Claude Opus 4.8 vs Claude Sonnet 5
AI model vs AI model · same games, same finals, graded in public
On the 599 games both have graded (all time), they are dead even at 356 correct calls each. The sharper cut is the 56 games where they took opposite sides: they split them exactly, 28 apiece.
MLB · 535 games both graded · Jul 1 to Aug 13, 2026
On the 485 games they agreed, the shared side went 280–205.
UFC · 64 games both graded · Jul 11 to Aug 8, 2026
On the 58 games they agreed, the shared side went 48–10.
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.