Opus 5.5 in Claude Code is crazy fast, especially at spotting UI bugs

Users report that Opus 5.5 in Claude Code demonstrates significantly improved speed compared to regular Opus, particularly in code writing and bug detection. Its performance in identifying UI bugs is highlighted as exceptionally fast, drastically reducing the time previously spent tracking down interface issues. This enhancement is described as a "night and day" difference, suggesting a substantial leap in efficiency and user experience.

Unlike earlier versions, Opus 5.5 in Claude Code is specifically noted for its exceptional speed in identifying UI bugs, a task where previous iterations were slower.