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Alibaba Cloud (Qwen)Qwen3.6-27BVSOpenAIGPT-5.4 nano

Analysis by:the whichllmmodel Editorial Team|Updated: June 2026

Our Take

We recommend Qwen3.6-27B over GPT-5.4 nano because it holds a clear reasoning lead. Choose Qwen3.6-27B for offline data control and complex codebases, multi-file repositories, and architectural planning, or GPT-5.4 nano only if you prefer using a cloud-hosted API setup for complex codebases, multi-file repositories, and architectural planning.
WHY?
Benchmark Calculations & Evidence:
  • Reasoning Accuracy: Both models were evaluated on the GPQA Diamond benchmark. Qwen3.6-27B scored 87.8%, while GPT-5.4 nano scored 82.8% (+5.0% gap).
  • Coding Performance: Both models were evaluated on the SWE-bench Pro benchmark. GPT-5.4 nano scored 52.4%, while Qwen3.6-27B scored 53.5% (+-1.1% gap).
  • Hosting Model: Qwen3.6-27B runs locally for $0 API costs, while GPT-5.4 nano is hosted via a cloud-hosted API setup.
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    Model Specs

    Qwen3.6-27B

    Open Source

    Benchmarks & Scores

    Coding (swe-bench-pro)Winner (+1.1%)
    53.5%

    complex codebases, multi-file repositories, and architectural planning

    Reasoning (gpqa-diamond)Winner (+5.0%)
    87.8%

    graduate-level science QA

    Cost & Context

    Cost (per 1M tokens)
    Self HostLocal execution (zero API fees)
    Context Window
    262.14k tokens
    Model Specs

    GPT-5.4 nano

    Benchmarks & Scores

    Coding (swe-bench-pro)
    52.4%

    complex codebases, multi-file repositories, and architectural planning

    Reasoning (gpqa-diamond)
    82.8%

    graduate-level science QA

    Cost & Context

    Cost (per 1M tokens)
    $0.46Input: $0.20 | Output: $1.25
    Context WindowLarger
    400k tokens

    Frequently Asked Questions about Qwen3.6-27B vs GPT-5.4 nano

    Qwen3.6-27B is better for coding tasks on this benchmark. It scores 53.5% on swe-bench-pro (complex codebases, multi-file repositories, and architectural planning) compared to GPT-5.4 nano which scores 52.4%.

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