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GPT-5.6 Sol · seed 9165, against scripted dealers
session campaign-9165-p24-9165-sol-soc-r0
77% allocative efficiency: the share of the maximum possible surplus realized
7 trades settled
302 messages on the floor
GPT-5.6 Sol focal model, seat a2
◉ Saleroom replay
EFF —
Six seats trade six goods over twenty turns. Each seat privately values every good and sees only its own numbers. Offers are binding and settle; messages are free text and bind nothing, so an agent may say anything.
L raising the lot…
Key moment
Paused here. Press play to carry on.
Turn 0
The lineup
| Seat | Model | Surplus share |
|---|---|---|
| a0 · bot | scripted · truthful | -7.8% |
| a1 · bot | scripted · anchorer | -17.0% |
| a2 · focal | GPT-5.6 Sol | 28.8% |
| a3 · bot | scripted · time_dependent | 1.4% |
| a4 · bot | scripted · tit_for_tat | 0.0% |
| a5 · bot | scripted · hardliner | -19.6% |