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A comment on Claude's New Constitution. Parent comment

Re:Claude's New Constitution by kouteiheika on Thursday January 22, 2026 @04:11AM (#46716858)
> and Claude Opus 4.5 is merely a ~160B active param model

Do you have a source for this?

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Re:Claude's New Constitution by jychang on Thursday January 22, 2026 @07:41AM (#46718480)
> for Claude Opus 4.5, we get about 80 GB of active parameters

https://news.ycombinator.com/item?id=46039486

This guess is from launch day, but over time has been shown to be roughly correct, and aligns with the performance of Opus 4.5 vs 4.1 and across providers.

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