Definition
Plain language
The standard forced bet in poker, used as the yardstick for measuring how much a player wins or loses per hand.
As stated in the literature
The larger of the two forced blind bets in Texas Hold'em; poker AI performance is reported in milli-big-blinds per hand, where more-negative values indicate faster chip loss against a reference opponent.
Why it matters: It gives a common yardstick for poker skill, so wins and losses can be compared fairly across different games and stake levels.
For example, saying a poker bot loses 'fifty milli-big-blinds per hand' means it bleeds chips at a steady, comparable rate no matter the table stakes.
Heard on the show
“Poker results get measured in thousandths of a big blind per hand.”Episode 100 — How a Prompt Wrapper Lets a Frontier Model Play Poker Like an Expert