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NPCs have configurable persistence behavior. The Auto-Trim policy, e.g. Full reset (keep system), controls how context is trimmed when the window fills, with Percent to Drop (30%), Fixed Tokens to Drop (1000), and Token Reset Padding Window (50). Persistence Mode (Override) sets per-NPC behavior.
UE Memory Persistence Settings Pro

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Persistence Modes

  • Always reset: no memory between sessions
  • Resume same NPC: wipe only when a different NPC is loaded
  • Full persistence: saves to disk, never auto-deleted
  • NPC Save Files

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NPC Save Files

See the default Save file location below.
UE Persistence NPC NPC Save File Location
When persistence is enabled, NPC state is serialized to <ProjectSaved>/GladeCore/Sessions/<PersonalityAsset>.glade-state.json (e.g. DA_DemoNPC1.glade-state.json). The file contains chat history, system prompt, and any compressed memory tiers. Writes are atomic (.tmp + rename) to avoid corruption, with a 256 KB warning threshold and 10 MB hard limit.