into a working Mac app, SetShot. Adam discusses Xcode, GitHub, rapid iteration, and the value of visual feedback in his development process, and how AI lowers programming barriers without eliminating the need for thought, judgment, and effort.
Meta AI listed them like a shopping list. Everdene. Virelune. Narrowbeck. Fitchwold. Brimsel. Yestrave. Mibbelth. Varkhoon. Cassivane. Turnbold. Wumbral. Mawthorn.…
Hot on the heels of OpenAI’s addition of a cloud-based browser to ChatGPT Work, Anthropic has added an in-app browser to Claude Cowork in its desktop app. What’s interesting about the two browser implementations is that while both ChatGPT Work and Claude Cowork are meant to be used for general knowledge work, Claude Cowork’s browser is something of a hybrid that mixes aspects of OpenAI’s Codex built-in browser with its ChatGPT Work cloud-based browser.
First of all, I do not yet have access to Claude’s in-app browser, so the following is based solely on Anthropic’s announcement and other documentation. Still, the differences are worth understanding since the tools are aimed at different workflows.
Like Codex’s in-app browser, Claude Cowork’s in-app browser is built into the desktop app itself. That ties Claude’s browser to the instance of its app running on your Mac. Turn your Mac off or close the Claude app, and the browser becomes unavailable. Leave the Claude app running, and you’ll be able to control the browser session remotely through the Claude mobile app or the web.
From there, however, the browsers diverge. As you’d expect, the Codex implementation is developer-oriented, with tools to build, inspect, and annotate web pages along with access to a terminal, repos, and diffs. In contrast, Claude Cowork’s in-app browser opens automatically as needed for general-purpose web tasks instead of development tasks.
Also, while both ChatGPT Work’s and Claude Cowork’s browser implementations benefit from being isolated from your other day-to-day browser use outside those apps, their handling of login credentials is a little different. As I wrote in greater detail yesterday, ChatGPT separates the login process from the model’s activity and evaluates the login page for things like phishing schemes. Claude Cowork’s in-app browser offers two ways to log in: manually, or by importing cookies from logged-in sessions in another browser. Currently, Claude supports cookie imports on the Mac from Chrome, Edge, and Firefox, but not Safari. In addition to the security benefits that come with a browser that runs isolated from your everyday browser, Claude also requests permission before acting on a site for the first time, blocks high-risk sites, checks actions against the your requests, and uses the same prompt injection protections as its Chrome extension.
My first-run experience with ChatGPT Work’s cloud browser was a mixed bag but showed promise. Although I haven’t tried Claude Cowork’s browser yet, I’m glad to see Anthropic moving in the same direction as OpenAI here. Isolating agent browsing by bringing the browser into Claude and ChatGPT doesn’t solve every security issue, but it’s a good starting point. I expect we’ll see both Anthropic and OpenAI iterate quickly on this theme in the coming months.
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Claude did not rediscover the proof. It made the existing one machine-checkable. 
