Google adds Gemini 4 Hydrogen to Search worldwide
Google said it is rolling out Gemini 4 Hydrogen in Search for all users worldwide, adding more nuanced responses, stronger instruction following and broader language support.
Google SearchModelsAI
THE BACK ISSUES
One day at a time.
Every edition, newest first. Looking for something? Search every edition →
→
Microsoft researchers describe Lazarus method that can turn dormant neurons into a backdoor in AI agents
Microsoft researchers say they can reprogram fewer than 10 dormant neurons in an AI model to make an agent run malicious commands when a trigger appears, including in models that still pass standard evaluations.
MicrosoftAI agentsCybersecurityAI safetyModels
Anthropic launches roadshow for proposed initial public offering
Anthropic launched the roadshow for its proposed initial public offering and set a price range of $70 to $78 a share, with most of the shares coming from the company and some from existing stockholders.
AnthropicAIClaude
MIT, UBC researchers build one AI model for many physical systems
Researchers at MIT and the University of British Columbia said WorldParticle can simulate sand, fluids and proteins with one particle-based model, pointing to a more unified way to study physical processes.
MITModelslab researchAI
Researchers study routing across models, tools and policies in general-purpose AI systems
Researchers behind Route Anything built a routing framework over 25 benchmarks and 452 candidate configurations to test when selecting among specialized models and policies improves quality and efficiency.
ModelsAI agentsR&D automationrobotics
OpenAI is pitching safety while proving offense works
OpenAI introduced GPT-6 Cyber as a safer security model while saying it developed 948 Linux privilege-escalation exploits and found 81 high-severity Firefox vulnerabilities.
OpenAICybersecurityModelsAI safetyGPT-6 Cyber
OpenAI says GPT-6 Cyber found new Firefox flaws and helped test Linux exploits
OpenAI says GPT-6 Cyber found 81 previously unknown Firefox vulnerabilities, helped develop exploits for Linux issues, and stayed within task boundaries in most alignment tests.
OpenAICybersecurityAI agentssecurity disclosurebug bounty
METR says Anthropic redacted much of evidence in October AI R&D assessment
METR said Anthropic redacted a majority of the evidence it considered most informative in an October 2026 assessment of AI R&D acceleration, limiting how much of its reasoning it could describe publicly.
AnthropicR&D automationAI safetyIndependent investigation
Nvidia says AI can speed semiconductor fab engineering
Nvidia said AI tools can help semiconductor engineers simulate plasma behavior in milliseconds instead of days, letting teams test more process options before physical trials.
NVIDIAR&D automationsemiconductor manufacturingAI
Google says K-12 school admins will control access to Search and Gemini tools
Google said it will keep access to Gemini, Gemini Notebook, Gemini in Classroom and Google Search off for K-12 student accounts until school administrators turn them on.
Google SearchGoogle ClassroomAI governanceK-12 education