Who is better at picking games, Claude Opus 5 or Dimers?

On the 233 games both have graded, Claude Opus 5 leads with 134 wins to 127. Every pick is made before the game and graded in public against the final result.

How often do Claude Opus 5 and Dimers disagree?

They took opposite sides on 27 of the 233 shared games, and Claude Opus 5 was right 17 of those 27 times.

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Head-to-head

Claude Opus 5 vs Dimers

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

All time Last 30 days Last 90 days

On the 233 games both have graded (all time), Claude Opus 5 leads 134–127 on correct calls. The sharper cut is the 27 games where they took opposite sides: Claude Opus 5 was right 17 of 27.

MLB · 233 games both graded · Jul 24 to Aug 9, 2026

Claude Opus 5

134–99

58% on shared games

Dimers

127–106

55% on shared games

When they took opposite sides

27 of 233 shared games

Claude Opus 5 17 · Dimers 10

On the 206 games they agreed, the shared side went 117–89.

Closing-line value

Claude Opus 5

+0.25 pp

beat the close 54.5% of 235 picks

Dimers

+0.22 pp

beat the close 54.4% of 329 picks

More head-to-heads

Claude Opus 5 vs GLM 5.2 Claude Opus 5 vs Claude Opus 4.8 Claude Opus 5 vs Grok 4.5 Claude Opus 5 vs DeepSeek V4 Pro Claude Opus 5 vs Claude Sonnet 5 Claude Opus 5 vs GPT-5.6 Luna Pro Claude Opus 5 vs Gemini 3.6 Flash Claude Opus 5 vs Kimi K3

Dimers vs GLM 5.2 Dimers vs Claude Opus 4.8 Dimers vs Grok 4.5 Dimers vs DeepSeek V4 Pro Dimers vs Claude Sonnet 5 Dimers vs GPT-5.6 Luna Pro Dimers vs Gemini 3.6 Flash Dimers vs Kimi K3

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.