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MetaLlama-3.1 405BVSMistral AIMistral Large 3

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

Our Take

We recommend Llama-3.1 405B for practical local execution on standard developer hardware, or Mistral Large 3 if you need peak reasoning and have the VRAM (or a cloud API) to host it. While Mistral Large 3 offers frontier capability, its massive parameter size makes it extremely difficult to host locally. Choose Llama-3.1 405B for standard local setups, or Mistral Large 3 for peak reasoning.
WHY?
Benchmark Calculations & Evidence:
  • Model Size: Mistral Large 3 is a massive 675B parameter model requiring heavy GPU infrastructure, while Llama-3.1 405B is a 405B parameter model.
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    Model Specs

    Llama-3.1 405B

    Open Source

    Benchmarks & Scores

    Coding (human-eval)
    89%

    basic standalone code completion and simple functions

    Reasoning (gpqa-diamond)
    50.7%

    graduate-level science QA

    Cost & Context

    Cost (per 1M tokens)
    Self HostLocal execution (zero API fees)
    Context Window
    131.07k tokens
    Model Specs

    Mistral Large 3

    Open SourceAPI Available

    Benchmarks & Scores

    Coding (live-code-bench)
    34.4%

    scripting single-file apps or clearly defined functions

    Reasoning (gpqa-diamond)Winner (+34.8%)
    85.5%

    graduate-level science QA

    Cost & Context

    Cost (per 1M tokens)
    $0.75Input: $0.50 | Output: $1.50
    Context WindowLarger
    262.14k tokens

    Frequently Asked Questions about Llama-3.1 405B vs Mistral Large 3

    For coding tasks, Llama-3.1 405B scores 89% on human-eval (basic standalone code completion and simple functions), while Mistral Large 3 scores 34.4% on live-code-bench (scripting single-file apps or clearly defined functions).

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