I used Claude Code, Codex, and Google Antigravity to build my dream note-taking app, and one is in a different league

A Florida woman, Carli Michelle Heller, was arrested and charged with making a written threat of violence after using the AI chatbot Claude as a diary. According to reports, Heller wrote that she planned to shoot up the Sheriff's office, which was flagged by Claude's safety systems and escalated to a human reviewer. The reviewer reported the threat to law enforcement, and Heller was detained without incident.

In other news, a developer has shared their experience building a note-taking app using AI coding tools, including Claude Code, Codex, and Google Antigravity. The developer noted that one of the tools stood out as being in a different league, but did not specify which one.

Developers using Claude Code have been sharing their experiences with the tool, including how to effectively prompt and steer long-running tasks. According to one guide, Opus 5.5, a model used in Claude apps and Claude Code, works well with existing workflows but behaves differently in some ways, such as working longer on its own and thinking before every reply.

Brief written by urgent.news from XDA Developers, TechSpot, Dev.to, Hacker News Best, Hacker News — 5 reports on this story. Machine-written — may contain errors; check the original before relying on it.