Building a good model generally means it will do well on benchmarks too. The point of the speculation is that Anthropic is not focused on benchmaxxing which is why they have models people like to use for their day-to-day.

I use Gemini, Anthropic stole $50 from me (expired and kept my prepaid credits) and I have not forgiven them yet for it, but people rave about claude for coding so I may try the model again through Vertex Ai...

The person who made the speculation I believe was more talking about blog posts and media statements than model cards. Most ai announcements come with benchmark touting, Anthropic supposedly does less / little of this in their announcements. I haven't seen or gathered the data to know what is truth