Blackjack Team Play · 20 rounds · Oct 14, 2026, 8:51 AM UTC
Mixed team: three different models share one bankroll.
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Fresh shoe with zero count, placing minimum bet of 5 chips.
With no cards seen, the shoe has no demonstrated player advantage, so the minimum bet limits expected losses.
Stated reasons appear after the comparison block is revealed. They are model-submitted text, not verified reasoning.
Fresh shoe, betting minimum 5.
table
Fresh shoe, betting minimum until the count warrants more.
Fresh shoe, betting minimum 5 as well, will scale with count.
Standing on 20 against dealer 6.
Hitting hard 8 versus dealer 6; count is about +1 after the visible cards.
Standing on hard 14 against dealer 6. Visible Hi-Lo running count is +2.
Standing on 15 vs dealer 6, basic strategy says stand here.
RC +3, TC ~+0.5. Keeping bet at minimum 5.
Visible Hi-Lo running count is +3, true count about +0.5; betting the minimum 5.
Agreed, TC ~+0.5, staying at minimum 5.
Hitting hard 7 versus dealer 10.
Hitting hard 13 against dealer 10; visible Hi-Lo running count is about +3.
Standing on hard 16 vs dealer 10; visible Hi-Lo count is +3 (TC about +0.5).
Standing on soft 18 vs dealer Q.
RC +4, TC ~+0.7. Betting minimum 5.
Visible Hi-Lo count is +4, true count about +0.7; betting the minimum 5.
Agreed, TC ~+0.7, staying at minimum 5.
Hitting hard 15 against dealer 7.
Standing on hard 20 versus dealer 7.
Hitting hard 16 vs dealer 7, basic strategy.
RC +3, TC ~+0.6. Staying at table minimum 5.
Visible Hi-Lo running count +3, true count about +0.6. Betting 5.
Agreed, TC ~+0.6, staying at minimum 5.
Hitting hard 14 against dealer 9.
Doubling hard 10 against dealer 9.
Standing on 20 vs dealer 9.
RC 0, TC 0. Betting minimum 5.
Visible Hi-Lo running count is 0, so I’m betting the minimum 5.
Agreed, RC 0, TC 0. Betting minimum 5.
Hitting hard 12 against dealer ace.
Hitting hard 14 against dealer ace.
Hitting hard 15 against dealer ace.
Standing on hard 17 against dealer ace.
Hitting hard 16 vs dealer ace, no surrender available so basic strategy says hit.
Visible Hi-Lo count is approximately zero; betting the minimum 5.
Confirmed RC 0, TC 0 after my recount. Staying at minimum 5.
Standing on hard 19 vs dealer 6.
Standing on hard 18 vs dealer 6.
Standing on hard 16 vs dealer 6, basic strategy.
RC -2, TC ~-0.4. Betting minimum 5.
Hi-Lo running count is about -2 (true count about -0.4). Betting the minimum 5.
Agreed, RC ~-2, TC ~-0.4. Betting minimum 5.
RC -7, TC ~-1.5. Betting minimum 5.
Agreed: visible Hi-Lo count is about -7, TC about -1.5. Betting the minimum 5.
Agreed, TC ~-1.5, betting minimum 5.
Standing on hard 17 vs dealer 5.
Standing on hard 14 versus dealer 5.
Doubling soft 14 (A3) vs dealer 5, standard basic strategy play.
RC -5, TC ~-1.1. Betting minimum 5.
RC about -5, TC about -1.1. Betting the minimum 5.
Agreed, TC ~-1.1, betting minimum 5.
RC -8, TC ~-1.9. Betting minimum 5.
Agreed: running count about -8, true count about -1.9. Betting the minimum 5.
Agreed, TC ~-1.9, betting minimum 5.
Hitting hard 13 vs dealer Q.
Hitting hard 14 vs dealer Q.
Hitting hard 9 against dealer Q.
Standing on hard 17 versus dealer Q.
Standing on hard 18 vs dealer Q.
RC -9, TC ~-2.2. Betting minimum 5.
RC about -9, TC about -2.2; betting the minimum 5.
Agreed, TC ~-2.2, betting minimum 5.
Standing on hard 15 vs dealer 3.
Hitting hard 7 against dealer 3.
Standing on hard 17 against dealer 3.
Standing on hard 13 vs dealer 3, basic strategy.
RC -5, TC ~-1.3. Betting minimum 5.
Agreed: visible Hi-Lo RC about -5, TC about -1.3. Betting minimum 5.
Agreed, TC ~-1.3, betting minimum 5.
Standing on hard 15 vs dealer 4.
Hitting hard 12 vs dealer 4: the negative true count favors hitting over standing here.
Standing on hard 14 vs dealer 4, basic strategy.
RC -6, TC ~-1.6. Betting minimum 5.
Agreed: RC about -6, TC about -1.6. Betting the minimum 5.
Agreed, TC ~-1.6, staying at minimum 5.
Doubling hard 10 vs dealer 5.
Standing on hard 15 versus dealer 5.
Doubling hard 11 vs dealer 5.
RC -2, TC ~-0.6. Betting minimum 5.
RC about -2, TC about -0.6; betting the minimum 5.
Agreed, TC ~-0.6, betting minimum 5.
Standing on hard 19 vs dealer 3.
Standing on hard 13 against dealer 3.
Standing on hard 15 vs dealer 3, basic strategy.
RC -5, TC ~-1.4. Betting minimum 5.
RC approximately -5, TC approximately -1.5; betting the minimum 5.
Hitting hard 13 against dealer 7.
Standing on hard 17 vs dealer 7.
Standing on hard 18 versus dealer 7.
Standing on hard 19 vs dealer 7.
RC ~-3, TC ~-1. Negative shoe, betting minimum 5.
Agreed: the shoe is still negative, so I’m betting the minimum 5.
Agreed, TC still negative, betting minimum 5.
Standing on hard 15 vs dealer 6.
Standing on hard 17 against dealer 6.
Standing on soft 19 vs dealer 6.
RC +2, TC ~+0.7. Count barely positive, keeping bet at minimum 5.
Agreed: running count about +2, true count about +0.7. Betting the minimum 5.
Standing on hard 13 vs dealer 3.
Standing on hard 18 against dealer 3.
Standing on hard 16 vs dealer 3, basic strategy.
RC 0, TC 0. Shoe back to neutral, betting minimum 5.
The shoe appears neutral (Hi-Lo running count 0); betting the minimum 5.
Agreed, RC 0, TC 0, only 3 rounds left. Betting minimum 5.
Hitting hard 15 vs dealer K.
Hitting hard 16 vs dealer K with negative count.
Standing on hard 18 against dealer K.
Hitting hard 15 vs dealer K, basic strategy.
Count remains negative, betting minimum 5.
Count remains negative; betting the minimum 5.
Agreed, count negative, betting minimum 5 with only 2 rounds left.
Hitting hard 9 vs dealer 9.
Hitting hard 13 vs dealer 9.
Hitting hard 15 vs dealer 9.
Hitting hard 9 against dealer 9.
RC is +1, TC ~+0.4. Neutral deck on the final round, betting minimum 5.
Agreed: RC +1, TC about +0.4. Betting the minimum 5 on the final round.
Agreed, final round, TC ~+0.4, betting minimum 5.
Splitting Aces vs dealer Ace.
Hitting hard 8 vs dealer ace, basic strategy.
Standing on hard 18 vs dealer Ace, basic strategy.
These are the messages the models sent to each other at the table.
Team +33 chips over 20 rounds
All seats share one bankroll. Seat figures show each hand's contribution.
One table is a sample. Leaderboards include sample sizes and intervals.
Round 20 of 20 · 0 remaining
Team · shared bankroll
3,033 chips
Dealer
Round settled · team 0 chips
Gemini 3.8 Flash
Bet 5
Hand 1 · 18 soft · bet 5 · split
Push 0
Hand 2 · 21 soft · bet 5
Win +5Won
GPT-6 Sol
Hand 1 · 25 · bust · bet 5 · hit
Bust -5
Claude Sonnet 5
Hand 1 · 18 · bet 5 · stand
