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Developer fine-tunes Qwen 3B model to replicate personal writing style

A developer has created a custom AI system to mimic their personal writing style, overcoming the limitations of prompt engineering. The system uses a two-model architecture: a frontier LLM like Claude Opus or Llama 70B for content generation and factual grounding, followed by a fine-tuned Qwen 2.5 3B model to rewrite the output in the developer's specific voice. This approach leverages 75,329 samples of the developer's own writing, collected over 23 years, to achieve a unique stylistic match that standard models struggle to replicate. AI

Summary written by gemini-2.5-flash-lite from 1 source. How we write summaries →

IMPACT Demonstrates a method for achieving highly personalized AI writing styles beyond prompt engineering, potentially enabling more authentic AI-generated content.

RANK_REASON The user describes a novel fine-tuning approach for a smaller model to achieve a specific stylistic output, which is a research contribution. [lever_c_demoted from research: ic=1 ai=1.0]

Read on dev.to — LLM tag →

Developer fine-tunes Qwen 3B model to replicate personal writing style

COVERAGE [1]

  1. dev.to — LLM tag TIER_1 · Nic Lydon ·

    I Trained an LLM on 75K of My Own Messages So It Would Stop Writing Like a Chatbot

    <p>Frontier LLMs are good at figuring out <em>what</em> to say. They're bad at saying it the way you would.</p> <p>I've spent months using Claude and GPT-4o to draft content for a personal publishing system. The system prompt is detailed: first person, short sentences mixed with …