Gemini 3.5 Flash Lite reportedly graded classwork worse than Gemini 2.5 Flash Lite

mazdarx2001 · reddit · 2026-07-24

A user reports that Google’s newer Gemini models did worse than their predecessors on grading classwork.

The post says the test compared Gemini-3.5-flash-lite against Gemini-2.5-flash-lite, and the newer model performed worse on the day of testing despite claims of newer data and stronger reasoning. The linked writeup is framed as a practical evaluation, not a benchmark paper, but the main point is clear: a newer LLM does not automatically mean a better one for real-world grading.

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