What's PlayMagnus age 10 Magnus' true elo? I do realise that a similar question might have been asked before; however, all intel about the topic that I have managed to gather to date seems to be outdated: almost everywhere I search, it is said that PlayMagnus age 10's estimated elo is 1500-1700, but I believe him to be much stronger than that. My Rapid elo on chess.com is 1850, but in order to beat him, I need to concentrate intensely, and even then I'm more likely to draw or lose than win. There is no doubt in my mind that the bot is stronger than me - I would estimate by about 200-300 elo points.
To this end, here is the question: am I simply significantly overrated, or is age 10 Magnus' true elo actually higher than what is commonly cited?
It's important to note the PlayMagnus app is running the Glaurung chess engine. The Glaurung chess engine is the forerunner of Stockfish. It's roughly about the same level as Shredder/Junior (link), both former winners in the computer chess championships. Very far away from the modern Stockfish but also far stronger than your chess.com's rating. You won't stand a chance unless the engine artificially plays bad chess. Unfortunately, there is no good way to make an engine play weaker while human-style chess. Lot's of different techniques, but nothing is satisfactory.
However, the PlayMagnus group has professional chess programmers working full-time to tune the engine for each age group. While I don't know their internal benchmark, the fact that they're pushing the app out means they're satisfied with the performance. Magnus Carlsen at age 10 was about ELO 2000 (from Wikipedia), so that'd be the target ELO. A tuned-down engine will not be playing consistently at human-level ELO 2000, but it should be closed given after so many years of professional development.
A very roughly ELO 2000+ (computer engines tend to biased up) is what you should expect. That's consistent with your observations.