Claude 3.7 Sonnet vs Llama 3.1 405B
Compare Claude 3.7 Sonnet by Anthropic against Llama 3.1 405B by Meta AI, context windows of 200K vs 128K, tested across 12 shared challenges. Updated May 2026.
Which is better, Claude 3.7 Sonnet or Llama 3.1 405B?
Claude 3.7 Sonnet and Llama 3.1 405B are both competitive models. Claude 3.7 Sonnet costs $3/M input tokens vs $2.7/M for Llama 3.1 405B. Context windows: 200K vs 128K tokens. Compare their real outputs side by side below.
Key Differences Between Claude 3.7 Sonnet and Llama 3.1 405B
Claude 3.7 Sonnet is made by anthropic while Llama 3.1 405B is from meta. Claude 3.7 Sonnet has a 200K token context window compared to Llama 3.1 405B's 128K. On pricing, Claude 3.7 Sonnet costs $3/M input tokens vs $2.7/M for Llama 3.1 405B.
Per 1M tokens
Llama 3.1 405B is cheaper on both — 1.1× input, 4.8× output
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Llama 3.1 405B is 4.8x cheaper per token — worth considering if cost matters.
Style Comparison
Claude 3.7 Sonnet uses 121.0x more bold
