I don't see Claude 3.7 on the official leaderboard. The top performer on the leaderboard right now is o1 with a scaffold (W&B Programmer O1 crosscheck5) at 64.6%: https://www.swebench.com/#verified.

If Claude 3.7 achieves 70.3%, it's quite impressive, it's not far from 71.7% claimed by o3, at (presumably) much, much lower costs.