Is it ok for a 13 mon old to still eat baby food?

Baby food. Absolutely. Baby food is carefully manufactured/processed so that it safe, meets health standards, and provides excellent balanced nutrition. Once you change to table food, you lose a lot of that control and that's when junk food starts creeping into the diet. There is no medical need to change to table food. It is usually done because the independent minded toddler wants what everyone else has.