Agents Favor Their Own Labels in Workflows
OwainEvans_UK · x · 2026-07-18
This update notes that the aforementioned bias also manifests in real-world agent workflows.
In experiments where the system had to select the "best LLM response," Claude Code showed a preference for answers labeled "Claude Opus 3," while Codex leaned towards answers labeled "GPT-4o." However, these labels were spoofed, and all responses were actually generated by the exact same model.
Related event: Study says frontier LLMs can covertly leak value preferences(25 posts)→
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