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Blackjack Team Play table

Blackjack Team Play · 20 rounds · Sep 28, 2026, 9:29 AM UTC

Mixed team: three different models share one bankroll.

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Mixed team: three different models share one bankroll.

688 / 688

Action timeline

Model's stated reason

Fresh shoe with neutral count; betting the table minimum to preserve bankroll.

Model's stated reason

A fresh six-deck shoe offers no known player advantage, so the minimum bet limits expected loss.

Model's stated reason

Basic strategy dictates splitting 2s against dealer 7 to maximize expected value. Positive running count (+3) also supports splitting.

Model's stated reason

Hard 12 versus dealer 7 is a basic-strategy hit; standing is worse and doubling is not justified. The slightly positive count does not change this play.

Model's stated reason

Hard 14 vs dealer 7 is a basic-strategy hit; standing loses to any dealer made hand, and the count is only slightly positive.

Model's stated reason

Hard 16 against a dealer 7 is a basic-strategy hit; standing is too likely to lose, and the running count is only slightly positive.

Model's stated reason

Hard 12 against a dealer 7 is a basic-strategy hit; doubling would risk busting without a sufficient count edge.

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

Agent table chat

Chat on
Gemini 3.8 Flash#1

Fresh shoe, count is 0. Betting 5.

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GPT-6 Sol#3

Fresh shoe, running Hi-Lo count 0; betting minimum. Let's share count updates after exposed cards.

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DeepSeek V4.1 Flash#5

Fresh shoe, count 0. Betting minimum 5; will share count updates after cards are revealed.

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Gemini 3.8 Flash#14

RC +2. Hitting hard 13 vs 7.

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GPT-6 Sol#17

RC +2 through exposed cards. Hitting hard 12 vs dealer 7.

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GPT-6 Sol#20

Standing on hard 18 vs dealer 7. Visible cards put the Hi-Lo running count at +3.

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DeepSeek V4.1 Flash#22

RC +3. Splitting pair of 2s vs dealer 7.

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DeepSeek V4.1 Flash#26

My Hi-Lo count is +1 through exposed cards. Hitting hard 12 vs 7.

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DeepSeek V4.1 Flash#29

RC +2. Hitting hard 14 vs dealer 7.

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DeepSeek V4.1 Flash#32

RC +3. Hitting hard 16 vs dealer 7.

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DeepSeek V4.1 Flash#35

RC +4 through exposed cards. Standing on hard 20 vs dealer 7.

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DeepSeek V4.1 Flash#37

RC +4 through exposed cards. Hitting hard 12 vs dealer 7.

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DeepSeek V4.1 Flash#40

RC +5 through exposed cards. Hitting hard 14 vs dealer 7.

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DeepSeek V4.1 Flash#43

Standing on hard 20 vs dealer 7. RC +6 through exposed cards.

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Gemini 3.8 Flash#50

RC is +8, ~5.6 decks remaining (TC +1.4). Sizing up to 10.

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GPT-6 Sol#52

Hi-Lo RC +8, about 5.6 decks left (TC +1.4). This looks like a small positive edge, so I'm betting the 50-chip maximum to maximize expected chips.

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DeepSeek V4.1 Flash#54

Confirmed RC +8, ~5.6 decks left, TC +1.4. Positive edge, so I'm also betting 50 to maximize team EV.

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Gemini 3.8 Flash#63

Standing on hard 13 vs 4. RC remains +8.

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GPT-6 Sol#65

Standing on hard 12 vs dealer 4. Visible-card Hi-Lo running count is +8.

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Gemini 3.8 Flash#71

RC +8, ~5.5 decks remaining (TC +1.5). Sizing up to 50.

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GPT-6 Sol#73

Visible-card Hi-Lo count is +8 with about 5.5 decks left (true count ~+1.5). Betting 50 for the small estimated positive edge.

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DeepSeek V4.1 Flash#75

Confirmed RC +8, ~5.5 decks left (TC +1.5). Betting 50 to maximize team EV.

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Gemini 3.8 Flash#85

Hitting hard 15 vs 10. Visible RC +8 (TC ~+1.5).

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GPT-6 Sol#88

Hitting hard 12 vs dealer 10; standing or doubling is worse here.

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GPT-6 Sol#91

Standing on hard 16 vs dealer 10. Visible Hi-Lo running count is +9 (true count about +1.7).

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DeepSeek V4.1 Flash#93

Hitting hard 14 vs dealer 10. Visible RC +9.

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DeepSeek V4.1 Flash#96

Standing on hard 18 vs dealer 10. Visible RC +9; no hit needed.

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Gemini 3.8 Flash#102

RC +10, ~5.2 decks remaining (TC ~+1.9). Betting 50.

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GPT-6 Sol#104

Visible-card Hi-Lo count is +10 with about 5.2 decks remaining (true count ~+1.9). Betting 50 for the estimated positive edge.

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DeepSeek V4.1 Flash#106

RC +10, ~5.2 decks left (TC ~+1.9). Betting 50 to maximize team EV.

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Gemini 3.8 Flash#115

Standing on 20 vs 7. RC +7.

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GPT-6 Sol#117

Hitting hard 15 vs dealer 7. Visible Hi-Lo running count is +7.

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GPT-6 Sol#120

Standing on hard 18 vs dealer 7. Visible Hi-Lo running count is +8.

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DeepSeek V4.1 Flash#122

Standing on 20 vs 7. No split.

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Gemini 3.8 Flash#128

RC +8, ~5.0 decks remaining (TC ~+1.6). Betting 50.

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GPT-6 Sol#130

Hi-Lo running count +8 after 50 cards; about 5 decks remain (true count ~+1.6). Betting 50 for the estimated positive edge.

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DeepSeek V4.1 Flash#132

RC +8. Accounting for the 62-card cut, about 3.8 decks remain, so TC is roughly +2.1. Betting 50.

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Gemini 3.8 Flash#142

Hitting hard 13 vs 10. RC is +6.

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GPT-6 Sol#145

Hitting hard 12 vs dealer 10; standing and doubling are worse.

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GPT-6 Sol#148

Standing on hard 18 vs dealer 10.

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DeepSeek V4.1 Flash#150

Standing on soft 20 vs dealer 10. RC +8, TC ~+2.1. Dealer likely has 20; we push at worst, win if they bust or 17-19.

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Gemini 3.8 Flash#156

RC +7, ~4.8 decks remaining (TC ~+1.5). Betting 50.

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GPT-6 Sol#158

Hi-Lo running count +7 after 61 exposed cards; about 4.8 decks remain (true count ~+1.5). Betting 50 for the estimated positive edge.

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DeepSeek V4.1 Flash#160

RC +7 after 61 cards; with 62-card cut, about 3.6 decks remain, TC ~+1.9. Betting 50 to maximize team EV.

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Gemini 3.8 Flash#169

Standing on hard 13 vs 6. RC is +10, TC ~+2.1.

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GPT-6 Sol#171

Standing on hard 12 vs dealer 6; dealer's bust risk makes hitting unfavorable.

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DeepSeek V4.1 Flash#173

Standing on hard 13 vs dealer 6. Dealer bust card; no need to hit. Count remains positive.

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Gemini 3.8 Flash#179

RC +10, ~4.65 decks remaining (TC ~+2.15). Betting 50.

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GPT-6 Sol#181

Hi-Lo RC +10 after 70 exposed cards; ~4.65 decks remain, TC ~+2.15. Betting 50 for the positive edge.

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DeepSeek V4.1 Flash#183

RC +10 after 70 cards; with 62-card cut, ~3.46 decks remain, TC ~+2.9. Betting 50 to maximize team EV.

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Gemini 3.8 Flash#192

Standing on 20 vs 2. Visible RC +9, TC ~+2.0.

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GPT-6 Sol#194

Standing on hard 14 vs dealer 2. Visible Hi-Lo running count is +9.

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DeepSeek V4.1 Flash#196

Hitting soft 13 vs dealer 2. RC +10, TC ~+2.9; double not warranted here.

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DeepSeek V4.1 Flash#199

Standing on hard 13 vs dealer 2. RC +10, TC ~+2.9.

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Gemini 3.8 Flash#205

RC +7, ~4.5 decks remaining (TC ~+1.6). Betting 50.

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GPT-6 Sol#207

Visible-card Hi-Lo count is +7 after 80 cards; about 4.46 decks remain (TC ~+1.6). Betting 50 for the estimated positive edge.

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DeepSeek V4.1 Flash#209

RC +7 after 80 cards; with 62-card cut, ~3.27 decks remain, TC ~+2.1. Betting 50.

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Gemini 3.8 Flash#218

Doubling hard 10 (5,5) vs dealer 9. Visible RC is +8.

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DeepSeek V4.1 Flash#221

Doubling hard 11 vs dealer 9; count remains positive, so I'm taking the extra card with doubled stake.

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Gemini 3.8 Flash#229

RC +9, ~4.2 decks remaining (TC ~+2.1). Betting 50.

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GPT-6 Sol#231

Hi-Lo running count +9 with about 4.2 decks remaining (true count ~+2.1). Betting 50 for the positive estimated edge; the 62-card cut does not reduce the decks used for true count.

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DeepSeek V4.1 Flash#233

RC +9 after 92 cards; with 62-card cut, ~3.0 decks left, TC ~+3.0. Betting 50 to maximize team EV.

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Gemini 3.8 Flash#242

Hitting soft 14 vs 7. RC +8.

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Gemini 3.8 Flash#245

Standing on soft 19 vs dealer 7. RC +9.

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GPT-6 Sol#247

Hitting hard 13 vs dealer 7.

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GPT-6 Sol#250

Standing on hard 20 vs dealer 7.

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DeepSeek V4.1 Flash#252

Standing on hard 18 vs dealer 7. No hit or double here.

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Gemini 3.8 Flash#258

RC +10, ~4.0 decks remaining (TC +2.5). Betting 50.

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GPT-6 Sol#260

Hi-Lo RC +10 with about 4.0 decks remaining (TC +2.5). Betting 50; the 62-card cut does not change the decks remaining for true count.

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DeepSeek V4.1 Flash#262

RC +10, ~4.0 decks remaining, TC ~+2.5. Positive edge; betting 50 to maximize team EV.

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Gemini 3.8 Flash#271

Doubling hard 10 vs 2. Visible RC +13.

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GPT-6 Sol#274

Standing on hard 12 vs dealer 2. Visible Hi-Lo RC is about +12 (TC ~+3), near the 12-vs-2 stand index.

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DeepSeek V4.1 Flash#276

Standing on hard 18 vs dealer 2. Count remains positive; no hit or double here.

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Gemini 3.8 Flash#283

RC +11, ~3.8 decks remaining (TC ~+2.9). Betting 50.

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GPT-6 Sol#285

Hi-Lo running count +11, about 3.8 decks remain (true count ~+2.9). Betting 50 for the positive edge.

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DeepSeek V4.1 Flash#287

RC +11, ~2.6 decks left before the cut card, TC ~+4.2. Betting 50 to maximize team EV.

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Gemini 3.8 Flash#299

RC +5, ~3.65 decks remaining (TC ~+1.4). Positive edge, betting 50.

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GPT-6 Sol#301

I agree with RC +5 and ~3.65 decks remaining (TC ~+1.4). Betting 50 for the estimated positive edge.

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DeepSeek V4.1 Flash#303

RC +5 after 122 cards; with the 62-card cut, about 2.5 decks remain, TC ~+2.0. Positive edge, betting 50.

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Gemini 3.8 Flash#313

Hitting soft 15 vs Ace. RC is +4.

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Gemini 3.8 Flash#316

Hitting hard 13 vs Ace. RC remains +4.

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GPT-6 Sol#319

Standing on hard 20 versus dealer Ace; do not split tens.

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DeepSeek V4.1 Flash#321

RC +2 after 131 cards; ~2.3 decks remain before cut, TC ~+0.9. Hitting hard 10 vs Ace; double not warranted.

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DeepSeek V4.1 Flash#324

Standing on hard 20 vs dealer Ace. No hit; count remains positive.

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Gemini 3.8 Flash#331

RC +1 after 135 cards, ~3.4 decks remaining (TC ~+0.3). Edge is slightly negative/neutral, betting minimum 5.

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GPT-6 Sol#333

RC appears to be +1 after 135 exposed cards; about 3.4 decks remain (TC ~+0.3). Betting the 5-chip minimum.

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DeepSeek V4.1 Flash#335

RC +1 after 135 cards; with the 62-card cut, about 2.2 decks remain, TC ~+0.45. Edge is negligible, so I'm betting the 5-chip minimum.

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Gemini 3.8 Flash#344

Hitting hard 13 vs 7. RC remains +1.

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Gemini 3.8 Flash#347

Standing on hard 17 vs dealer 7. RC is +2.

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GPT-6 Sol#349

Hitting hard 16 vs dealer 7; standing is worse here.

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DeepSeek V4.1 Flash#352

Hitting hard 13 vs dealer 7. Count remains around +1; no double here.

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Gemini 3.8 Flash#358

RC is 0 after 146 cards (~3.2 decks remaining, TC 0.0). Betting minimum 5.

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GPT-6 Sol#360

Hi-Lo running count is 0 after 146 visible cards; betting the 5-chip minimum.

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DeepSeek V4.1 Flash#362

RC 0 after 146 cards; TC 0.0. No edge, betting minimum 5.

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Gemini 3.8 Flash#371

Standing on hard 17 vs dealer 6.

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GPT-6 Sol#373

Standing on hard 15 vs dealer 6; let the dealer draw.

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Gemini 3.8 Flash#379

RC is -3 after 155 cards (~3.0 decks remaining, TC ~-1.0). Negative count, betting minimum 5.

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GPT-6 Sol#381

Hi-Lo RC -3 after 155 exposed cards, roughly 3 decks remain (TC -1). Betting the 5-chip minimum.

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DeepSeek V4.1 Flash#383

Confirmed RC -3 after 155 cards. With the 62-card cut, about 1.8 decks remain, TC ~-1.6. Negative edge; betting minimum 5.

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Gemini 3.8 Flash#392

Standing on hard 16 vs dealer 4. Visible RC remains -3.

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GPT-6 Sol#394

Standing on hard 18 vs dealer 4.

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DeepSeek V4.1 Flash#396

Standing on hard 16 vs dealer 4. Negative count, dealer bust chance is our best edge; no hit.

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Gemini 3.8 Flash#402

RC is -3 after 164 cards (~2.8 decks remaining, TC ~-1.1). Negative count, betting minimum 5.

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GPT-6 Sol#404

Hi-Lo running count is -3 after 164 exposed cards, about 2.85 decks remain (TC ~-1.1). Betting the minimum 5.

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DeepSeek V4.1 Flash#406

RC -3 after 164 cards. With the 62-card cut, about 86 cards (~1.65 decks) remain before shuffle, so TC is roughly -1.8. Negative edge; betting minimum 5.

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Gemini 3.8 Flash#416

Standing on hard 18 vs King. Visible RC is -5.

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GPT-6 Sol#418

Hitting hard 12 vs dealer King; standing is unlikely to win.

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GPT-6 Sol#421

Hitting hard 15 vs dealer King; negative count favors drawing.

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DeepSeek V4.1 Flash#424

Hitting hard 15 vs dealer King. Standing is worse; no double with 15.

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Gemini 3.8 Flash#430

RC is -5 after 175 cards (~2.6 decks remaining, TC ~-1.9). Negative edge, betting minimum 5.

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GPT-6 Sol#432

Hi-Lo RC -5 after 175 exposed cards, with about 2.6 decks remaining (TC ~-1.9). Betting the 5-chip minimum.

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DeepSeek V4.1 Flash#434

RC -5 after 175 cards; with the 62-card cut, about 75 cards (~1.4 decks) remain, so TC is roughly -3.5. Negative edge, betting minimum 5.

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Gemini 3.8 Flash#443

Standing on hard 18 vs dealer 5. Visible RC remains -5.

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GPT-6 Sol#445

Doubling soft 16 (A,5) against dealer 5.

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DeepSeek V4.1 Flash#448

RC -4 after 183 cards; ~67 cards left before cut, TC ~ -3.1. Negative count makes standing on 13 vs 5 worse; hitting is correct. No double.

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DeepSeek V4.1 Flash#451

Standing on hard 18 vs dealer 5. Dealer bust chance is high; no need to hit.

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Gemini 3.8 Flash#458

RC is -2 after 187 cards (~2.4 decks remaining, TC ~-0.8). Negative count, betting minimum 5.

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GPT-6 Sol#460

RC approximately -2 after 187 exposed cards; true count about -0.8 using all remaining cards. Betting the 5-chip minimum.

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DeepSeek V4.1 Flash#462

RC -2 after 187 cards; cut-adjusted about 1.2 decks remain, TC roughly -1.7. Negative edge, so I'm betting the 5-chip minimum.

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Gemini 3.8 Flash#472

Hitting hard 13 vs dealer 10. Visible RC is -1.

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Gemini 3.8 Flash#475

Hitting hard 15 vs dealer 10. Visible RC is 0.

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GPT-6 Sol#478

Hitting hard 10 (5,5) vs dealer 10; keeping the fives together.

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GPT-6 Sol#481

Hitting hard 15 vs dealer 10; standing is worse at this count.

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GPT-6 Sol#484

Standing on hard 17 versus dealer 10.

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DeepSeek V4.1 Flash#486

Standing on hard 19 vs dealer 10. Negative count; no hit or double here.

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Gemini 3.8 Flash#491

RC +2 after 199 cards, ~2.2 decks remaining (TC ~+0.9). Near neutral edge, betting minimum 5.

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GPT-6 Sol#493

RC +2 after 199 exposed cards; about 2.2 decks remain, so TC is roughly +0.9. Betting the minimum at this near-neutral count.

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DeepSeek V4.1 Flash#495

RC +2 after 199 cards. Cut-adjusted: 51 cards (~1 deck) left before shuffle, TC ~+2.0. Positive edge, betting 50.

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Gemini 3.8 Flash#505

Hitting hard 13 vs dealer Jack.

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GPT-6 Sol#508

Hitting hard 12 against dealer Jack. The dealer has checked for blackjack.

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GPT-6 Sol#511

Hitting hard 13 vs dealer Jack.

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GPT-6 Sol#514

Hitting hard 14 vs dealer Jack.

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GPT-6 Sol#517

Hitting hard 15 against dealer Jack; the count is not high enough to justify standing.

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DeepSeek V4.1 Flash#520

Hitting hard 14 vs dealer J; no double here.

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Gemini 3.8 Flash#526

RC is -1 after 213 cards, ~1.9 decks remaining (TC ~-0.5). Negative edge, betting minimum 5.

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GPT-6 Sol#528

Hi-Lo RC -1 after 213 exposed cards; about 1.9 decks remain. Betting the 5-chip minimum.

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DeepSeek V4.1 Flash#530

RC -1 after 213 cards. With 62-card cut, ~37 cards left before shuffle (~0.7 decks), TC ~ -1.4. Negative edge, so I'm betting the 5-chip minimum.

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Gemini 3.8 Flash#539

Standing on hard 13 vs dealer 5. Dealer is in a bust position.

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GPT-6 Sol#541

Standing on soft 19 vs dealer 5.

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DeepSeek V4.1 Flash#543

Standing on hard 19 vs dealer 5. Dealer bust card; no hit or double here.

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

Team result

Team -578 chips over 20 rounds

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

Gemini 3.8 Flash · seat 1-355 chips
GPT-6 Sol · seat 2-15 chips
DeepSeek V4.1 Flash · seat 3-208 chips

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