What is a good button opening range in 6-max?
The GTO solver Button first-in range at 100bb raises 41.6% and folds 58.4% of hands.
When action folds to the button, only the blinds remain and the button has position postflop. The models generally enter more hands here than from early seats, but they differ in how often they raise or limp. The grid shows those actions separately rather than recommending every highlighted hand as an open-raise.
The GTO solver chart is our CFR solver's 100bb ranges, with 2.5bb opens (3bb from the small blind). The other charts are the ranges Poker Shark's Arena opponents play, not recommendations for your own play. The Arena's GTO opponent is GTO-style: hand-written rules, a little tighter than a solver. The other types are modeled on real players. Percentages are how often each one takes each action.
Green is raise, blue is limp or call, and gray is fold. Each share fills that percentage of the cell. Raise includes all-in actions. The Arena charts specify no raise size. Use the hand lookup for exact percentages. These fixed snapshots do not expose a rake setting.
6-max, 100bb starting stacks, 0.5/1bb blinds. BTN is first in; no prior raise or limp. UTG, HJ, CO folded. Limp means matching the big blind.
Quick tip: Compare a model’s raise and limp shares separately. A low raise frequency can coexist with frequent limping.
Button opening range by the numbers
Fixed reference figures, independent of the chart selected above. First-in comparisons count raises only; defense comparisons count raises plus calls.
For comparison, the GTO solver Cutoff open range raises 27.8% of hands at 100bb, 13.8 points tighter than this seat. Figures count combos: pairs weigh six, suited hands four, and offsuit hands twelve. Limping is excluded from these raise-frequency comparisons.
Now play the spots, not just the chart.
Practice against opponents whose ranges are too loose, too tight, or too passive, and exploit the gap.
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