> 100 instances of the same LLM may converge on the same result as 10.
Not in the highly verifiable domains. There you can take it from say 80-90% maj@x to 99% pass@n. Math, some parts of programming and cybersec are examples of highly verifiable domains. (e.g. if you're searching for a linux LPE, that's expensive to search but easy/cheap to verify - just have a token in /root and have the model retrieve that token)