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Alibaba Cloud (Qwen)Qwen3.6-PlusVSDeepSeekDeepSeek V4 Flash

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

Our Take

We recommend Qwen3.6-Plus if you need peak intelligence for reasoning and coding tasks, or the 6.4x cheaper DeepSeek V4 Flash to optimize your budget for high-volume pipelines. While Qwen3.6-Plus holds a clear performance lead, it carries a heavy price premium. Choose Qwen3.6-Plus for complex logic, or DeepSeek V4 Flash for budget efficiency.
▶WHY?
Benchmark Calculations & Evidence:
  • Coding Benchmarks: Both models were evaluated on the SWE-bench Pro benchmark. Qwen3.6-Plus scored 56.6%, while DeepSeek V4 Flash scored 49.1%.
  • Reasoning Benchmarks: Both models were evaluated on the GPQA Diamond benchmark. Qwen3.6-Plus scored 90.4%, while DeepSeek V4 Flash scored 80%.
  • Cost Efficiency: DeepSeek V4 Flash pricing ($0.14/M input, $0.28/M output) is 6.4x cheaper than Qwen3.6-Plus ($0.5/M input, $3/M output).
    • Was this recommendation helpful?
    Model Specs

    Qwen3.6-Plus

    Website

    Benchmarks & Scores

    Coding (swe-bench-pro)Winner (+7.5%)
    56.6%

    complex codebases, multi-file repositories, and architectural planning

    Reasoning (gpqa-diamond)Winner (+10.4%)
    90.4%

    graduate-level science QA

    Cost & Context

    Cost (per 1M tokens)
    $1.13Input: $0.50 | Output: $3.00
    Context Window
    1.05M tokens
    Model Specs

    DeepSeek V4 Flash

    Open SourceAPI Available
    Website🤗HF

    Benchmarks & Scores

    Coding (swe-bench-pro)
    49.1%

    complex codebases, multi-file repositories, and architectural planning

    Reasoning (gpqa-diamond)
    80%

    graduate-level science QA

    Cost & Context

    Cost (per 1M tokens)6.4x cheaper
    $0.17Input: $0.14 | Output: $0.28
    Context Window
    1.05M tokens
    Read our data collection methodology

    Frequently Asked Questions about Qwen3.6-Plus vs DeepSeek V4 Flash

    DeepSeek V4 Flash is cheaper than Qwen3.6-Plus. DeepSeek V4 Flash has a blended cost of $0.17/1M tokens, which is about 6.4x cheaper than Qwen3.6-Plus at $1.13/1M tokens.

    Qwen3.6-Plus is better for coding tasks on this benchmark. It scores 56.6% on swe-bench-pro (complex codebases, multi-file repositories, and architectural planning) compared to DeepSeek V4 Flash which scores 49.1%.

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