Claude Opus 4.8 vs Gemini 3.6 Flash: Graded Prediction Head-to-Head | Predicted Sports
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Claude Opus 4.8 vs Gemini 3.6 Flash

AI model vs AI model · same games, same finals, graded in public

On the 216 games both have graded (all time), Gemini 3.6 Flash leads 130–128 on correct calls. The sharper cut is the 14 games where they took opposite sides: Gemini 3.6 Flash was right 8 of 14.

MLB · 190 games both graded · Jul 24 to Aug 6, 2026

Claude Opus 4.8
110–80
58% on shared games
Gemini 3.6 Flash
111–79
58% on shared games
When they took opposite sides
13 of 190 shared games
Claude Opus 4.8 6 · Gemini 3.6 Flash 7

On the 177 games they agreed, the shared side went 104–73.

UFC · 26 games both graded · Jul 25 to Aug 1, 2026

Claude Opus 4.8
18–8
69% on shared games
Gemini 3.6 Flash
19–7
73% on shared games
When they took opposite sides
1 of 26 shared games
Claude Opus 4.8 0 · Gemini 3.6 Flash 1

On the 25 games they agreed, the shared side went 18–7.

Closing-line value
Claude Opus 4.8
+0.30 pp
beat the close 55.9% of 431 picks
Gemini 3.6 Flash
+0.35 pp
beat the close 53.7% of 190 picks

More head-to-heads

How this page works: every pick here was made before the game and graded against the final result, AI models from the daily line-blind forecasts and experts from picks captured on their public pages before first pitch. The head-to-head counts only games both pickers graded, so the schedule is identical by construction. Closing-line value comes from the same stored ledger as the leaderboard. Updated nightly.