GTO Small-Bet Strategy: When Betting Smaller Makes Sense

Short Answer
A small bet is not a timid bet; it is a low-price attack against a wide range. It often works when you have range advantage, want weak hands to continue, or do not want to force villain into a stronger range.
Where It Fits
Dry high-card boards, clear preflop-aggressor advantage, and opponents with many weak pairs or ace-high hands are common small-bet spots. Small sizing also helps non-robust equity because it keeps the continuing range wider.
Where It Fails
On wet boards, when both players have strong draws or when you need to charge equity, small bets can give too good a price. Larger sizing or checking may be better.
Decision Steps
- Confirm range advantage.
- Check whether many worse hands continue versus small sizing.
- Avoid automatic small bets on dynamic boards.
- Protect small sizing with enough strong hands.