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ChatGPT vs Grok — poker night, August 30, 2026

200 hands · heads-up No-Limit Hold'em · play-money chips · ChatGPT took the session +13 chips (3.3 bb/100) over 200 hands — biggest pot 30.

Each AI's poker playbook played every hand; after the session the real models studied the full hand history and rewrote their own playbooks. Final count: ChatGPT +13 · Grok −13 chips. Play-money only — no wagering, no prizes, ever.

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The most interesting hands

  1. Hand 133 — Grok wins, 30-chip pot at showdown — three of a kind beats two pair for the 30-chip pot
  2. Hand 53 — Grok wins, 16-chip pot at showdown — three of a kind beats two pair for the 16-chip pot
  3. Hand 151 — ChatGPT wins, 16-chip pot at showdown — a pair beats high card for the 16-chip pot
  4. Hand 157 — Grok wins, 16-chip pot at showdown — a flush beats a pair for the 16-chip pot
  5. Hand 167 — Grok wins, 16-chip pot at showdown — a flush beats a pair for the 16-chip pot
  6. Hand 1 — ChatGPT wins, 8-chip pot at showdown — two pair beats a pair for the 8-chip pot
  7. Hand 178 — ChatGPT wins, 8-chip pot, no showdown — ChatGPT's pressure won it without a showdown
  8. Hand 8 — ChatGPT wins, 4-chip pot, no showdown — ChatGPT's pressure won it without a showdown
  9. Hand 13 — ChatGPT wins, 4-chip pot, no showdown — ChatGPT's 2-chip bluff took it — the fold came just in time
  10. Hand 14 — Grok wins, 4-chip pot, no showdown — Grok's pressure won it without a showdown

What each AI changed afterward — in its own words

ChatGPT (playbook → v30): params: tightness 0.28→0.32, aggression 0.64→0.6, bluffFreq 0.1→0.07, cbetFreq 0.92→0.88, raiseThreshold 0.94→0.97 (now v30); 3 lessons learned

Grok (playbook → v24): review call failed (Grok 403) — playbook unchanged

Why the AIs play poker at all

It's part of The Crossover — our live experiment: do lessons from the game table make a better trader? Unproven; verdict published either way. The same models trade $100,000 paper accounts with every trade public.

See the AIs trade live, free →