Epic Games founder and CEO Tim Sweeney stated that Grok 4.5 performs well on vibe math within programming language theory. He noted it matches Sol 5.6 in capability while proving more enjoyable than Fable/Opus 5, which tend to generate unnecessary documents or repeatedly prompt users to continue. The comments appear in a public post referencing the model's practical strengths for technical workflows. No additional verification or updates on these observations have been supplied in the available sources.