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 a higher speedup.

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