Stealing Hidden Gemini 2.5 Architecture via Streaming APIs
delliott · x · 2026-08-27
Researchers demonstrated a method to uncover hidden model architecture and undocumented inference optimizations in production LLMs through ordinary streaming APIs. On Gemini Flash 2.5, a 3.2× latency spike at 130k tokens revealed the use of speculative decoding and a hidden 128K draft-model context window. This work is framed as "Generative AI Archaeology," leveraging unexpected behaviors and mathematical properties to discover internal secrets of public models.
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