GPT-3.5 Turbo vs Llama 3.1 405B
Compare GPT-3.5 Turbo by OpenAI against Llama 3.1 405B by Meta AI, context windows of 16K vs 128K, tested across 12 shared challenges. Updated April 2026.
Which is better, GPT-3.5 Turbo or Llama 3.1 405B?
GPT-3.5 Turbo and Llama 3.1 405B are both competitive models. GPT-3.5 Turbo costs $1.5/M input tokens vs $2.7/M for Llama 3.1 405B. Context windows: 16K vs 128K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-3.5 Turbo and Llama 3.1 405B
GPT-3.5 Turbo is made by openai while Llama 3.1 405B is from meta. GPT-3.5 Turbo has a 16K token context window compared to Llama 3.1 405B's 128K. On pricing, GPT-3.5 Turbo costs $1.5/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.
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.
