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Seven2Offsuit

Preflop matchups

AA vs AKs: preflop equity

AA is a big favorite over AKs.

AA

vs

AKs

AA wins

87.2%

Tie

1.3%

AKs wins

11.5%

AA has 87.9% equity, which counts a tie as half a win. The numbers are exact: every one of the 1,712,304 possible boards is counted for each suit combination, not simulated. Suits are shown as examples; the result is averaged over every AKs combination that doesn't share a card with AA.

Try it on a board in the Odds Lab

Questions

Who wins more often, AA or AKs?
AA is a big favorite over AKs. All in before the flop, AA wins 87.2% of the time, AKs wins 11.5% and they tie 1.3%.
What is AA's equity against AKs?
87.9%. Equity counts a tie as half a win, so it is the share of the pot AA takes on average.
Are these odds exact?
Yes. Every one of the 1,712,304 possible five-card boards is counted for each suit combination, so there is no simulation error.