In November, just a few days before Thanksgiving, Anthropic released Claude Opus 4.5 and naturally my coworkers were curious if it was a significant improvement over Sonnet 4.5. It was very suspicious that Anthropic released Opus 4.5 right before a major holiday since companies typically do that in order to bury underwhelming announcements as your prospective users will be too busy gathering with family and friends to notice. Fortunately, I had no friends and no family in San Francisco so I had plenty of bandwidth to test the new Opus.
The rapier crate also published a blog post highlighting a major change to its underlying math engine, in its 0.32.0 version so I asked Opus 4.5 to upgrade to that version…and it caused crashes, yet tracing the errors showed it originated with rapier itself. Upgrading to 0.31.0 was fine with no issues: a consequence of only using agentic coding for this workflow is that I cannot construct a minimal reproducible test case to file as a regression bug report or be able to isolate it as a side effect of a new API not well-known by Opus 4.5.
。关于这个话题，同城约会提供了深入分析
要说清楚这次的变化，得先回想一下三年前 AI 生图有多难用。
На фоне обострения ситуации на Ближнем Востоке цены на нефть взлетели до максимума за последние полгода. Стоимость апрельского фьючерса на эталонный сорт нефти Brent выросла на 3,5 процента, до 73,54 доллара за баррель.