French AI startup Mistral has unveiled Mistral Large 4, a 1-trillion-parameter open-weight model nicknamed Le Chonk designed to compete directly with proprietary frontier systems. The model is trained from scratch with s...
Security researchers at Hacktron AI used Anthropic's Claude Opus 5 to chain two vulnerabilities — a memory bug in libheif reached through OpenAI's Discourse-powered community forum, then a follow-on flaw enabling account...
Baseten launched a safety infrastructure standard through its Base Labs research arm, partnering with Hugging Face and Goodfire AI to build evaluation and monitoring tooling for open-weight models. The effort responds to...
Mira Murati's AI lab Thinking Machines is reportedly in talks to raise $1 billion at a valuation of at least $40 billion, with existing investor Accel in discussions to lead. The figure is below the $50 billion the compa...
Abliteration.ai, incorporated in March, hosts and sells API access to open-weight models such as Z.ai's GLM-5.3 with their refusal behaviors removed via the "abliteration" technique, marketing the service for offensive c...
Reports indicate Nvidia is pursuing a $13 billion acquisition of Hugging Face, following its $6 billion deal with open-weight model builder Poolside and Stripe's $7 billion purchase of OpenRouter. The consolidation refle...
The mysterious open-weight model 'Ox Alpha', released anonymously on OpenRouter and quickly topping leaderboards, was confirmed to be the newest iteration of Z.ai's GLM series. Z.ai plans to publish the weights on Wednes...
Meta released Glimmer, an open-weight model users can download and run locally, while keeping its more capable Muse Spark model behind proprietary APIs. The release accompanied a 6,500-word letter from Mark Zuckerberg ar...
At the Ai4 conference in Las Vegas, Geoffrey Hinton, Fei-Fei Li, and Andrew Ng each argued against letting a handful of labs gatekeep AI, while disagreeing on how open model weights should be. Hinton distinguished open-s...
River AI, founded by xAI co-founder Igor Babuschkin, raised $1.1 billion in a seed/Series A led by General Catalyst and AMP PBC with participation from Nvidia, AMD Ventures, Y Combinator, and Temasek, just two months aft...
