Parallel
Matthew 20:10
Nestle 1904 Greek New Testament · Berean Standard Bible
καὶ ἐλθόντες οἱ πρῶτοι ἐνόμισαν ὅτι πλεῖον λήμψονται καὶ ἔλαβον τὸ ἀνὰ δηνάριον καὶ αὐτοί
So when the original workers came, they assumed they would receive more. But each of them also received a denarius.