Siqi Chen's post on X, curated on eChai

we found opus 5.5 to be 2X as efficient as gpt-6-sol in our internal https://cfo.ai evals so i was not expecting 6.1-sol to improve on that much

but to see it 3X the efficiency of opus 5.5 and 2.5X against even sonnet 5.5 is actually 🤯

this is an insane point release