Anthropic says Claude Mythos Preview has been used to find more than 10,000 high- or critical-severity vulnerabilities since the launch of Project Glasswing (Anthropic)
https://www.anthropic.com/research/glasswing-initial-update
OpenAI releases Privacy Filter, an open-weight model for masking personally identifiable information in text, with 1.5B total and 50M active parameters (OpenAI)
https://openai.com/index/introducing-openai-privacy-filter
Anthropic says it has fixed three causes of recent Claude Code quality issues: reduced default reasoning, a caching bug, and a system prompt to reduce verbosity (Anthropic)
https://www.anthropic.com/engineering/april-23-postmortem
OpenAI releases ChatGPT for Clinicians, a tool for medical tasks like documentation and research, free for verified physicians, pharmacists, and more in the US (OpenAI)
https://openai.com/index/making-chatgpt-better-for-clinicians
Google Cloud and Wiz debut new AI security agents at Next '26, including Threat Hunting and Detection Engineering agents, to combat automated zero-day exploits (Frederic Lardinois/The New Stack)
https://thenewstack.io/google-cloud-cat-mouse/
Alibaba launches Qwen3.6-27B, an open-weight dense model with 27B parameters, saying it surpasses Qwen3.5-397B-A17B on major coding benchmarks (Qwen)
https://qwen.ai/blog?id=qwen3.6-27b
X says it is deprecating X Communities, giving members until May 30 to migrate to XChat, and plans to increase group chat limits to 1,000 in the next two weeks (Nikita Bier/@nikitabier)
https://x.com/nikitabier/status/2047041338106159484
Substack adds translation tools, and says ~100K publishers earn on the platform, including ~30K outside the US; European creators earn $90M /year collectively (On Substack)
https://on.substack.com/p/the-global-ideas-exchange
Google says Meet's Gemini-powered Take Notes for Me feature can now be used for in-person meetings and adds support for Teams and Zoom (Abner Li/9to5Google)
https://9to5google.com/2026/04/22/google-workspace-next-2026/