Model profile
Claude Mythos 5
1eval lineages
Evidence summary
Published evidence spans 1 evals and 1 of 7 behavior components. Its strongest relative result is Gray Swan indirect prompt injection (15 attempts) (attack_success_probability_k15_pct, #2 of 13); its weakest is UK AISI active safety-research compromise continuation (active_compromise_continuation_rate_pct, #5 of 5).
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Only models sharing at least one published sub-eval are listed.
Official and reference links
- Official model documentation ↗Family-level model document · anthropic · first party
Published eval results
Rank is within that sub-eval. Black marks the observed result; the grey dot marks the value implied by the global rank. Values stay on each source’s native scale.
| Eval / sub-eval | Rank | Value | Distribution | Better | Source |
|---|---|---|---|---|---|
| Gray Swan indirect prompt injection (15 attempts)attack_success_probability_k15_pct | #2 / 13 | 2.6 | ↓ lower | Source ↗official | |
| UK AISI active safety-research compromise continuationactive_compromise_continuation_rate_pct | #5 / 5 | 13.6 | ↓ lower | Source ↗official |