Llama 3.1 405B vs GPT-4.1 Mini

Compare Llama 3.1 405B by Meta AI against GPT-4.1 Mini by OpenAI, context windows of 128K vs 1.0M, tested across 7 shared challenges. Updated March 2026.

Which is better, Llama 3.1 405B or GPT-4.1 Mini?

Llama 3.1 405B and GPT-4.1 Mini are both competitive models. Llama 3.1 405B costs $2.7/M input tokens vs $0.4/M for GPT-4.1 Mini. Context windows: 128K vs 1048K tokens. Compare their real outputs side by side below.

Key Differences Between Llama 3.1 405B and GPT-4.1 Mini

Llama 3.1 405B is made by meta while GPT-4.1 Mini is from openai. Llama 3.1 405B has a 128K token context window compared to GPT-4.1 Mini's 1048K. On pricing, Llama 3.1 405B costs $2.7/M input tokens vs $0.4/M for GPT-4.1 Mini.

Our Verdict
Llama 3.1 405B
Llama 3.1 405B
GPT-4.1 Mini
GPT-4.1 Mini

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

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