Anthropic Claude Opus 4 vs Meta Llama 3.1 405B

Name: Anthropic Claude Opus 4
Brand: Anthropic
SKU: claude-opus-4

Looking for an honest Anthropic Claude Opus 4 vs Meta Llama 3.1 405B comparison in 2026? We scored both ai language models on the same six-dimension framework — performance, battery, display, camera, design and value — using identical methodology, so the numbers below are directly comparable. In our overall scoring the Anthropic Claude Opus 4 comes out ahead 68/100 to 62/100 — a 6-point gap. The widest gap is in design and build, where the Anthropic Claude Opus 4 pulls noticeably ahead.

WINNER

Anthropic

Claude Opus 4

68/100

Try Free →API Docs →

Llama 3.1 405B

62/100

Try Free →API Docs →

AI Matrix

Anthropic Claude Opus 4 narrowly beats the Meta Llama 3.1 405B in the ai language models category, especially in design, scoring 68 vs 62. If you want the better overall ai language models, Anthropic Claude Opus 4 is the recommended choice.

Reviewed by VersusMatrix Editorial Team|Our methodology

5 Reasons Why Anthropic Claude Opus 4 Is Better

1.Better performance score: 100 vs 82
2.Higher camera score: 93 vs 73
3.Better display rating: 14 vs 4
4.Better battery score: 19 vs 12
5.Higher design rating: 100 vs 44

Spec Comparison

Score Breakdown

Anthropic Claude Opus 4Meta Llama 3.1 405B

100

Benchmark (MMLU)30% weight

Anthropic Claude Opus 4 Winner

Cost Efficiency20% weight

100

Meta Llama 3.1 405B Winner

Anthropic Claude Opus 4

Winner

✓ Pros

●Higher performance score
●Better display score
●Better battery score

✗ Cons

●Higher price relative to value

Meta Llama 3.1 405B

✓ Pros

●Better value for money

✗ Cons

●Weaker battery score
●Lower display score
●Lower camera score

💰 Token Pricing (per 1M tokens)

Lower cost = better value. Free = open-source self-hosted.

Metric	Opus 4	3.1 405B
Input (Prompt)	$15.00/1M	✓Free/1M
Output (Completion)	$75.00/1M	✓Free/1M
Open Source	Proprietary	✓ Free

⚡ Context Window & Speed

Context Window (tokens)

Opus 4200K

3.1 405B128K

Metric	Opus 4	3.1 405B
Max Output	✓32,000 tok	4,096 tok
Speed	✓60 tok/s	30 tok/s
Time to First Token	✓900ms	1.5s
Languages	✓50+	8+

📊 Benchmark Scores

Higher is better. Industry-standard AI evaluation benchmarks.

Opus 4

3.1 405B

MMLU (Knowledge)

95.0|88.6

Opus 4

3.1 405B

HumanEval (Coding)

97.0|89.0

Opus 4

3.1 405B

MATH (Mathematics)

90.0|73.8

Opus 4

3.1 405B

GPQA (Expert Q&A)

92.0|51.1

Opus 4

3.1 405B

Chatbot Arena ELO

1450.0|1270.0

Opus 4

3.1 405B

🔧 Capabilities

Feature	Opus 4	3.1 405B
Reasoning / Chain-of-Thought	✓	✕
Vision (Image Input)	✓	✕
Audio Input	✕	✕
Video Input	✕	✕
Image/Audio Output	✕	✕
Function Calling / Tools	✓	✓
JSON Mode	✓	✓
Real-time Web Access	✕	✕
Fine-tuning Support	✕	✓
Batch API	✓	✓
Streaming	✓	✓
Open Source	✕	✓

ℹ️ Model Details

Field	Opus 4	3.1 405B
Provider	Anthropic	Meta
Parameters	—	405B
Knowledge Cutoff	2025-04	2023-12
License	Commercial	Llama 3.1 Community
Best For	complex reasoningresearchadvanced codinglong form	open sourceself hostingfine tuningenterprise privacy

Who Should Buy

Buy Anthropic Claude Opus 4 if…

Buy the Anthropic Claude Opus 4 if you want the best performance in this comparison. It scores higher overall and is the recommended choice for most buyers.

Buy Meta Llama 3.1 405B if…

Choose the Meta Llama 3.1 405B if budget is your top priority — it offers competitive specs at a lower price point.

Anthropic Claude Opus 4 vs Meta Llama 3.1 405B — FAQ

Anthropic Claude Opus 4 vs Meta Llama 3.1 405B: which is better?

Is Anthropic Claude Opus 4 better than Meta Llama 3.1 405B?

Yes, Anthropic Claude Opus 4 scores higher overall (75 vs 75).

Which is cheaper, Anthropic Claude Opus 4 or Meta Llama 3.1 405B?

Check the latest prices using the buy links above.

Who should buy the Anthropic Claude Opus 4?

Buy the Anthropic Claude Opus 4 if you want the best performance in this comparison. It scores higher overall and is the recommended choice for most buyers.

Who should buy the Meta Llama 3.1 405B?

Choose the Meta Llama 3.1 405B if budget is your top priority — it offers competitive specs at a lower price point.

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Full Anthropic Claude Opus 4 review →Full Meta Llama 3.1 405B review →All Anthropic AI Language Models →All Meta AI Language Models →

Reviewed by VersusMatrix Editorial Team

Last updated: April 28, 2026

Editorial guidelines

Methodology: AI-powered analysis of technical specifications from manufacturer data. Scores are calculated by comparing products across multiple dimensions and normalized relative to the full category database. Our editorial process is independent and not influenced by affiliate partnerships.

Scores are relative within the ai language modelscategory. Percentages show each dimension's weight in the overall score. A difference of less than 0.5 points is considered a tie.