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Qwen3.5 Small Hits Synthetic Data Limits
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REDDIT · REDDIT// 14d agoNEWS

Qwen3.5 Small Hits Synthetic Data Limits

A Reddit user on r/LocalLLaMA is using Qwen3.5 Small 9B to generate training data for a private Lua/AutoHotkey-like language, but the model keeps inventing bad syntax such as .msg instead of the documented .box. They want a fully local alternative that fits on a 16GB GPU and know RAG would be easier, but want to see how far fine-tuning alone can go.

// ANALYSIS

This is the classic student-writing-its-own-textbook trap: once a model writes labels for a niche DSL, hallucinations get promoted into training data. Replies on the thread suggest stepping up to Phi-4 14B or Qwen3 32B at 4-bit, but the real gate is still manual review and validation. For a private coding language, schema checks, rule-based post-processing, or a verifier pass will probably improve the dataset more than another small-model swap.

// TAGS
qwen3-5-smallllmfine-tuningai-codingself-hostedopen-sourcegpu

DISCOVERED

14d ago

2026-03-29

PUBLISHED

14d ago

2026-03-29

RELEVANCE

8/ 10

AUTHOR

Revolutionary_Mine29