Omibox

GPT-4oVSLlama 3.1 405B

GPT-4o

GPT-4o

GPT-4o 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

Overall, [GPT-4o](/lab?model=openai/gpt-4o) is the current industry leader (Elo: 1287). It generally provides more accurate and faster responses than Llama 3.1 405B.
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

FeatureGPT-4oLlama 3.1 405B
ProviderOpenAIMeta
Release Date2024-052024-07
Context Window128000128000
Pricing (Input)5 / per 1M tokens0 / Open Source
Pricing (Output)15 / per 1M tokens0 / Open Source
Pros
  • Industry-leading multimodal capabilities (Audio/Vision)
  • Extremely fast inference speed compared to GPT-4 Turbo
  • Native capability to understand emotion in voice
  • Open Weights - can be run privately or fine-tuned
  • Exceptional multi-lingual performance
  • Free to use if self-hosted
Cons
  • Can be 'lazy' in coding tasks requiring complex scaffolding
  • Strict safety filters can trigger false refusals
  • Requires massive hardware to run locally (405B params)
  • No native vision capabilities (text-only)

Methodology

We compared GPT-4o 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