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GPT-4o vs Llama 3.1 405B

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OpenAI · 128k context  |  Meta · 128k context

Pricing Comparison

MetricGPT-4oLlama 3.1 405B
Input / 1M tokens$2.5$3.5
Output / 1M tokens$10$3.5
Cached input / 1M$1.25—
Context window128k128k
ProviderOpenAIMeta

Cost Calculator

💰 Llama 3.1 405B saves $675.00/month (30% cheaper)
OGPT-4o
Per request$0.007500
Daily$75.00
Monthly$2,250.00
Yearly$27,375.00
LLlama 3.1 405BCHEAPER
Per request$0.005250
Daily$52.50
Monthly$1,575.00
Yearly$19,162.50
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Choose GPT-4o when…

  • ✓ Cheaper for RAG & document retrieval (lower input cost)
  • ✓ 29% cheaper per input token
  • ✓ Supports prompt caching — save up to 90% on repeated prompts
  • ✓ Optimized for: Multimodal tasks
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Choose Llama 3.1 405B when…

  • ✓ Cheaper for generation-heavy workloads (lower output cost)
  • ✓ Optimized for: Max open-source performance

Related Comparisons

GPT-4o vs GPT-5GPT-4o vs GPT-5 MiniGPT-4o vs GPT-4.1GPT-4o vs GPT-4.1 MiniLlama 3.1 405B vs GPT-5Llama 3.1 405B vs GPT-5 Mini