baikal just annouced a 20kh/s 60w Baikal Giant N which does cryptonight... gg
It will be useless in 6 months as Monero will change PoW every 6 months.
As far as I know will be useless for Monero at the end of this month with V7. Baikal may be able to release a firmware for V7, but I'm sure Monero will make sure it's not possible for the next one

It'll be useless with V7 in ~15 days, and if baikal could circumvent that with a firmware update (hint: they can't) you can be sure Monero devs wouldn't wait 6 months before updating the algo again.