We are working on implementing a mitigation, OpenAI said in a status update. If you've had trouble using ChatGPT today, you aren't alone. The AI chatbot is experiencing a partial outage for many users this afternoon. Down Detector reports of issues with the service leapt from almost nothing to more than 12,000 around 3PM ET. OpenAI issued a status update noting that elevated error rates are occurring for ChatGPT and Platform users.

The performance of machine learning surrogates is critically dependent on data quality and quantity. This presents a major challenge, as high-fidelity (HF) data is often scarce and computationally expensive to acquire, while low-fidelity (LF) data is abundant but less accurate. To address this data-scarcity problem, we develop a probabilistic multi-fidelity surrogate framework based on generative transfer learning. We employ a normalizing flow (NF) generative model as the backbone, which is trained in two phases: (i) the NF is first pretrained on a large LF dataset to learn a probabilistic forward model; (ii) the pretrained model is then fine-tuned on a small HF dataset, allowing it to correct for LF-HF discrepancies via knowledge transfer. To relax the dimension-preserving constraint of standard bijective NFs, we integrate surjective (dimension-reducing) layers with standard coupling blocks. This architecture enables learned dimension reduction while preserving the ability to train with exact likelihoods. The resulting surrogate provides fast probabilistic predictions with quantified uncertainty and significantly outperforms LF-only baselines while using fewer HF evaluations. We validate the approach on a reinforced concrete slab benchmark, combining many coarse-mesh (LF) simulations with a limited set of fine-mesh (HF) simulations. The proposed model achieves probabilistic predictions with HF accuracy, demonstrating a practical path toward data-efficient, generative AI-driven surrogates for complex engineering systems. Email address: David.Barajas-Solano@pnnl.gov (David Barajas-Solano) Introduction High-fidelity (HF) computer modeling using discretization schemes such as the finite elements (FE) method provides a rigorous framework for analyzing and predicting the behavior of complex engineering systems.

Like practically every other tech company under the sun, Mozilla has been jamming generative AI features into its products . The organization has now acknowledged that not everyone wants things like chatbots in the Firefox sidebar, so it's giving you the option to turn off all of that. On February 24 (or earlier in Firefox Nightly builds), Mozilla will roll out Firefox 148, which will include an AI controls section in the desktop browser settings. From here, you'll be able to block current and future generative AI features, or only enable select tools. At the jump, you'll have the option to disable (or enable) chatbots in the sidebar, automated translations and alt text generation for PDFs.

Codex can now manage several AI assistants to complete complex tasks. Since last spring, OpenAI has offered Codex . What started life as the company's response to Claude Code is becoming something more sophisticated with the release of a new dedicated macOS app. At its most basic form, Codex is a programming agent capable of writing code for users, but now it can also manage multiple AI assistants that can work together to complete more complex tasks. OpenAI gives an example of how this could work in practice.

When you purchase through links in our articles, we may earn a small commission. Sterling Stock Picker uses OpenAI-powered AI to analyze stocks, assess risk, and help you make calmer, more informed investment decisions--and lifetime access is just $55.19. While markets don't like uncertainty, lately, there's been plenty of it. That's why Sterling Stock Picker is such a supportive tool . Designed to help investors make clearer, more informed decisions, this tool uses Finley AI, powered by OpenAI (the company behind ChatGPT), to analyze stocks and portfolios with depth and context.

NVIDIA is still planning to make a'huge' investment in OpenAI, CEO says The comment comes after a report from The Wall Street Journal suggested an earlier deal between the two companies had stalled. NVIDIA CEO Jensen Huang told reporters that the company will invest a great deal of money in OpenAI's latest funding round, according to, after on Friday reported that the two companies were rethinking a previous $100 billion deal that hasn't progressed beyond the early stages of negotiations. Speaking to reporters in Taipei this weekend, Huang reportedly said it could be the largest investment we've ever made. NVIDIA and OpenAI jointly announced in September that NVIDIA would be investing up to $100 billion in OpenAI to build 10 gigawatts of AI data centers. The companies said then that they were targeting the second half of 2026 for the first phase of the project to go online.

This change affects users who haven't upgraded to GPT-5.2, though OpenAI claims most users have already transitioned to the newer model. The retirement streamlines ChatGPT's offerings, leaving users with fewer but more advanced AI models for their interactions. You'll soon have fewer AI models to choose from when conversing with ChatGPT. OpenAI recently announced that it'll soon be discontinuing several of the AI chatbot's older GPT models. In two weeks--on Friday, February 13th--OpenAI will remove the GPT-4o, GPT-4.1,

ICE Is Using Palantir's AI Tools to Sort Through Tips ICE has been using an AI-powered Palantir system to summarize tips sent to its tip line since last spring, according to a newly released Homeland Security document. United States Immigration and Customs Enforcement is leveraging Palantir's generative artificial intelligence tools to sort and summarize immigration enforcement tips from its public submission form, according to an inventory released Wednesday of all use cases the Department of Homeland Security had for AI in 2025. The AI Enhanced ICE Tip Processing service is intended to help ICE investigators "to more quickly identify and action tips" for urgent cases, as well as translate submissions not made in English, according to the inventory. It also provides a "BLUF," defined as a "high-level summary of the tip," produced using at least one large language model. BLUF, or "bottom line up front," is a military term that's also used internally by some Palantir employees.

Google's latest addition to its Chrome browser puts generative AI behind the wheel and you in the passenger seat. Google debuted a new "Auto Browse" feature for Chrome on Wednesday. The tool, powered by Google's current Gemini 3 generative AI model, is an AI agent designed to take over your Chrome browser to help complete online tasks like booking flights, finding apartments, and filing expenses. The release of Auto Browse is part of Google's continued integration of AI features into Chrome. Last year, Google dropped the "Gemini in Chrome" mode to answer questions about what's on web pages and synthesize details from multiple open tabs.

'This train isn't going to stop': shocking Sundance film shows promises and perils of AI Is AI an existential threat, or an epochal opportunity? Those are the questions top of mind for a new documentary at Sundance, which features leading AI experts, critics and entrepreneurs, including Sam Altman, the OpenAI CEO, with views on the near-to-midterm future ranging from doom to utopia. 'The world is hurting right now': politics and protest hit the Sundance film festival The AI Doc: Or How I Became an Apocaloptimist, directed by Daniel Roher and Charlie Tyrell and produced by Daniel Kwan (one half of The Daniels, the Oscar-winning duo behind Everything Everywhere All At Once), delves into the contentious topic of AI through Roher's own anxiety. The Canadian film-maker, who won an Oscar in 2023 for the documentary Navalny, first became interested in the topic while experimenting with tools released by OpenAI, the company behind the chatbot ChatGPT. The sophistication of the public tools - the ability to produce whole paragraphs in seconds, or produce illustrations - both thrilled and unnerved him.