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AnthropicClaude Opus 5VSGoogleGemma 4 26B A4B

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

Our Take

We recommend Claude Opus 5 if you need peak intelligence and a much larger context window for full-repo analysis, or the free Gemma 4 26B A4B if you want zero API costs and total offline privacy. While Claude Opus 5 offers superior reasoning capability, Gemma 4 26B A4B runs entirely on your own local hardware. Choose Claude Opus 5 for repository-scale analysis, or Gemma 4 26B A4B 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. Claude Opus 5 scored 93.7%, while Gemma 4 26B A4B scored 82.3% (+11.4% gap).
  • Coding Performance: Evaluated on different benchmarks. Gemma 4 26B A4B scored 77.1% on LiveCodeBench (scripting single-file apps or clearly defined functions), while Claude Opus 5 scored 79.2% on SWE-bench Pro (complex codebases, multi-file repositories, and architectural planning).
  • Context Window: Claude Opus 5 supports a 1M context window, while Gemma 4 26B A4B supports 262k.
  • Hosting Model: Gemma 4 26B A4B runs locally for $0 API costs, while Claude Opus 5 is a cloud API.
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    Model Specs

    Claude Opus 5

    Website

    Benchmarks & Scores

    Coding (swe-bench-pro)
    79.2%

    complex codebases, multi-file repositories, and architectural planning

    Reasoning (gpqa-diamond)Winner (+11.4%)
    93.7%

    graduate-level science QA

    Cost & Context

    Cost (per 1M tokens)
    $10.00Input: $5.00 | Output: $25.00
    Context WindowLarger
    1.05M tokens
    Model Specs

    Gemma 4 26B A4B

    Open Source
    🤗HF

    Benchmarks & Scores

    Coding (live-code-bench)
    77.1%

    scripting single-file apps or clearly defined functions

    Reasoning (gpqa-diamond)
    82.3%

    graduate-level science QA

    Cost & Context

    Cost (per 1M tokens)
    Self HostLocal execution (zero API fees)
    Context Window
    262.14k tokens
    Read our data collection methodology

    Frequently Asked Questions about Claude Opus 5 vs Gemma 4 26B A4B

    For coding tasks, Claude Opus 5 scores 79.2% on swe-bench-pro (complex codebases, multi-file repositories, and architectural planning), while Gemma 4 26B A4B scores 77.1% on live-code-bench (scripting single-file apps or clearly defined functions).

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