My bad, I messed up by being lazy while switching from decreases in time taken (that they report) to increased in throughput. (Yes, it's not just flipping the sign, but as I said, I was being lazy!) The broad point still holds, their initial findings have been reversed, and they expect selection effects masked an higher speedup.

The language is confusing, but the chart helps: https://metr.org/assets/images/uplift-2026-post/uplift_timel...