What's new in Claude Opus 5

Web Development & Frontend, Software Releases & Release Notes, AI & Machine Learning(platform.claude.com)view on HackerNews

Claude Opus 5Claude APIweb developmentfrontendAImachine learningdeep reasoningagentic taskstest-time compute scalingsoftware releasesrelease notes.

Author: acmnrs

Date: 7/24/2026

Article Summary:

This article discusses the new features and improvements in Claude Opus 5, a step-change improvement over Claude Opus 4.8, with the largest gains in deep reasoning, agentic and long-horizon tasks, and test-time compute scaling.