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Qwen3.8:27b struggles with large C to HTML porting task compared to Opus 5

A user tested the new Qwen3.8:27b model's ability to port a large C codebase to a single-file HTML with Three.js. The Qwen model, running locally on powerful hardware, took over four hours to produce a poor result, significantly longer than Anthropic's Opus 5, which completed a similar task in 21 minutes with an 'okay' outcome. The experiment suggests that local models still heavily rely on effective prompting, and even with extensive context windows and hardware, a thin prompt can lead to inefficient resource usage and suboptimal results. AI

IMPACT Highlights the current limitations of local LLMs in handling large codebases and complex tasks compared to cloud-based models.

RANK_REASON User-generated comparison of local LLM performance on a specific coding task.

Read on r/LocalLLaMA →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Qwen3.8:27b struggles with large C to HTML porting task compared to Opus 5

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Signal score
0 / 100
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Newsworthiness bucket
Tool
User-generated comparison of local LLM performance on a specific coding task.
Source corroboration
Single-source cluster
Only one publisher covered this so far. Single-source stories can still rank when the publisher is high-authority, but they lack cross-source corroboration.
Topics
model release, product
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AI-industry relevance
High
Clearly on-topic for AI-industry coverage.
Story freshness
33 days old
Aged out of breaking-news scoring windows; ranking reflects the durable signal from the full source set.

Full methodology in our editorial standards.

COVERAGE [1]

  1. r/LocalLLaMA TIER_1 English(EN) · /u/codehamr ·

    New qwen3.8:27b on a 39k line C to single-file HTML / three.js port

    <table> <tr><td> <a href="https://www.reddit.com/r/LocalLLaMA/comments/1vwde84/new_qwen3827b_on_a_39k_line_c_to_singlefile_html/"> <img alt="New qwen3.8:27b on a 39k line C to single-file HTML / three.js port" src="https://external-preview.redd.it/dTJkZWwyM2ptNWxoMZpPiNpO6-z1yRSE…