As a follow up just to refresh your memory:
“Attention Is All You Need” (Vaswani et al., 2017)
Length: 11 pages of main content, 5 pages of references and appendix
2. The first GPT paper (Radford et al., 2018)
Length: 12 pages
3. BERT (Devlin et al., 2018)
Length: 14 pages
Big ideas don't require big papers. I don't know where you got that idea from.