Anthropic's Opus 4.8 and ultracode mode improve bug filtering, reducing cost per medium-severity issue.
What changed
ARTICLE UPDATE ALERT: THE DAY AFTER WE PUBLISHED FINDING MISCOMPILES FOR FUN, NOT PROFIT, ANTHROPIC RELEASED OPUS 4.8 AND ULTRACODE MODE IN CLAUDE CODE. OUR PRELIMINARY EXPERIMENTS INDICATE THAT TOGETHER THESE ARE SIGNIFICANTLY BETTER AT FILTERING OUT LOW-SEVERITY BUGS, AND THAT THE COST PER MEDIUM-TO-HIGH SEVERITY BUG FOUND IS MAYBE 1/5 (WITH VERY LARGE ERROR BARS) THAT OF THE WORKFLOW DESCRIBED IN THIS ARTICLE. (1/2)🧵 — VIA @SEMIANALYSIS_