PaperScope
LIVE · 2026-10-01 05:40 UTC

Where the Evidence Lives: Auditing AI Companions' Self-Descriptions

Seiya Ikeda, Shin-nosuke Ishikawa

Latestcs.CLcs.LGcs.AIcs.CV
arXiv ID
2609.38753 v1
Category
Submitted
2026-09-30

Abstract

Companion agents describe themselves: they remember, they understand their users, the relationship has changed them. We argue that such accounts, and the experience ratings that seem to confirm them, are checkable by users only where the evidence is theirs: in the agent's behavior, or in themselves. Where the evidence lives in the machinery, fluent self-description and moderately positive ratings do not establish that the mechanisms behind them ran. We demonstrate an audit procedure that sets an agent's self-description against its users' judgements and its implementation records, reporting each claim as supported, contradicted, or unresolved, and apply it to Lita, a proactive companion we built and deployed for a month with nine colleagues. Participants endorsed stylistic claims, withheld endorsement from relational ones, and rated memory at or above midpoint, while two of three memory layers had never executed their accumulation step. Memory-bearing agents should report what their self-descriptions cannot establish.

Comment: 17 pages, 8 figures, 9 tables. Ancillary files contain the LLM judge prompt (Japanese original and English translation) and the probe statements

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