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Llama 3.1 405B vs Llama 4 Scout: Pricing, Benchmarks & Verdict (2026)

Pricing verified Apr 8, 2026

⚡ Quick Answer

Compare Llama 3.1 405B and Llama 4 Scout across pricing, benchmarks, and capabilities.

Updated: April 8, 2026 · ✓ Pricing verified

Side-by-Side Comparison

FeatureLlama 3.1 405BLlama 4 Scout
ProviderMetaMeta
Input Price / 1M tokens$3.00$0.080
Output Price / 1M tokens$3.00$0.300
Context Window
128K
10.48576M
Max Output Tokens
4,096
32,768
Arena ELO
1,240
1,250
Coding ELO
1,200
1,230
TTFT (ms)
150
200
Tokens/sec
100
110
MultimodalNoYes
JSON ModeYesYes
Function CallingYesYes
VisionNoYes
When to Use Llama 3.1 405B

Llama 3.1 405B excels at general-purpose, reasoning, long-context tasks.

Strengths:

  • Largest open model
  • Excellent reasoning
  • High quality outputs

Best for:

general-purposereasoninglong-context
When to Use Llama 4 Scout

Llama 4 Scout excels at long-context, chatbots, cost-sensitive, open-source tasks.

Strengths:

  • 10M token context window
  • Very affordable
  • Open-source and self-hostable
  • Good general performance

Best for:

long-contextchatbotscost-sensitiveopen-source

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