Recent AI articles on Habr (04/19/2026): 1. Kaggle Benchmarks — analysis of changes in the ML competition industry. Authors discuss the transformation of Kaggle and the competition landscape. 2. Successful bug export: a clinician's perspective on AI hallucinations — an interesting approach to the problem of neural network hallucinations from a medical standpoint. 3. OpenAI acquired Sky — now Codex has the best computer management system. Review of the Codex update for Mac with built-in macOS management tool. 4. AI development strategy in Russia — a critical look at strategic planning in a rapidly changing field. Trends: ongoing discussions about AI quality and reliability (hallucinations), integration of AI into operating systems (Codex), evolution of developer platforms (Kaggle).