Look into senseichess.com or CARA ( https://pguntermann.github.io/CARA/ ) Note, both aren't free. Ok, CARA is open source and free, but to use the AI feature you'll need a Claude API key.
I'm currently evaluating both and both show promise.
Note, ChatGPT and the other AIs, using a LLM, Large Language Model, which isn't very good at chess like things. Large Vision Models are being developed and it should be good, but odds are pretty good that they will be more expensive to run.
I am trying to improve my game with a goal of being able to consistently beat the Millennium King Performance set to a level of 1600. I am currently winning about 20% of the time but in general the MKP @ 1600 slowly grinds me down with superior positional and tactic play. I have played on Chess.com for about 10 years with a blitz rating averaging around 1500 and puzzle rating of around 2000.
I have used the Chess.com analysis tool after games and have found it to be marginally useful. I would really like in game coaching with insights as to how I can improve my decision making. I tried using ChatGPT for one game against the MKP @ 1600 where I would explain to it what I thought were the biggest threats (Checks, Captures, Threats) from the opponent and then come up with at least 2 candidate moves with explanations. ChatGPT would then give in depth recommendations and insights that I found to be helpful. It ended being a somewhat tedious process thought because ChatGPT would lose track of the piece positions after a few moves so I ended have to paste fen files after each move. Also, the one game played with ChatGPT as a coach ended in a draw against the MKP @ 1600 which didn't seem a great outcome.
I have seen other tools such as Decodechess and the Chessup 2 board and I'm sure there are many others. Another issue I seem to have is that after playing so long on a computer, I don't feel I see the 3D board as well and miss easy tactics that I typically wouldn't on a 2D screen. Maybe playing more on a 3D board will help with that.
In summary, wondering how best to proceed and are there any tools I can use that would be similar to the way I used ChatGPT without the drawbacks? Thank you.