GPT-5 Pro vs Llama 4 Maverick

Compare GPT-5 Pro by OpenAI against Llama 4 Maverick by Meta AI, context windows of 400K vs 1.0M, tested across 41 shared challenges. Updated April 2026.

Which is better, GPT-5 Pro or Llama 4 Maverick?

GPT-5 Pro and Llama 4 Maverick are both competitive models. GPT-5 Pro costs $15/M input tokens vs $1.5/M for Llama 4 Maverick. Context windows: 400K vs 1000K tokens. Compare their real outputs side by side below.

Key Differences Between GPT-5 Pro and Llama 4 Maverick

GPT-5 Pro is made by openai while Llama 4 Maverick is from meta. GPT-5 Pro has a 400K token context window compared to Llama 4 Maverick's 1000K. On pricing, GPT-5 Pro costs $15/M input tokens vs $1.5/M for Llama 4 Maverick.

Our Verdict
GPT-5 Pro
GPT-5 Pro
Llama 4 Maverick
Llama 4 Maverick

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

Llama 4 Maverick is 48x cheaper per token — worth considering if cost matters.

Too close to call
Writing DNA

Style Comparison

Similarity
92%

Llama 4 Maverick uses 370.1x more bold

GPT-5 Pro
Llama 4 Maverick
65%Vocabulary42%
15wSentence Length24w
0.32Hedging0.76
0.0Bold3.7
2.9Lists6.3
0.00Emoji0.00
0.00Headings0.74
0.01Transitions0.11
Based on 11 + 12 text responses
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GPT-5 ProLlama 4 Maverick

279 AI models invented the same fake scientist.

We read every word. 250 models. 2.14 million words. This is what we found.

AI Hallucination Index 2026
Free preview13 of 58 slides
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