GPT-5.5 vs Gemini 3.5 Flash: Graded Prediction Head-to-Head | Predicted Sports
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GPT-5.5 vs Gemini 3.5 Flash

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

All time Last 30 days Last 90 days

On the 173 games both have graded (last 90 days), GPT-5.5 leads 108–102 on correct calls. The sharper cut is the 18 games where they took opposite sides: GPT-5.5 was right 12 of 18.

MLB · 148 games both graded · Jun 30 to Jul 11, 2026

GPT-5.5
87–61
59% on shared games
Gemini 3.5 Flash
80–68
54% on shared games
When they took opposite sides
17 of 148 shared games
GPT-5.5 12 · Gemini 3.5 Flash 5

On the 131 games they agreed, the shared side went 75–56.

UFC · 25 games both graded · Jul 11 to Jul 18, 2026

GPT-5.5
21–4
84% on shared games
Gemini 3.5 Flash
22–3
88% on shared games
When they took opposite sides
1 of 25 shared games
GPT-5.5 0 · Gemini 3.5 Flash 1

On the 24 games they agreed, the shared side went 21–3.

Closing-line value
GPT-5.5
+0.05 pp
beat the close 44.3% of 115 picks
Gemini 3.5 Flash
+0.16 pp
beat the close 52.6% of 285 picks

More head-to-heads

GPT-5.5 vs GLM 5.2 GPT-5.5 vs Claude Opus 4.8 GPT-5.5 vs Grok 4.5 GPT-5.5 vs DeepSeek V4 Pro GPT-5.5 vs Claude Sonnet 5 GPT-5.5 vs GPT-5.6 Sol Pro GPT-5.5 vs GPT-5.6 Luna Pro GPT-5.5 vs Gemini 3.5 Flash Lite
Gemini 3.5 Flash vs GLM 5.2 Gemini 3.5 Flash vs Claude Opus 4.8 Gemini 3.5 Flash vs Grok 4.5 Gemini 3.5 Flash vs DeepSeek V4 Pro Gemini 3.5 Flash vs Claude Sonnet 5 Gemini 3.5 Flash vs GPT-5.6 Sol Pro Gemini 3.5 Flash vs GPT-5.6 Luna Pro Gemini 3.5 Flash vs Gemini 3.5 Flash Lite

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.