GPT-4o vs Llama 3.1 405B
Compare two of the most advanced AI models available today. Find out which one suits your needs better.
Quick Overview
GPT-4o
by OpenAI
GPT-4o ('o' for 'omni') is OpenAI's flagship multimodal model, designed for real-time, human-like interaction across text, audio, and vision.
Modalities
Best For
Real-time voice assistants, customer service bots, and applications requiring fast visual understanding.
Llama 3.1 405B
by Meta
Llama 3.1 405B is the first open-weights model to rival the top proprietary models like GPT-4o. It enables developers to run state-of-the-art AI on their own infrastructure.
Modalities
Best For
Enterprises requiring data privacy, fine-tuning for specific domains, and research.
Performance Benchmarks
MMLU (Massive Multitask Language Understanding)
GPQA (Graduate-Level Google-Proof Q&A)
HumanEval (Code Generation)
Feature Comparison
| Feature | GPT-4o | Llama 3.1 405B |
|---|---|---|
| Context Window | 128k tokens | 128k tokens |
| Real-time Voice | ||
| Interactive Code Artifacts | ||
| Open Source | ||
| API Cost (Input) | $5/1M tokens | $0/1M tokens |
| API Cost (Output) | $15/1M tokens | $0/1M tokens |
Strengths & Weaknesses
GPT-4o
Strengths
- •Extremely fast response times
- •State-of-the-art multimodal capabilities
- •Highly conversational and natural interaction
- •Free tier access is very generous
Weaknesses
- •Reasoning can sometimes be shallower than GPT-4 Turbo
- •Rate limits on the free tier can be restrictive for heavy users
Llama 3.1 405B
Strengths
- •Open weights for private deployment
- •Comparable performance to GPT-4o
- •Huge ecosystem support
- •No API dependency (if self-hosted)
Weaknesses
- •Requires massive GPU memory to run
- •Text-only in base version (no native vision/audio)
- •Setup complexity for self-hosting
What Users Are Saying
GPT-4o Users
“Users widely praise GPT-4o for its conversational speed and impressive vision capabilities, though some note it can occasionally be less detailed in reasoning tasks compared to its predecessor, GPT-4 Turbo.”
Llama 3.1 405B Users
“ The open-source community celebrates Llama 3.1 405B as a milestone for democratizing AI. It's powerful but requires significant hardware resources to run locally.”
Final Verdict
The ultimate closed vs. open comparison. GPT-4o provides a polished, managed multimodal service. Llama 3.1 405B delivers comparable intelligence with the freedom to deploy privately on your own hardware.