GPT-4.5 vs Llama 3.1 70B (Instruct)

Compare GPT-4.5 by OpenAI against Llama 3.1 70B (Instruct) by Meta AI, context windows of 128K vs 128K, tested across 11 shared challenges. Updated March 2026.

Which is better, GPT-4.5 or Llama 3.1 70B (Instruct)?

GPT-4.5 and Llama 3.1 70B (Instruct) are both competitive models. GPT-4.5 costs $75/M input tokens vs $0.59/M for Llama 3.1 70B (Instruct). Context windows: 128K vs 128K tokens. Compare their real outputs side by side below.

Key Differences Between GPT-4.5 and Llama 3.1 70B (Instruct)

GPT-4.5 is made by openai while Llama 3.1 70B (Instruct) is from meta. GPT-4.5 has a 128K token context window compared to Llama 3.1 70B (Instruct)'s 128K. On pricing, GPT-4.5 costs $75/M input tokens vs $0.59/M for Llama 3.1 70B (Instruct).

Our Verdict
GPT-4.5
GPT-4.5
Llama 3.1 70B (Instruct)
Llama 3.1 70B (Instruct)Runner-up

No community votes yet. On paper, GPT-4.5 has the edge — bigger model tier, newer.

Llama 3.1 70B (Instruct) is 190x cheaper per token — worth considering if cost matters.

Too close to call
vs

Ask them anything yourself

GPT-4.5Llama 3.1 70B (Instruct)
FAQ