Grok 4, Sonnet-4 and new run updates

[crizCraig]

I see a lot of exciting updates on X https://x.com/METR_Evals/status/1950740117020389870

and on the top chart here: https://metr.org/blog/2025-03-19-measuring-ai-ability-to-complete-long-tasks/

Would love to see all those juicy details in data/external/all_runs.jsonl!

Thanks for this incredibly important project.

[tginart]

Agreed!