We trained a personal voice DoRA on Qwen3-8B for $1.50 — beat stock model 100% in blind A/B

TL;DR. Trained a DoRA adapter on Qwen3-8B using 6128 personal Telegram messages. Cost: $1.50 on a single Vast.ai RTX 3090. In blind head-to-head A/B, the DoRA-tuned model beat stock Qwen3-8B 100% of the time. Zero catastrophic forgetting on 50 general-knowledge tasks. One prompt where the model actually beat the real human at sounding like themselves. Full long-form write-up lives on the canonical URL: aiconic.company/en/journal/dora-personal-voice. This post is the dev.to-flavored version with...