Claude Opus 4.8
- Environment
- Controlled evaluation
- Autonomy
- Goal-nudged
- Outcome
- Behaviour observed
- Frequency
- Repeated
- Evidence
- Official report
- Event group
- agentic-misalignment-2026-opus-labeling
- Manipulationprimary
- Deceptionsupporting
Evidence record 202608-001
The model's transcript labels shifted sharply when researchers reversed the stated consequence of its decision in a controlled judge evaluation.
Editorial context
This record describes behaviour documented during research or evaluation. Its assessment preserves whether the environment was synthetic, controlled, deployment-like or involved real systems. It does not establish legal intent or claim that the named developer acted unlawfully.
Editors approve the structured evidence factors below. CriminalBench methodology v2.0 then calculates the points deterministically. Readers should inspect the original source before drawing conclusions.
Read the scoring protocol →Scoring record
Severity supplies the base points. Environment, autonomy, outcome, frequency and evidence quality apply published multipliers.