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Mini toolsGemma Scope 2
By Google
Model family: Gemma
Gemma Scope 2 provides a full stack of JumpReLU sparse autoencoders, cross-layer transcoders and tools for every layer and sublayer of Gemma 3 models from 270M to 27B. It enables circuit-level analysis of concepts like jailbreaks or hallucinations, supports interactive visualization, and is released openly to help the safety community understand how Gemma models represent and transform information internally.
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Gen 7
Overview
Gemma Scope 2 is Google DeepMind’s open interpretability suite of sparse autoencoders and transcoders for Gemma 3, letting researchers inspect features and circuits across all layers to study safety-relevant behavior.
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Last updated: February 3, 2026
