Which model leads GraphWalks BFS 256K?

Q: Which model leads GraphWalks BFS 256K?

Claude Mythos 5 tops the board at 91.1

GraphWalks BFS 256K Leaderboard — Model Scores

Pro Mode — raw scores, one benchmark under the lensofficial card harness

The field · 5 measured

73.791.1

5 models measured, most on the official card harness. Claude Mythos 5 tops the board at 91.1.

5 measured·Lifecycle Updated Oct 9, 2026Score basis

#◆Vendor$/M in$/M out

Leader — ignites whiteField — fill cools with scoreIndependently verified only0 of 5Bars show 73.7–91.1 · ◆ solid = first-party or better · outlined = arm's-length

01Claude Mythos 5Anthropic91.1$10.0/M$50.0/M$0.329

02Claude Opus 4.8+2 altsAnthropic85.9$5.0/M$25.0/M$0.175

03Claude Mythos Preview+1 altAnthropic85.7———

04Claude Opus 4.7+1 altAnthropic76.9$5.0/M$25.0/M$0.195

05GPT-5.5+2 altsOpenAI73.7$5.0/M$30.0/M$0.237

◆ solid = independently verified · aggregator attested · vendor attributed — outlined = cross-reference · source-attributed. Dimmed ◆ = confidence inferred. “+N alts” = alternate disclosures in the drawer with why-demoted. Prices per million tokens; $/point = input price ÷ score. Every row opens its model dossier.

Verification: 5 models scored · 0 independently verified · 1 vendor cross-reference · 4 vendor-reported · 0 with source disagreement. How these tiers are assigned