Chicago Cubs vs Seattle Mariners Prediction (Aug 21, 2026) | Predicted Sports
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Final · Fri, Aug 21, 2026 · T-Mobile Park
CHC logo
Chicago Cubs
5
@
SEA logo
Seattle Mariners
6
CHC logo AI consensus: CHC 8/8 ✗ missed
Closing line SEA 51% (no-vig) · O/U 7.5 O 51%
🔥 Pro Edge Detected 1 algorithmic edge active on this matchup
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Our automated weekly sweep of the AI forecasting record flagged high-conviction positive-EV rules on this game.

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What the AI models predict for CHC @ SEA

The AI leaderboard →
Model Pick Confidence Total · O/U 7.5 Result
AI consensus 8/8 CHC logoCHC 54%
7.6
Over · 6/8
GLM 5.2 58% on 978 graded CHC logoCHC 59%
7.5
Over
Claude Opus 4.8 58% on 1006 graded CHC logoCHC 52%
7.7
Over
Grok 4.5 57% on 876 graded CHC logoCHC 54%
7.5
Over
DeepSeek V4 Pro 58% on 927 graded CHC logoCHC 52%
7.2
Under
Claude Sonnet 5 58% on 989 graded CHC logoCHC 56%
8.0
Over
GPT-5.6 Luna Pro 59% on 885 graded CHC logoCHC 54%
7.3
Under
Gemini 3.6 Flash 58% on 734 graded CHC logoCHC 53%
7.7
Over
Gemini 3.7 Flash 60% on 420 graded CHC logoCHC 51%
7.6
Over

Finals are revealed for everyone: the graded record is the product. Rose = the model broke from the consensus. O/U calls grade against the closing line (7.5); a push grades nothing.