Why do chess.com computers keep calling stalemate early? What rule am I missing?

I just had a vs. computer game where I was up 27 points and was one move away from checkmate and all of the sudden the game ended in stalemate which I found weird because I didnt feel like he had an isolated king for very long. I went back and checked the moves and he had only moved his king 16 times in the entire game and I was under the impression that it was a 50 moves where moving the king is the only legal option. This is in contrast to an earlier player v player game where the dude decided to have fun with me and got himself 6 queens while I just moved my king around as my only piece left 23 times and no stalemate happened. What am I missing here? 

Stalemate ends the game immediately.

50-move rule is a different thing altogether. In the event that both parties move consecutively 50 moves each without capture or the push of any pawn, a draw can be claimed (automatic on this site).

There cannot be a "stalemate" when your position still contains legal moves.

Also, in one of your latest games where your opponent had five queens and a rook, your opponent gave a checkmate to your king.

Important formula to know:

No legal move for you + A check to your king at the same time = Checkmate, a win for your opponent

No legal move for you + No check to your king at the same time = Stalemate, a draw

Stalemate - Wikipedia

     You can't win a chess game by having more "points" than your opponent. You must checkmate them.

     Any time a player cannot make any legal move the game ends. It doesn't matter how much material each side has, how many moves since the last time a pawn moved or a piece was captured, how many times any position has been repeated, or any other consideration. If no more moves can be made the game cannot continue.

     If the player who cannot move is in check, that is checkmate and the opponent wins. If the player who cannot move is NOT in check that is stalemate and the opponent, no matter how superior their may be, has not proved they have played well enough to deserve a win. Draw by stalemate.

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Similar question, can someone help me understand why this ended with stalemate?

the black queen controls the squares around the king (h2, g2, g1). Because of this white is unable to make a move and because white is not it check, it is stalemate.

I’m mind blown, that’s wild. Appreciate the quick reply!

I’ll remember this when I’m playing live in front of another player. “Nope, you don’t win… it’s a stalemate”🤣