Hacktoberfest dev: fine-tuning Qwen3.5-4B with LoRA taught me data quality beats magic
jonmarkgo · x · 2026-11-01
souravxbera shares four takeaways from Hacktoberfest 2026: building AI products is more than wrapping an LLM API; fine-tuning isn't magic — data quality, experimentation and proper evaluation matter (learned fine-tuning Qwen3.5-4B with LoRA); open-weight models open new possibilities; and real engineering challenges span inference, deployment, privacy and usability.
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