Claude 3 Sonnet vs Llama 3.1 405B
Compare Claude 3 Sonnet by Anthropic against Llama 3.1 405B by Meta AI, tested across 3 shared challenges. Updated April 2026.
Which is better, Claude 3 Sonnet or Llama 3.1 405B?
Claude 3 Sonnet and Llama 3.1 405B are both competitive models. Claude 3 Sonnet costs $3/M input tokens vs $2.7/M for Llama 3.1 405B. Compare their real outputs side by side below.
Key Differences Between Claude 3 Sonnet and Llama 3.1 405B
Claude 3 Sonnet is made by anthropic while Llama 3.1 405B is from meta. On pricing, Claude 3 Sonnet costs $3/M input tokens vs $2.7/M for Llama 3.1 405B.
No community votes yet. On paper, Llama 3.1 405B has the edge — bigger model tier, newer, bigger context window.
Llama 3.1 405B is 4.8x cheaper per token — worth considering if cost matters.
Style Comparison
Llama 3.1 405B uses 2.9x more emoji
vsAsk them anything yourself
Some models write identically. You are paying for the brand.
178 models fingerprinted across 32 writing dimensions. Free research.
185x
price gap between models that write identically
178
models
12
clone pairs
32
dimensions
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
