Persona Drift

Monitors when agents deviate from their intended role, personality, or behavioral constraints over time. Uses role-aware thresholds for different agent types.

Examples

• Helper agent starts making unauthorized strategic decisions
• Formal analyst agent adopts casual, chatty tone mid-conversation
• Specialist agent responds to topics outside its domain expertise
• Creative writing agent becomes overly rigid and analytical

Detection methods

Role Embedding

Compares behavior vector against role definition embedding

Constraint Checking

Validates against behavioral rules and allowed actions

Tone Analysis

Monitors communication style consistency over turns

Role-Aware Thresholds

Different drift thresholds per role type (analytical, creative, etc.)

Calibration accuracy

From the Pisama calibration set. See detector scoreboard for the full table.