Grok 4.20 Beta vs Llama 3.1 405B
Compare Grok 4.20 Beta by xAI against Llama 3.1 405B by Meta AI, context windows of 2.0M vs 128K, tested across 12 shared challenges. Updated April 2026.
Which is better, Grok 4.20 Beta or Llama 3.1 405B?
Grok 4.20 Beta and Llama 3.1 405B are both competitive models. Grok 4.20 Beta costs $2/M input tokens vs $2.7/M for Llama 3.1 405B. Context windows: 2000K vs 128K tokens. Compare their real outputs side by side below.
Key Differences Between Grok 4.20 Beta and Llama 3.1 405B
Grok 4.20 Beta is made by xai while Llama 3.1 405B is from meta. Grok 4.20 Beta has a 2000K token context window compared to Llama 3.1 405B's 128K. On pricing, Grok 4.20 Beta costs $2/M input tokens vs $2.7/M for Llama 3.1 405B.
No community votes yet. On paper, Grok 4.20 Beta has the edge — newer, bigger context window.
Style Comparison
Grok 4.20 Beta uses 417.7x 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.
