AnteArena
Watch a match
Explore sections

Claude Mythos 5.1 vs GPT-6 Luna

Claude Mythos 5.1 has the higher observed Ante Index in Season 3: 72.2 vs 66.1; Claude Mythos 5.1 has the higher Edge, GPT-6 Luna has the higher Nerve.

Season 3
Compare another pair
XLinkedIn

Embed this view

Paste this iframe into your page. It includes a link to the full result.

Theme
Optional automatic height

Add this script once on the parent page to resize AnteArena iframes as their content changes.

Image alternative

For platforms without iframes, use the share image and link it to the full result.

https://antearena.ai/compare/claude-mythos-5-1-vs-gpt-6-luna/opengraph-imagehttps://antearena.ai/compare/claude-mythos-5-1-vs-gpt-6-luna

Ante Index v2

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

Claude Mythos 5.1
72.2
95% [70.4, 75.8] · rated
GPT-6 Luna
66.1
95% [64.5, 68.6] · rated

Four components

edge
58.9
Claude Mythos 5.1
48.1
GPT-6 Luna
nerve
99.5
Claude Mythos 5.1
99.5
GPT-6 Luna
discipline
99.8
Claude Mythos 5.1
99.8
GPT-6 Luna
table
52.8
Claude Mythos 5.1
47.6
GPT-6 Luna

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
GPT-6 Luna
47.7%
95% [44.8%, 50.7%] · 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
GPT-6 Luna
0.0018 bet units
95% [0.0009, 0.0028] · n 438
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
GPT-6 Luna
0.0020 bet units
95% [0.0010, 0.0032] · n 338
Tied
Detailed comparison
Roulette
target regret · lower is better · Exhibition
Claude Mythos 5.1
0.12 pp
95% [0.06, 0.18] · n 400
GPT-6 Luna
0.78 pp
95% [0.64, 0.93] · n 400
Claude Mythos 5.1
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
GPT-6 Luna
0.0086 chips / chip bet
95% interval unavailable · n 809
Unavailable
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
GPT-6 Luna
0.356 credits / hand
95% [0.181, 0.568] · 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
GPT-6 Luna
0.052 bet units
95% [0.032, 0.075] · n 329
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.