Llama 3.1 405B vs Llama 4 Scout
Compare Llama 3.1 405B and Llama 4 Scout, both from Meta AI, context windows of 128K vs 10.0M, tested across 12 shared challenges. Updated May 2026.
Which is better, Llama 3.1 405B or Llama 4 Scout?
Llama 3.1 405B and Llama 4 Scout are both competitive models. Llama 3.1 405B costs $2.7/M input tokens vs $0.25/M for Llama 4 Scout. Context windows: 128K vs 10000K tokens. Compare their real outputs side by side below.
Key Differences Between Llama 3.1 405B and Llama 4 Scout
Llama 3.1 405B is made by meta while Llama 4 Scout is from meta. Llama 3.1 405B has a 128K token context window compared to Llama 4 Scout's 10000K. On pricing, Llama 3.1 405B costs $2.7/M input tokens vs $0.25/M for Llama 4 Scout.
Per 1M tokens
Llama 4 Scout is cheaper on both — 11× input, 6.2× output
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Llama 4 Scout is 6.2x cheaper per token — worth considering if cost matters.
Style Comparison
Llama 4 Scout uses 412.3x more bold
