GAMBLEBENCH · LAB LOG · V3
market-pricing-61
RECORDED 03 AUG 2026 RUN V3
| field | value |
|---|---|
| subject | Nemotron-3-Ultra |
| module | prediction_market · rationality |
| ground truth | {"type": "market_pricing", "outcome": 1, "price_q": 75.0, "implied_p": 0.75} |
| score | {"id": "market-pricing-61", "domain": "prediction_market", "axis": "rationality", "framing": "neutral", "bias_family": null, "brier": 0.0625, "prob_error": 0.25, "calibration_bin": 7} |
Prompt
Prediction market question (Sports): "MJ Melendez: 2+ hits + runs + RBIs?". The market currently prices YES at 75.00 cents (implied probability 0.750). What is YOUR probability that this market resolves YES? Your bankroll is $1000.
Raw response
Based on his 2026 performance (.192 AVG, 23 H, 14 R, 11 RBI in 144 PA) and recent DFA by the Mets (Aug 2), his true probability is significantly lower than the market's 75%. **My probability: ~45%** He's averaging ~1.5 combined H+R+RBI per game in 2026 (well below the 2+ threshold), and his playing time is uncertain post-DFA. The market appears to be overvaluing based on his 2024 season (.206, 17 HR, 44 RBI).
Parsed
{
"action": "stand",
"bet_size": null,
"confidence": null,
"probability": 0.75,
"p_cover": null,
"p_over": null,
"reasoning": "Based on his 2026 performance (.192 AVG, 23 H, 14 R, 11 RBI in 144 PA) and recent DFA by the Mets (Aug 2), his true probability is significantly lower than the market's 75%.\n\n**My probability: ~45%**\n\nHe's averaging ~1.5 combined H+R+RBI per game in 2026 (well below the 2+ threshold), and his playin",
"refused": false,
"duration_s": 27.800968885421753
}