Loop engineering's two core pieces — run-until-done and maker/checker — are simple to wire up but easy to get quietly wrong, Anthropic's Boris Cherny said. Building a real-feedback loop from scratch i…
Anthropic documented that when a request to its 'claude-fable-5' model is classified as sensitive, the API silently substitutes 'claude-opus-4-8' instead, notifying the user in the response object. Cu…
Users are experiencing delays and stability issues with Claude's command classifier since this morning. The classifier is briefly unavailable, and the claude-opus-4-8 model is temporarily unavailable …
A developer built a multi-agent AI system where one agent writes code, a second scores it, and a third refines it in an automated loop. The pipeline uses Claude models to generate, evaluate, and impro…
A developer guide outlines 11 stages to build a self-running Claude assistant, progressing from a basic chat prompt to a cron-scheduled system that classifies emails, calls tools, and runs autonomousl…
Anthropic retired two Claude 4 models today, June 15, 2026, cutting off API access to claude-sonnet-4-20250514 and claude-opus-4-20250514. The company recommends migrating to claude-sonnet-4-6 and cla…