Yeah; Satan and demons believe who Christ is, i.e., God incarnate, and that He rose from the grave. But do they “confess with their mouth”? It appears that Pilate did, via the written word. With his spoken word he confirmed it. “Pilate answered, What I have written I have written.”
Romans 10:9-10 King James Version
“9 That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shalt be saved.
“10 For with the heart man believeth unto righteousness; and with the mouth confession is made unto salvation.”
That still puts being saved far into the future, per what Jesus said in Matthew 24:13.