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.

AINous Research raised $90 million in a Series B round led by Robot Ventures, with Nvidia, Samsung and Y Combinator participating, at a $1.5 billion valuation. The company says its open-source Hermes agent, released in February, has been downloaded more than 24 million times. Nous generated $36 million in annualized revenue as of mid-September and expects it to top $100 million by year's end, according to the Wall Street Journal.

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.

AISpaceXAI joins the Omacom Foundation, which oversees the Omarchy Linux distro, as a Founding Corporate Patron and donates $1.5 million in Grok tokens. According to David Heinemeier Hansson's blog post, the tokens will primarily accelerate development, review code, and patch bugs. The article notes Hansson's recent anti-immigration blog posts, and that 1Password and Cloudflare have also faced criticism for contributing to Omarchy.

AICursor says it is excited to support open-source software alongside SpaceXAI, and it plans to bring more projects on board soon. Background from DHH indicates SpaceXAI joined the Omacom Foundation as a Founding Corporate Patron, contributing $1,500,000 in @grok tokens for maintaining and developing Omarchy.

AITeknium, a Nous Research affiliate, posted only the word "hello" on X. The quoted post from Nous Research announces a Series B raise to advance Hermes Agent and build a mobile app, with investors including NVIDIA and Samsung Next.

AIClément Delangue says Hugging Face's acquisition by Nvidia lets the company hire people it could not afford as a small startup. He frames the move as giving them a decade to help open-source AI win, and invites interested candidates to message him directly.

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.

AITogether AI has signed one of the largest AI infrastructure deals for open source, a 250MW data center built with HUMAIN in Saudi Arabia. Tri Dao says many more GPUs are coming for open models.

AIStability AI announced a $76M Series B round, bringing total funding to $232M under CEO Prem Akkaraju, with new investors including Electronic Arts, Sony Music Group, Universal Music Group, and Warner Music Group. The company said the capital will fund its creative production product suite, applied research, and professional services. The announcement followed the launch of Stable Audio 3.0, a family of open-weight music models trained on fully licensed data.

AIJensen Huang says defenders need a frontier AI ecosystem combining the best open and closed models, citing how an open-weight frontier model helped contain the Hugging Face intrusion when closed AI blocked essential forensics. Nvidia has created the Open Secure AI Alliance to develop new techniques and tools for safeguarding software and agents by sharing models, tooling, and research in the open.

AITogether AI says it is serving 400 trillion tokens per month, and demand for open models keeps rising. The company also announced an $800 million Series C at an $8.3 billion valuation, as it works to build an efficient generative AI platform.

AIXiaomi MiMo's account celebrated growing developer adoption of its open-weights models, crediting Cline for building on MiMo. Cline's linked post announced a $9.99/month subscription offering 2-5x discounted access to GLM-5.2 and other open-weight models including DeepSeek, Kimi, MiniMax, MiMo, and Qwen, with a $1.99 promo for sign-ups via npm i -g cline.

AIAman Sanger says Cursor's team evaluated many base models on perplexity-based evals and found Kimi k2.5 the strongest. Composer 2 was then built with continued pretraining and a 4x scale-up of high-compute RL, with Fireworks providing inference and RL samplers. The author admits Cursor should have named the Kimi base in its launch blog and says it will do so for the next model.

AIAman Sanger of Cursor says Composer 2 is a really good model and he is excited for more people to try it. The quoted reply from Lee Robinson says Composer 2 started from an open-source base, with only about one-quarter of the final model's compute coming from that base. Cursor plans full pretraining in the future and says it is following the license through its inference partner terms.