Omibox

Gemini 1.5 ProVSLlama 3.1 405B

Gemini 1.5 Pro

Gemini 1.5 Pro

Gemini 1.5 Pro AI Model

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VS
Llama 3.1 405B

Llama 3.1 405B

Llama 3.1 405B AI Model

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casual Verdict

These two are neck-and-neck industry leaders. [Gemini](/lab?model=google/gemini-flash-1.5) 1.5 Pro (Elo 1261) and Llama 3.1 405B (Elo 1266) are practically indistinguishable in daily tasks.
Data Verified from Authority Sources

Benchmarks including **LMSYS Chatbot Arena Elo** and **HumanEval Pass@1** are sourced from public leaderboards as of **2025/2026**. These metrics are indicative and may change as models are updated by providers.

LMSYS Leaderboard HumanEval Benchmark

Scores based on normalized benchmarks (0-100 scale)

Feature Comparison

FeatureGemini 1.5 ProLlama 3.1 405B
ProviderGoogleMeta
Release Date2024-042024-07
Context Window2000000128000
Pricing (Input)3.5 / per 1M tokens0 / Open Source
Pricing (Output)10.5 / per 1M tokens0 / Open Source
Pros
  • Unmatched 2 Million token context window
  • Deep integration with Google Workspace ecosystem
  • Excellent at retrieving needle-in-a-haystack data
  • Open Weights - can be run privately or fine-tuned
  • Exceptional multi-lingual performance
  • Free to use if self-hosted
Cons
  • Can suffer from hallucinations in short-context logic
  • More aggressive safety filters than competitors
  • Requires massive hardware to run locally (405B params)
  • No native vision capabilities (text-only)

Methodology

We compared Gemini 1.5 Pro and Llama 3.1 405B based on real-world usage tests, official technical benchmarks, and community feedback. Our scoring system evaluates speed, reasoning capabilities (MMLU benchmarks), and coding proficiency.

Last updated: 1/17/2026