https://x.com/i/status/2019025935882760666
Fact-checking :
- For BYD : « BYD has the most R&D personnel among automakers and nearly 110,000 engineers, CEO says »
- For Tesla : « As of December 31, 2025, our employee headcount worldwide was 134,785 »
From the article it wasn’t clear to me if all of those engineers were in R&D or if they had that many engineers in total
Fair, here’s a clearer source : https://bydukmedia.com/en/about.html