# Sophia Trains Faster But Gets Nowhere Farther: What Stanford FLeX Code Research Found

- slug: sophia-trains-faster-but-gets-nowhere-farther-what-stanford-flex-code-research-found
- date: 2026-04-09
- category: Artificial Intelligence

Sophia optimizer trains code models 30% faster than AdamW — but new Stanford research shows that speed advantage comes at no accuracy cost, which is either good news or a red flag depending on what you thought the speedup meant.

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