Claude Opus 4.8 vs Dunkel Index: Graded Prediction Head-to-Head | Predicted Sports
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Claude Opus 4.8 vs Dunkel Index

AI model vs Dunkel Index ยท same games, same finals, graded in public

All time Last 30 days Last 90 days

On the 48 games both have graded (last 90 days), Claude Opus 4.8 leads 30โ€“21 on correct calls. The sharper cut is the 23 games where they took opposite sides: Claude Opus 4.8 was right 16 of 23.

MLB ยท 48 games both graded ยท Jul 21 to Jul 26, 2026

Claude Opus 4.8
30โ€“18
63% on shared games
Dunkel Index
21โ€“27
44% on shared games
When they took opposite sides
23 of 48 shared games
Claude Opus 4.8 16 ยท Dunkel Index 7

On the 25 games they agreed, the shared side went 14โ€“11.

Closing-line value
Claude Opus 4.8
+0.23 pp
beat the close 56.1% of 285 picks
Dunkel Index
-0.06 pp
beat the close 47.2% of 53 picks

More head-to-heads

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