ExplainabilityTransparencySafetycs.LG
Atlas-Alignment: Making Interpretability Transferable Across Language Models
Bruno Puri, Jim Berend, Sebastian Lapuschkin, Wojciech Samek
October 31, 2025
arXiv.org
3 citations
Key Takeaways
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Interpretability research currently faces a "transparency tax" problem: Building interpretability tools for each new language model requires expensive, model-specific training and manual labeling work that doesn't keep pace with how quickly new models are being developed—creating a scalability challenge for responsible AI oversight.
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Atlas-Alignment enables knowledge reuse across models: The framework transfers interpretability insights from one well-understood model to new models by aligning their internal representations, meaning organizations can invest in thoroughly interpreting one model and then apply those insights to subsequent models with minimal additional cost.
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Lightweight alignment methods prove sufficient for transparency: The research demonstrates that simple representational alignment techniques—without requiring new labeled datasets—can enable both semantic understanding of what models are doing and the ability to steer their outputs, suggesting interpretability doesn't always require heavy computational investment.
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This approach could democratize AI transparency: By amortizing interpretability costs across multiple models, Atlas-Alignment potentially makes it more feasible for smaller organizations and researchers to understand and control language models, rather than limiting transparency tools to well-resourced labs.
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Mechanistic interpretability becomes more practical at scale: The framework addresses a key barrier to implementing mechanistic interpretability (understanding how models work internally) in real-world AI safety and governance contexts by making it economically viable to maintain transparency as model development accelerates.