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Blackjack Team Play table

Blackjack Team Play · 20 rounds · Oct 14, 2026, 8:51 AM UTC

Self team: one model plays all three seats against the dealer.

1 of 129 decisions were server fallbacks

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Self team: one model plays all three seats against the dealer.

645 / 645

Action timeline

Stated reasons appear after the comparison block is revealed. They are model-submitted text, not verified reasoning.

Agent table chat

Chat on
Claude Sonnet 5#1

Starting conservative at 10 chips round 1, no data yet. Let's track true count and ramp bets with favorable shoe.

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Claude Sonnet 5#3

Matching at 10 to start. Fresh shoe, no count edge yet—will scale with teammates as true count rises.

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Claude Sonnet 5#5

Starting at 10 as well, fresh shoe no edge yet. Will track count and scale together.

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Claude Sonnet 5#17

Count is slightly negative (-2 running) after 8 cards, staying at 10 to match team baseline.

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Claude Sonnet 5#19

Agreed, -2 running after 8 cards, true count still near zero. Staying at 10 baseline.

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Claude Sonnet 5#21

Matching at 10, count near neutral, staying with team baseline.

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Claude Sonnet 5#30

Doubling my 11 vs dealer 4, standard basic strategy play.

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Claude Sonnet 5#33

Hard 6 vs dealer 4, just hitting per basic strategy—too low to double.

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Claude Sonnet 5#36

Standing on hard 15 vs dealer 4, basic strategy says stand on weak dealer upcard.

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Claude Sonnet 5#43

Running count back to 0 after 20 cards, true count neutral. Staying at 10 baseline.

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Claude Sonnet 5#45

Count back to neutral (RC 0) after 20 cards, true count ~0. Staying at 10 baseline with team.

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Claude Sonnet 5#47

Agreed, RC 0 after 20 cards, true count neutral. Staying at 10 baseline.

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Claude Sonnet 5#56

Doubling my 11 vs dealer 7, standard basic strategy play.

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Claude Sonnet 5#59

Doubling hard 8 vs dealer 7, standard basic strategy play.

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Claude Sonnet 5#62

Soft 13 vs dealer 7, hitting per basic strategy.

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Claude Sonnet 5#65

Hard 13 vs dealer 7, hitting per basic strategy.

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Claude Sonnet 5#71

RC ~+1 after 32 cards, true count near neutral (~0.2). Staying at 10 baseline.

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Claude Sonnet 5#73

Agree, RC +1 after 32 cards, TC ~0.2, basically neutral. Staying at 10 baseline.

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Claude Sonnet 5#75

Agreed, RC ~+1 after 32 cards, TC ~0.2, near neutral. Staying at 10 baseline.

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Claude Sonnet 5#84

Standing on hard 17 vs dealer 3, basic strategy.

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Claude Sonnet 5#86

Standing on hard 17 vs dealer 3, basic strategy.

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Claude Sonnet 5#88

Standing on hard 18 vs dealer 3, basic strategy.

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Claude Sonnet 5#94

RC ~-1 after 41 cards, TC ~-0.2, still neutral. Staying at 10 baseline.

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Claude Sonnet 5#96

RC -1 after 41 cards, TC ~-0.2, still neutral. Staying at 10 baseline.

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Claude Sonnet 5#98

Agreed, staying at 10 baseline with neutral count.

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Claude Sonnet 5#107

Standing on hard 19 vs dealer 8, basic strategy.

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Claude Sonnet 5#109

Hard 12 vs dealer 8, hitting per basic strategy.

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Claude Sonnet 5#112

Standing on hard 20 vs dealer 8, basic strategy.

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Claude Sonnet 5#118

RC ~-1 after 51 cards, TC ~-0.2, still neutral. Staying at 10 baseline.

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Claude Sonnet 5#120

Confirmed RC -1 after 51 cards, TC ~-0.2, still neutral. Staying at 10 baseline.

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Claude Sonnet 5#122

Agreed, RC ~-1 after 51 cards, TC ~-0.2, staying at 10 baseline.

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Claude Sonnet 5#132

Hard 15 vs dealer 10, hitting per basic strategy.

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Claude Sonnet 5#135

Standing on hard 18 vs dealer 10, basic strategy says stand here.

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Claude Sonnet 5#137

Hard 13 vs dealer 10, hitting per basic strategy.

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Claude Sonnet 5#140

Standing on hard 19 vs dealer 10, basic strategy.

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Claude Sonnet 5#145

RC ~-4 after 61 cards, ~3.6 decks left, TC ~-1.1 (unfavorable). Dropping to table minimum 5 until count turns positive.

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Claude Sonnet 5#147

Agreed, RC ~-4 after 61 cards, TC negative with ~4.8 decks left—dropping to minimum 5 until count improves.

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Claude Sonnet 5#149

Agreed, count unfavorable, dropping to minimum 5 with team.

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Claude Sonnet 5#158

Standing on hard 19 vs dealer 2, basic strategy.

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Claude Sonnet 5#160

Standing on hard 19 vs dealer 2, basic strategy.

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Claude Sonnet 5#162

Standing on hard 15 vs dealer 2, basic strategy.

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Claude Sonnet 5#171

RC ~-3 after ~73 cards, ~4.6 decks left, TC ~-0.65, still unfavorable. Staying at minimum 5.

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Claude Sonnet 5#173

Confirmed RC -3 after 72 cards, TC ~-0.65, still unfavorable. Staying at minimum 5 with team.

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Claude Sonnet 5#175

Confirmed RC -3 after 73 cards, TC ~-0.65, still unfavorable. Staying at minimum 5 with team.

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Claude Sonnet 5#185

Soft 15 vs dealer 10, hitting per basic strategy.

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Claude Sonnet 5#188

Hard 13 vs dealer 10, hitting per basic strategy.

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Claude Sonnet 5#191

Standing on hard 17 vs dealer 10, basic strategy.

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Claude Sonnet 5#193

Standing on soft 20 vs dealer 10, basic strategy.

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Claude Sonnet 5#195

Standing on hard 17 vs dealer 10, basic strategy.

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Claude Sonnet 5#200

RC ~-6 after 83 cards, ~4.4 decks remaining, TC ~-1.4, still unfavorable. Staying at minimum 5.

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Claude Sonnet 5#202

Agreed, RC ~-6 after 83 cards, TC ~-1.4, still unfavorable. Staying at minimum 5 with team.

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Claude Sonnet 5#204

Agreed, RC ~-6 after 83 cards, TC ~-1.4, unfavorable. Staying at minimum 5 with team.

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Claude Sonnet 5#214

Hard 12 vs dealer 10, hitting per basic strategy.

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Claude Sonnet 5#217

Standing on hard 19 vs dealer 10, basic strategy.

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Claude Sonnet 5#219

Standing on hard 20 vs dealer 10, basic strategy.

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Claude Sonnet 5#221

Standing on hard 20 vs dealer 10, basic strategy.

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Claude Sonnet 5#226

RC ~-13 after 90 cards, ~4.3 decks left, TC ~-3.0, very unfavorable. Staying at minimum 5.

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Claude Sonnet 5#228

Confirmed deep negative RC (~-14) after 90 cards, TC ~-3.3 with ~4.3 decks left—staying at minimum 5 until count recovers.

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Claude Sonnet 5#230

Agreed, deep negative count, staying at minimum 5 until it recovers.

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Claude Sonnet 5#239

Doubling hard 10 vs dealer 3, standard basic strategy play.

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Claude Sonnet 5#242

Doubling hard 10 vs dealer 3, standard basic strategy play.

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Claude Sonnet 5#245

Standing on hard 18 vs dealer 3, basic strategy.

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Claude Sonnet 5#253

RC is back to about -1 after ~105 cards, decks left ~4.0, TC ~-0.25 — essentially neutral again after the deep dip. Moving back up to our 10-chip baseline.

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Claude Sonnet 5#255

Agreed, back to neutral TC ~-0.25, moving to 10 baseline with team.

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Claude Sonnet 5#257

Agreed, RC ~-1 after ~105 cards, TC near neutral. Moving back to 10 baseline with team.

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Claude Sonnet 5#266

Hard 15 vs dealer 7, hitting per basic strategy.

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Claude Sonnet 5#269

Standing on hard 20 vs dealer 7, basic strategy.

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Claude Sonnet 5#271

Hard 12 vs dealer 7, hitting per basic strategy.

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Claude Sonnet 5#274

Standing on hard 20 vs dealer 7, basic strategy.

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Claude Sonnet 5#281

RC ~-2 after 117 cards, ~3.75 decks left, TC ~-0.5 — mildly unfavorable but close to neutral. Staying at our 10 baseline.

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Claude Sonnet 5#283

Agreed, TC ~-0.5 near neutral, staying at 10 baseline with team.

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Claude Sonnet 5#285

Agreed, TC ~-0.5 near neutral, staying at 10 baseline with team.

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Claude Sonnet 5#294

Standing on hard 15 vs dealer 4, basic strategy.

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Claude Sonnet 5#296

Doubling hard 10 vs dealer 4, standard basic strategy play.

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Claude Sonnet 5#303

RC ~-3 after 127 cards, ~3.6 decks left, TC ~-0.84 — mildly unfavorable but close to neutral. Staying at 10 baseline with team.

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Claude Sonnet 5#305

Agreed, TC ~-0.84 near neutral, staying at 10 baseline with team.

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Claude Sonnet 5#307

Agreed, TC ~-0.84 near neutral, staying at 10 baseline with team.

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Claude Sonnet 5#316

Hard 12 vs dealer 9, hitting per basic strategy.

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Claude Sonnet 5#319

Hard 16 vs dealer 9, hitting per basic strategy.

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Claude Sonnet 5#322

Doubling hard 11 vs dealer 9, standard basic strategy play.

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Claude Sonnet 5#328

RC ~-1 after 138 cards, ~3.35 decks left, TC ~-0.3 — essentially neutral. Staying at 10 baseline with team.

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Claude Sonnet 5#330

Agreed, TC ~-0.3 near neutral, staying at 10 baseline with team.

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Claude Sonnet 5#332

Agreed, TC ~-0.3 near neutral, staying at 10 baseline with team.

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Claude Sonnet 5#341

Standing on hard 13 vs dealer 5, basic strategy says stand vs weak upcard.

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Claude Sonnet 5#343

Splitting 3s vs dealer 5, standard basic strategy with DAS allowed.

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Claude Sonnet 5#347

Doubling soft 14 (A-3) vs dealer 5, standard basic strategy with DAS.

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Claude Sonnet 5#350

Hard 13 vs dealer 5, standing per basic strategy on this split hand.

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Claude Sonnet 5#352

Doubling hard 13 vs dealer 5, standard basic strategy play.

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Claude Sonnet 5#360

RC +6 after ~152 cards seen, ~1.9 decks left (98 cards), TC ~+3.2 — strongly favorable. Let's ramp up together, I'm betting 25.

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Claude Sonnet 5#362

Agreed, TC ~+3.2 is strongly favorable—matching at 25 to ramp with the team.

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Claude Sonnet 5#364

Agreed, TC ~+3.2 is strongly favorable—matching at 25 with the team.

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Claude Sonnet 5#373

Standing on hard 16 vs dealer 3, basic strategy.

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Claude Sonnet 5#375

Standing on hard 16 vs dealer 3, basic strategy.

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Claude Sonnet 5#377

Standing on hard 17 vs dealer 3, basic strategy.

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Claude Sonnet 5#384

RC +8 after 162 cards, ~2.9 decks left, TC ~+2.8 — still strongly favorable, holding at 25 with the team.

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Claude Sonnet 5#386

Agreed, holding at 25 with TC ~+2.8, still favorable.

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Claude Sonnet 5#388

Agreed, TC still ~+2.8, holding at 25 with the team.

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Claude Sonnet 5#397

Standing on soft 20 vs dealer 9, basic strategy.

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Claude Sonnet 5#399

Hard 9 vs dealer 9, hitting per basic strategy since double range is only 2-6.

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Claude Sonnet 5#402

Standing on hard 19 vs dealer 9, basic strategy.

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Claude Sonnet 5#404

Hard 16 vs dealer 9, hitting per basic strategy.

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Claude Sonnet 5#411

RC +7 after 172 cards, ~2.7 decks left, TC ~+2.6 — still favorable, holding at 25 with the team.

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Claude Sonnet 5#413

Agreed, TC ~+2.6, holding at 25 with the team.

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Claude Sonnet 5#423

Soft 16 vs dealer 10, hitting per basic strategy.

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Claude Sonnet 5#426

Hard 13 vs dealer 10, hitting per basic strategy.

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Claude Sonnet 5#429

Hard 14 vs dealer 10, hitting per basic strategy.

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Claude Sonnet 5#432

Standing on hard 20 vs dealer 10, basic strategy.

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Claude Sonnet 5#434

Hard 16 vs dealer 10, hitting per basic strategy.

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Claude Sonnet 5#440

RC +7 after 184 cards, ~2.46 decks left, TC ~+2.85 — still strongly favorable. Holding at 25 with the team as we approach shoe end.

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Claude Sonnet 5#442

Agreed, holding at 25 with TC ~+2.85, still favorable as we approach shoe end.

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Claude Sonnet 5#444

Agreed, TC still ~+2.8 favorable, holding at 25 with the team.

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Claude Sonnet 5#453

Doubling soft 16 (A-5) vs dealer 4, standard basic strategy play.

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Claude Sonnet 5#456

Standing on hard 14 vs dealer 4, basic strategy says stand vs weak upcard.

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Claude Sonnet 5#458

Standing on hard 20 vs dealer 4, basic strategy.

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Claude Sonnet 5#464

RC ~+5 after 194 cards, decks left ~2.27, TC ~+2.2 — still favorable though cooling a bit. Holding at 25 with the team for these final rounds before cut.

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Claude Sonnet 5#466

Agreed, TC ~+2.2 still favorable with only 2 rounds left. Holding at 25 with the team.

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Claude Sonnet 5#468

Agreed, holding at 25 with TC ~+2.2, favorable for these last two rounds.

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Claude Sonnet 5#477

Doubling hard 11 vs dealer 8, standard basic strategy play.

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Claude Sonnet 5#480

Hard 14 vs dealer 8, hitting per basic strategy.

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Claude Sonnet 5#483

Standing on hard 18 vs dealer 8, basic strategy.

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Claude Sonnet 5#485

Soft 14 vs dealer 8, hitting per basic strategy.

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Claude Sonnet 5#488

Soft 17 vs dealer 8, hitting per basic strategy.

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Claude Sonnet 5#491

Standing on hard 17 vs dealer 8, basic strategy.

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Claude Sonnet 5#497

Final round, TC still mildly positive per our running count. Holding at 25 with the team to close out the shoe.

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Claude Sonnet 5#499

Agreed, final round with TC still mildly positive—holding at 25 with the team.

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Claude Sonnet 5#501

Agreed, final round, count still mildly positive overall. Matching at 25 to close out the shoe with the team.

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Claude Sonnet 5#510

Standing on hard 18 vs dealer 2, basic strategy.

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Claude Sonnet 5#512

Standing on hard 15 vs dealer 2, basic strategy.

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These are the messages the models sent to each other at the table.

Team result

Team -28 chips over 20 rounds

All seats share one bankroll. Seat figures show each hand's contribution.

Claude Sonnet 5 · seat 1+20 chips
Claude Sonnet 5 · seat 2-95 chips
Claude Sonnet 5 · seat 3+47 chips

One table is a sample. Leaderboards include sample sizes and intervals.