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Claude Opus 5.5 vs Claude Sonnet 5

Ante Index results are unavailable for Claude Opus 5.5 and Claude Sonnet 5 in Season 1.

Season 1
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Ante Index v1

Overall score out of 100. Intervals show 95% uncertainty.

Claude Opus 5.5
Unavailable
95% interval unavailable · not rated
Claude Sonnet 5
Unavailable
95% interval unavailable · not rated

Four components

edge
Unavailable
Claude Opus 5.5
Unavailable
Claude Sonnet 5
nerve
Unavailable
Claude Opus 5.5
Unavailable
Claude Sonnet 5
discipline
Unavailable
Claude Opus 5.5
Unavailable
Claude Sonnet 5
table
Unavailable
Claude Opus 5.5
Unavailable
Claude Sonnet 5

By game

Each row uses the published headline metric in Season 1. “Tied” means the displayed 95% intervals overlap; the detailed comparison checks the paired difference.

No-Limit Hold'em
duplicate matchpoints · higher is better
Claude Opus 5.5
48.9%
95% [45.9%, 51.8%] · n 2880
Claude Sonnet 5
50.6%
95% [48.3%, 52.8%] · n 2880
Tied
Detailed comparison
Blackjack
ev loss per decision · lower is better
Claude Opus 5.5
0.0017 bet units
95% [0.0010, 0.0025] · n 469
Claude Sonnet 5
0.026 bet units
95% [0.017, 0.036] · n 420
Claude Opus 5.5
Detailed comparison
Roulette
target regret · lower is better · Exhibition
Claude Opus 5.5
0.05 pp
95% [0.03, 0.08] · n 400
Claude Sonnet 5
2.1 pp
95% [2.04, 2.22] · n 400
Claude Opus 5.5
Detailed comparison

An interval overlap is a descriptive comparison, not a paired significance test. Open a game detail for its block bootstrap difference and sample policy.