He was replying to a tweet by Peter Schiff — a cryptocurrency skeptic and noted gold bug — who said the precious metal is better than Bitcoin and fiat money.
Musk earlier called Bitcoin a “less dumb” version of cash.
“Money is just data that allows us to avoid the inconvenience of barter,” Musk tweeted. In a post following that, he added, “that said, BTC & ETH do seem high lol.”
Bitcoin rose to a record $56,581.57 on Saturday in Singapore. It was at $55,666 as of 8:20 a.m. in London. Just this week, prices have jumped almost 18%.
Ethereum reached a high of $2,041, according to Bitstamp, hitting a record for the third straight day. It has risen more than 170% this year.
Read here about Ethereum price.
And here about markets data.