Earlier quoted context omitted.
Claude got 63.2% according to the swebench.com leaderboard (listed as "Tools + Claude 3.7 Sonnet (2025-02-24)).[0] OpenAI said they got 69.1% in their blog post. [0] swebench.com/#verified
Yes, however Claude advertised 70.3%[1] on SWE bench verified when using the following scaffolding: > For Claude 3.7 Sonnet and Claude 3.5 Sonnet (new), we use a much simpler approach with minimal scaffolding, where the model decides which commands to run and files to edit in a single session. Our main “no extended thinking” pass@1 result simply equips the model with the two tools described here—a bash tool, and a fi…
> For our “high compute” number we adopt additional complexity and parallel test-time compute as follows:
> We sample multiple parallel attempts with the scaffold above
> We discard patches that break the visible regression tests in the repository, similar to the rejection sampling approach adopted by Agentless; note no hidden test information is used.
> We then rank the remaining attempts with a scoring model similar to our results on GPQA and AIME described in our research post and choose the best one for the submission.
> This results in a score of 70.3% on the subset of n=489 verified tasks which work on our infrastructure. Without this scaffold, Claude 3.7 Sonnet achieves 63.7% on SWE-bench Verified using this same subset.