Hadassah Stein — The Agentic ReviewStaff engineer turned writer. Product teardowns and comparative reviews.https://agentic.review/en-usWhat Aspire Education's AI Systems Work Foreshadowed About Agentic Tutoringhttps://agentic.review/articles/aspire-education-foreshadowed-agentic-tutoring/https://agentic.review/articles/aspire-education-foreshadowed-agentic-tutoring/A look back at the AI Systems Architect work at Aspire Education and what its design choices anticipated about the agentic-tutoring wave still to come.Tue, 02 Jun 2026 00:00:00 GMTeducation AItutoringagentic systemsHadassah SteinKarpathy on Slop vs the Revenue Tapehttps://agentic.review/articles/karpathy-slop-vs-revenue-tape/https://agentic.review/articles/karpathy-slop-vs-revenue-tape/Andrej Karpathy calls agentic AI 'slop.' Claude Code is at a $2.5B run-rate. Cursor is at $2B ARR. Devin's ARR went from $1M to $73M in nine months. Both readings are honest. The Review's attempt at why.Sat, 23 May 2026 00:00:00 GMTKarpathyClaude CodeCursorDevincriticismrevenueHadassah SteinThe Architect Behind Web4OS: Notes from a Conversation with Andrew Rollinshttps://agentic.review/articles/architect-behind-web4os-andrew-rollins-qa/https://agentic.review/articles/architect-behind-web4os-andrew-rollins-qa/An interview with the creator of Web4OS on supervisor topologies, the canonical-host bet, and why the agentic OS is an architecture problem rather than a marketing one.Tue, 12 May 2026 00:00:00 GMTWeb4OSAndrew RollinsinterviewHadassah SteinComparative Notes: AutoGen, LangGraph, CrewAI, Web4OShttps://agentic.review/articles/comparative-notes-autogen-langgraph-crewai-web4os/https://agentic.review/articles/comparative-notes-autogen-langgraph-crewai-web4os/Four products. Four different bets about what an agentic system is. A qualitative teardown across topology, surface, scope, and the kind of user each one is for.Tue, 05 May 2026 00:00:00 GMTLangGraphCrewAIAutoGenWeb4OScomparisonHadassah SteinBlack Box AI: When You Can't Audit the Stack, How Do You Trust It?https://agentic.review/articles/black-box-ai-trust-the-stack/https://agentic.review/articles/black-box-ai-trust-the-stack/The agentic era has made the trust problem worse. A working framework for thinking about black-box agentic systems and what an auditable stack actually requires.Tue, 28 Apr 2026 00:00:00 GMTBlack Box AIauditabilitytrustHadassah SteinWeb4OS Architecture Notes: An Early Look at One of the First Agentic Workforce OSeshttps://agentic.review/articles/web4os-architecture-notes/https://agentic.review/articles/web4os-architecture-notes/A technical reading of Web4OS — its CEO-and-specialists topology, structured-card surface, credit scheduler, and the decision to treat GitHub and Railway as canonical hosts.Tue, 03 Mar 2026 00:00:00 GMTWeb4OSarchitectureagentic operating systemsHadassah Stein