Open source

AIThreatBook says it has acquired CyberStrikeAI, an open-source AI pentesting agent. It says the tool will stay open source with added guardrails, while new capability enhancements go into its commercial edition. The post also says an earlier threat intelligence report wrongly linked the developer, a security engineer at Alipay, to national agencies.

AIa16z announces its investment in Preference Model, a team building reinforcement learning environments for leading AI labs, focused on AI research and ML engineering tasks. The team is open-sourcing Karotte, a framework used in production to build those environments, with defenses such as killing stray processes before grading and rejecting files designed to crash the grader. The post says Karotte has been hardened through more than a million evaluation runs and controlled red-teaming.

AINous Research, developer of the open source Hermes Agent, raised a $90 million Series B at a $1.5 billion valuation led by Robot Ventures. The capital will fund its enterprise push with Hermes for Businesses, which lets companies deploy customized AI agents for multi-step workflows while keeping data private. The article reports about $36 million in annualized revenue by mid-September 2026, citing The Wall Street Journal.

Why it matters: The source ties the funding round to a planned shift from open source developers toward paid enterprise agent deployments, which shows how the business model may change.

AIFei-Fei Li will join AMD as Executive Vice President and Chief Scientist, working directly with CEO Lisa Su. World Labs will join AMD to form a frontier research organization, co-led by Justin Johnson and Ben Mildenhall, focused on an end-to-end open AI ecosystem spanning hardware, software, platforms, and widely accessible open models.

Why it matters: The announcement shows how a leading AI lab's team is folding into a chipmaker, with a stated plan for an open AI ecosystem spanning hardware and models.

AIMistral announced a €3 billion Series D round at a post-money valuation of more than €21 billion, led by Samsung Electronics with co-leads Scaleup Europe Fund and PSG Equity. The company says the funding will expand frontier research, compute capacity, infrastructure, and international growth, and that it now operates in 20 countries with 125+ enterprise customers including Airbus, ASML, and HSBC.

Why it matters: The round shows how a company frames sovereign, open-weight AI as a full stack spanning models, infrastructure, compute, and products, which is useful context for European enterprise AI strategy.

AIGeorgi Gerganov reports that Hugging Face has been acquired by NVIDIA and says the llama.cpp/ggml project will keep its founding principles. He states that NVIDIA engineers have contributed to the codebase for more than a year, and that all backends will continue to be developed through community participation and remain hardware-agnostic.

Why it matters: The post shows how an acquisition may affect an independent open-source project's governance, hardware neutrality, and relationship with its corporate supporter.

AINVIDIA announced it will acquire Hugging Face, and Sundar Pichai congratulated Jensen Huang and Clement Delangue on the deal. Pichai said Google was an earlier investor in Hugging Face and remains a partner, expecting the deal to strengthen the open model ecosystem.

Why it matters: Pichai's post confirms Google's prior investment and partnership with Hugging Face, adding context to the acquisition's effect on the open model ecosystem.

AIHugging Face CEO Clement Delangue said the company intends to join forces with NVIDIA in a $12,930,300,000 acquisition. NVIDIA has committed to supporting Hugging Face's mission while keeping the platform open, independent and compute agnostic, and the founders and team are staying on.

Why it matters: The quoted announcement gives the deal size and stated commitments to keep Hugging Face open and compute agnostic, which matter for anyone tracking open-source AI infrastructure.

AIAli Ghodsi congratulated Clement Delangue and Jensen Huang and said the deal will be good for the industry and open source. The author's own post is short, and the quoted NVIDIA message says NVIDIA is acquiring Hugging Face and will be its new home.

AINVIDIA CEO Jensen Huang announced on X that NVIDIA is acquiring Hugging Face. He says NVIDIA will be a home for Hugging Face, its community, and the future of open models.