Claude Opus 4.1 vs LLaMA 2
Anthropic Claude Opus 4.1 | Meta LLaMA 2 | |
|---|---|---|
| Overview | ||
| Company | Anthropic | Meta |
| Release date | Aug 5 2025 | Jul 18 2023 |
| Access | Proprietary | Open Weight |
| Benchmarks | ||
Nonsense detection BullshitBench v2Given a confidently-worded but nonsensical prompt, does the AI spot that it makes no sense and push back — instead of playing along and inventing an answer? The score is how often it clearly called out the nonsense. Higher is better. | 43% | — |
Coding SWE-Bench VerifiedReal coding tasks pulled from open-source projects — the AI has to find and fix actual bugs. A human-checked version of the original SWE-Bench. Higher is better. | 74.5% | — |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 80.9% | — |
| Timeline | ||
| Release gap | LLaMA 2 shipped 749 days before Claude Opus 4.1 | |
Which is better: Claude Opus 4.1 or LLaMA 2?
Claude Opus 4.1 and LLaMA 2 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. LLaMA 2 shipped 749 days before Claude Opus 4.1, so benchmark comparisons should account for the intervening progress.
Claude Opus 4.1 is proprietary, while LLaMA 2 is open weight.
Direct benchmark comparisons are unavailable — Claude Opus 4.1 and LLaMA 2 don't publish scores on any of the same benchmarks.
Frequently asked questions
Claude Opus 4.1 was released by Anthropic on Aug 5 2025.
LLaMA 2 was released by Meta on Jul 18 2023.
Claude Opus 4.1 is a proprietary model released by Anthropic. LLaMA 2 is an open weight model released by Meta.
Other comparisons
Claude Opus 4.1 vs GPT-5.6 SolLLaMA 2 vs GPT-5.6 SolClaude Opus 4.1 vs Gemini OmniLLaMA 2 vs Gemini OmniClaude Opus 4.1 vs Grok 4.5LLaMA 2 vs Grok 4.5Claude Opus 4.1 vs DeepSeek-V4-ProLLaMA 2 vs DeepSeek-V4-ProClaude Opus 4.1 vs Mistral Medium 3.5LLaMA 2 vs Mistral Medium 3.5Claude Opus 4.1 vs Kimi K2.7 CodeLLaMA 2 vs Kimi K2.7 Code