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Open source shapes AI in ways beyond just model weights — shared security tools, developer frameworks, and community-built infrastructure that anyone can inspect, use, and improve. This hub tracks open-source projects, coalitions, and initiatives across the AI ecosystem. For open-weight models specifically, see the Open-Source AI hub.
Anthropic is folding its most capable model, Claude Mythos 5, into its Claude Security scanner for Enterprise customers and launching a $35 million fund for open-source security work.
Read more →The U.S. Department of Energy opened a program to build open-weight AI models for scientific research, starting with Genesis-Science-1, developed with startup Arcee AI.
Read more →Nvidia and more than 50 companies, including Microsoft, Cisco and Hugging Face, launched the Open Secure AI Alliance on July 27 to build open tools for defending AI systems.
Read more →Block, the fintech company led by Jack Dorsey, has released Buzz, a free, open-source chat platform where employees and AI agents collaborate in the same conversations.
Read more →MCP is an open standard that lets AI models like Claude and ChatGPT connect to outside tools, files, and apps — instead of needing custom code for every single connection.
Read more →OpenAI on June 22 expanded its Daybreak security program with GPT-5.5-Cyber, a model designed to detect and patch code vulnerabilities, and launched Patch the Planet to harden over 30 major open-source projects.
Read more →OpenAI and Trail of Bits launched Patch the Planet, using the GPT-5.5-Cyber model to find and fix vulnerabilities in widely used open-source software, with 30+ projects on board.
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