What is GTO poker?
GTO stands for Game Theory Optimal. It's a strategy that can't be beaten in the long run, no matter what your opponent does. Think of it as the poker equivalent of a chess engine's baseline — a solved answer for every spot, based on math instead of hunches.
Why it matters
Most players lose because they leak — over-bluffing rivers, folding too much to 3-bets, c-betting the wrong boards. GTO gives you a floor: a baseline that stops the bleeding. Once you can play unexploitably, you can start exploiting weaker opponents on purpose, from a position of strength.
A quick example
You're on the button with A♠ 5♠. Blinds fold to you. Big blind is a solid regular.
That's one hand. Poker has thousands of spots like it. GT_O drills them 20 at a time until the right answer becomes instinct.