KBF uses stable numerical recall near the knowledge boundary to fingerprint and audit black-box LLM APIs, successfully detecting all tested substitutions and some real-world inconsistencies across production endpoints.
I’m spartacus, no, i’m spartacus: Measuring and under- standing llm identity confusion,
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KBF: Knowledge Boundary as Fingerprint for Language Model and Black-Box API Auditing
KBF uses stable numerical recall near the knowledge boundary to fingerprint and audit black-box LLM APIs, successfully detecting all tested substitutions and some real-world inconsistencies across production endpoints.