Per-Layer Embeddings: Technical Explainer of How Gemma 4's Small Models Achieve Outsized Performance

r/LocalLLaMA·medium signal

A r/LocalLLaMA technical explainer (448 upvotes, 52 comments) breaks down the per-layer embedding architecture that enables Gemma 4's 26B MoE variant (3.8B active parameters) to score 82.6% MMLU Pro and 88.3% AIME 2026. The post follows the author's popular TurboQuant explanation series and provides the clearest community breakdown of why Gemma 4 achieves near-frontier performance at a fraction of the compute cost.