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GoogleGemini 3.1 ProVSGoogleGemma 4 31B

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

Our Take

We recommend Gemini 3.1 Pro if you need peak intelligence and a much larger context window for full-repo analysis, or the free Gemma 4 31B if you want zero API costs and total offline privacy. While Gemini 3.1 Pro offers superior reasoning capability, Gemma 4 31B runs entirely on your own local hardware. Choose Gemini 3.1 Pro for repository-scale analysis, or Gemma 4 31B for zero-cost offline privacy and scripting single-file apps or clearly defined functions.
WHY?
Benchmark Calculations & Evidence:
  • Reasoning Accuracy: Both models were evaluated on the GPQA Diamond benchmark. Gemini 3.1 Pro scored 94.3%, while Gemma 4 31B scored 84.3% (+10.0% gap).
  • Coding Performance: Evaluated on different benchmarks. Gemma 4 31B scored 80% on LiveCodeBench (scripting single-file apps or clearly defined functions), while Gemini 3.1 Pro scored 54.2% on SWE-bench Pro (complex codebases, multi-file repositories, and architectural planning).
  • Context Window: Gemini 3.1 Pro supports a 1M context window, while Gemma 4 31B supports 262k.
  • Hosting Model: Gemma 4 31B runs locally for $0 API costs, while Gemini 3.1 Pro is a cloud API.
  • Was this recommendation helpful?
    Model Specs

    Gemini 3.1 Pro

    Benchmarks & Scores

    Coding (swe-bench-pro)
    54.2%

    complex codebases, multi-file repositories, and architectural planning

    Reasoning (gpqa-diamond)Winner (+10.0%)
    94.3%

    graduate-level science QA

    Cost & Context

    Cost (per 1M tokens)
    $4.50Input: $2.00 | Output: $12.00
    Context WindowLarger
    1.05M tokens
    Model Specs

    Gemma 4 31B

    Open Source

    Benchmarks & Scores

    Coding (live-code-bench)
    80%

    scripting single-file apps or clearly defined functions

    Reasoning (gpqa-diamond)
    84.3%

    graduate-level science QA

    Cost & Context

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

    Frequently Asked Questions about Gemini 3.1 Pro vs Gemma 4 31B

    For coding tasks, Gemini 3.1 Pro scores 54.2% on swe-bench-pro (complex codebases, multi-file repositories, and architectural planning), while Gemma 4 31B scores 80% on live-code-bench (scripting single-file apps or clearly defined functions).

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