Claude Sonnet 5 vs Grok 4.5
AI model vs AI model · same games, same finals, graded in public
On the 383 games both have graded (all time), Claude Sonnet 5 leads 227–221 on correct calls. The sharper cut is the 24 games where they took opposite sides: Claude Sonnet 5 was right 15 of 24.
MLB · 331 games both graded · Jul 10 to Aug 6, 2026
On the 309 games they agreed, the shared side went 173–136.
UFC · 52 games both graded · Jul 11 to Aug 1, 2026
On the 50 games they agreed, the shared side went 39–11.
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.