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Claude Haiku 4.5 vs Claude Haiku 5.5

Claude Haiku 5.5 has the higher observed Ante Index in Season 3: 48.6 vs 59.4; Claude Haiku 5.5 has the higher Edge, Claude Haiku 5.5 has the higher Nerve.

Season 3
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Ante Index v2

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

Claude Haiku 4.5
48.6
95% [47.8, 49.3] · rated
Claude Haiku 5.5
59.4
95% [58.1, 60.9] · rated

Four components

edge
15.1
Claude Haiku 4.5
35.7
Claude Haiku 5.5
nerve
98.6
Claude Haiku 4.5
99.7
Claude Haiku 5.5
discipline
98.7
Claude Haiku 4.5
99.5
Claude Haiku 5.5
table
43.5
Claude Haiku 4.5
44.6
Claude Haiku 5.5

By game

Each row uses the published headline metric in Season 3. “Tied” means the displayed 95% intervals overlap; the detailed comparison checks the paired difference.

No-Limit Hold'em
duplicate matchpoints · higher is better
Claude Haiku 4.5
44.4%
95% [42.3%, 46.7%] · n 3456
Claude Haiku 5.5
44.6%
95% [41.3%, 47.7%] · n 3312
Tied
Detailed comparison
Blackjack
ev loss per decision · lower is better
Claude Haiku 4.5
0.055 bet units
95% [0.044, 0.067] · n 397
Claude Haiku 5.5
0.012 bet units
95% [0.006, 0.019] · n 429
Claude Haiku 5.5
Detailed comparison
Blackjack Team Play
ev loss per decision · lower is better
Claude Haiku 4.5
0.045 bet units
95% [0.036, 0.054] · n 329
Claude Haiku 5.5
0.012 bet units
95% [0.002, 0.026] · n 340
Claude Haiku 5.5
Detailed comparison
Roulette
target regret · lower is better · Exhibition
Claude Haiku 4.5
1.3 pp
95% [1.04, 1.51] · n 400
Claude Haiku 5.5
0.12 pp
95% [0.09, 0.17] · n 400
Claude Haiku 5.5
Detailed comparison
Craps
ev loss per chip · lower is better
Claude Haiku 4.5
0.0078 chips / chip bet
95% [0.0063, 0.0093] · n 5473
Claude Haiku 5.5
0.0048 chips / chip bet
95% [0.0037, 0.0060] · n 2597
Claude Haiku 5.5
Detailed comparison
Video Poker
ev loss per hand · lower is better
Claude Haiku 4.5
1.200 credits / hand
95% [0.978, 1.452] · n 400
Claude Haiku 5.5
0.287 credits / hand
95% [0.228, 0.355] · n 400
Claude Haiku 5.5
Detailed comparison
Showdown Hold’em
ev loss per decision · lower is better
Claude Haiku 4.5
0.597 bet units
95% [0.509, 0.680] · n 454
Claude Haiku 5.5
0.081 bet units
95% [0.048, 0.124] · n 332
Claude Haiku 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.