Do AI in chess.com (ex. Nelson) learn from games with users?

I've played against Nelson Ai around a hundred games between this year and last year, and it feels like it's getting trickier and better at exploiting my mistakes the more I play against it.

Do these AI learn/adapt to the user playing against it, or is this just my condition steadily getting worse?

If it is actual AI, it learns. Most of these bots are simply programmed to play a certain way.

I assume it's extremely un-sophisticated... such as it has two settings easy and hard, which may be 50 Elo apart (heh). If you win it switches to hard and if you lose it switches to easy... and I wouldn't be surprised if it's even more disappointing than that.

AFAIK all bots are just Komodo with different settings... so it may be the same Elo, but plays a little more aggressively after you beat it, and more passively after you lose to it... there's zero percent chance it remembers 1 year's worth of games against you.

But yeah, maybe it plays the same no matter what, and it's just silliness.... maybe chess.com intended for it to be adaptive at first, but then they couldn't figure out how to program it... the same way their spell check is broken and their bad-word filter is broken.

Or it chooses a random setting every time... I think that's the most believable to me... the only reason that idea may not be true is that's a little too clever for them to think of (lol).

The non ai bots, like most of them are, are just dumbed down versions of stockfish with weird restrictions that make them inhuman 

All the bots ate based on Komodo, not Stockfish.

@Shipwrecked_Mind,  the bots don't remember previous games and only the ones under the adaptive section adapt their strength as you play a game.