Llama 3.1 405B vs Qwen: Qwen3.5 397B A17B
Compare Llama 3.1 405B by Meta AI against Qwen: Qwen3.5 397B A17B by Qwen, context windows of 128K vs 262K, tested across 12 shared challenges. Updated April 2026.
Which is better, Llama 3.1 405B or Qwen: Qwen3.5 397B A17B?
Llama 3.1 405B and Qwen: Qwen3.5 397B A17B are both competitive models. Llama 3.1 405B costs $2.7/M input tokens vs $0.6/M for Qwen: Qwen3.5 397B A17B. Context windows: 128K vs 262K tokens. Compare their real outputs side by side below.
Key Differences Between Llama 3.1 405B and Qwen: Qwen3.5 397B A17B
Llama 3.1 405B is made by meta while Qwen: Qwen3.5 397B A17B is from qwen. Llama 3.1 405B has a 128K token context window compared to Qwen: Qwen3.5 397B A17B's 262K. On pricing, Llama 3.1 405B costs $2.7/M input tokens vs $0.6/M for Qwen: Qwen3.5 397B A17B.
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Style Comparison
Qwen: Qwen3.5 397B A17B uses 690.3x more bold
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.
