No. Tetras are notorious fin nippers.
There will always be the odd one or two people who have been liucky but as a general rule, bettas should not be kept with tetras of any kind.
Platies I would also say no as they are much stronger swimmers than the betta, and will outcompete for food, and may bully and barge him around.
Bottomfeeders like cories are safe and do not nip, and for midwater swimmers, Endlers livebearers (NOT fancy guppies! ) and tiny fish like chilli rasboros and rice fish have been kept with bettas with reasonable success. Shrimp and snails are safe too.