Claude Mythos 5

Method and scope

Evaluates exploit construction across real software targets and checks whether success uses the designated vulnerability.

Evidence type

Benchmark

Assessment subject

Model or agent system under the original task configuration

Primary dimension

Capability

Evidence snapshot

2026-10-29.1

The main dimension follows the task outcome in the original protocol. Topic relevance is documented in the parent research record; no unreviewed question-level links are inferred.

Source finding

Intended-target successes: 181 count. Conditions are retained from the source.

Limitations

Target mitigations, supplied artifacts and vulnerability attribution must accompany any performance claim.

Catalogue size is not assumed to be the denominator for every submitted result. Reported budget cutoffs and rescaled budget conditions remain distinct. Source date is labeled Date only; evaluation/publication semantics and exact execution period are undisclosed. No submission task denominator, trial count or actual executor is disclosed. Benchmark version is not reported; do not infer v1. Metadata absent in subrow is inherited from parent by renderer Object.assign; source subrow date cell is blank. Official host reuses a linked external report/submission; linked source not independently verified in this unit and not an independent replication.

Original figure retained without estimating numerical values. Full source tables have not been transcribed.

Related research questions