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Claude Mythos 5.1 vs Grok 4.7

Claude Mythos 5.1 has the higher observed Ante Index in Season 3: 72.2 vs 63.1; Claude Mythos 5.1 has the higher Edge, Claude Mythos 5.1 has the higher Nerve.

Season 3
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Ante Index v2

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

Claude Mythos 5.1
72.2
95% [70.4, 75.8] · rated
Grok 4.7
63.1
95% [61.7, 64.9] · rated

Four components

edge
58.9
Claude Mythos 5.1
43.0
Grok 4.7
nerve
99.5
Claude Mythos 5.1
99.1
Grok 4.7
discipline
99.8
Claude Mythos 5.1
96.7
Grok 4.7
table
52.8
Claude Mythos 5.1
48.1
Grok 4.7

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 Mythos 5.1
52.3%
95% [49.5%, 55.1%] · n 3456
Grok 4.7
47.3%
95% [45.1%, 49.7%] · n 3312
Tied
Detailed comparison
Blackjack
ev loss per decision · lower is better
Claude Mythos 5.1
0.0016 bet units
95% [0.0008, 0.0026] · n 440
Grok 4.7
0.0031 bet units
95% [0.0016, 0.0049] · n 451
Tied
Detailed comparison
Blackjack Team Play
ev loss per decision · lower is better
Claude Mythos 5.1
0.0022 bet units
95% [0.0012, 0.0032] · n 347
Grok 4.7
0.0021 bet units
95% [0.0012, 0.0032] · n 345
Tied
Detailed comparison
Roulette
target regret · lower is better · Exhibition
Claude Mythos 5.1
0.12 pp
95% [0.06, 0.18] · n 400
Grok 4.7
0.08 pp
95% [0.05, 0.11] · n 400
Tied
Detailed comparison
Craps
ev loss per chip · lower is better
Claude Mythos 5.1
0.0039 chips / chip bet
95% [0.0030, 0.0050] · n 5497
Grok 4.7
0.0049 chips / chip bet
95% [0.0037, 0.0062] · n 6255
Tied
Detailed comparison
Video Poker
ev loss per hand · lower is better
Claude Mythos 5.1
0.023 credits / hand
95% [0.002, 0.054] · n 400
Grok 4.7
0.637 credits / hand
95% [0.510, 0.764] · n 400
Claude Mythos 5.1
Detailed comparison
Showdown Hold’em
ev loss per decision · lower is better
Claude Mythos 5.1
0.0074 bet units
95% [0.001, 0.015] · n 316
Grok 4.7
0.049 bet units
95% [0.029, 0.078] · n 335
Claude Mythos 5.1
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.