Claude 3 Opus vs Llama 4 Maverick

Compare Claude 3 Opus by Anthropic against Llama 4 Maverick by Meta AI, context windows of 200K vs 1.0M, tested across 12 shared challenges. Updated April 2026.

Which is better, Claude 3 Opus or Llama 4 Maverick?

Claude 3 Opus and Llama 4 Maverick are both competitive models. Claude 3 Opus costs $15/M input tokens vs $1.5/M for Llama 4 Maverick. Context windows: 200K vs 1000K tokens. Compare their real outputs side by side below.

Key Differences Between Claude 3 Opus and Llama 4 Maverick

Claude 3 Opus is made by anthropic while Llama 4 Maverick is from meta. Claude 3 Opus has a 200K token context window compared to Llama 4 Maverick's 1000K. On pricing, Claude 3 Opus costs $15/M input tokens vs $1.5/M for Llama 4 Maverick.

Our Verdict
Llama 4 Maverick
Llama 4 Maverick
Claude 3 Opus
Claude 3 OpusRunner-up

No community votes yet. On paper, Llama 4 Maverick has the edge — newer, bigger context window.

Llama 4 Maverick is 30x cheaper per token — worth considering if cost matters.

Too close to call
Writing DNA

Style Comparison

Similarity
85%

Llama 4 Maverick uses 370.1x more bold

Claude 3 Opus
Llama 4 Maverick
54%Vocabulary42%
14wSentence Length24w
0.48Hedging0.76
0.0Bold3.7
3.0Lists6.3
0.00Emoji0.00
0.00Headings0.74
0.06Transitions0.11
Based on 3 + 12 text responses
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Claude 3 OpusLlama 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
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