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Qwen 3.8 autonomously codes C compiler with custom agent harness

A user detailed their experience using Qwen 3.6 and later Qwen 3.8 to autonomously code a C compiler. The project involved creating a custom harness with multiple sub-agents, including a planner, coder, and debugger, to guide the model through research and execution. Significant challenges were encountered in managing context for the inference engine and in the model's initial attempts at x86 code generation, which required iterative prompt and architecture improvements. AI

IMPACT Demonstrates advanced autonomous coding capabilities of large language models when guided by sophisticated agent frameworks.

RANK_REASON User-generated project demonstrating model capabilities, not a formal release from a frontier lab. [lever_c_demoted from research: ic=1 ai=1.0]

Read on r/LocalLLaMA →

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

Qwen 3.8 autonomously codes C compiler with custom agent harness

COVERAGE [1]

  1. r/LocalLLaMA TIER_1 English(EN) · /u/Naiw80 ·

    The journey of letting Qwen 3.6/3.8 autonomously coding a c compiler.

    <!-- SC_OFF --><div class="md"><p>Hi, </p> <p>Back in late march I begun playing around with Qwen 3.6 27b and found like everyone else that it's notoriously good at tool calls, where every model I tried before just derailed after a few turns it kept going and felt quite reliable …