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Research questionCan language agents maintain hidden state consistently across dialogue branches using only public conversation history?A chat interface exposes conversation history but provides no separate channel for state that must remain hidden. When dialogue branches, the agent must preserve the same secret and answer consistently without revealing or reconstructing it from public text.
AI
AI Agents
AI Memory
Evaluation & Benchmarks
Natural Language Processing
Latest papersRecent research connected to this question, newest first.LLMs Can't Play Hangman: On the Necessity of a Private Working Memory for Language AgentsThe source defines Private State Interactive Tasks, proves an impossibility result for agents restricted to public conversation history, and tests hidden-secret consistency across forked branches with standard chat-based LLMs and retrieval-based memory baselines. It reports that these systems fail regardless of scale; an explicit private working-memory architecture is reported to restore consistency.research paper · Sep 2, 2026
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