The Curious Case of the bos_token
Mechanistically analyzes bos_token massive activations and attention sinks across GPT2, Gemma2 and Llama 3.2, then trains GPT2 with a bos_override that decouples the sink from MLP weights.
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Among Us: A Sandbox for Agentic Deception
Introduces Among Us as a sandbox where LLM agents deceive naturally, measures deceptive capability with Deception ELO, and shows linear probes and SAEs detect out-of-distribution deception well.