Claude Opus 4.5 vs LLaMA 4 Scout
Anthropic Claude Opus 4.5 | Meta LLaMA 4 Scout | |
|---|---|---|
| Overview | ||
| Company | Anthropic | Meta |
| Release date | Nov 24 2025 | Apr 5 2025 |
| 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. | 90%Best | 19% |
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. | 80.9% | — |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 87% | — |
| Timeline | ||
| Release gap | LLaMA 4 Scout shipped 233 days before Claude Opus 4.5 | |
Which is better: Claude Opus 4.5 or LLaMA 4 Scout?
Claude Opus 4.5 leads LLaMA 4 Scout on 1 of the 1 benchmark they both report (BullshitBench v2). LLaMA 4 Scout shipped 233 days before Claude Opus 4.5, so benchmark comparisons should account for the intervening progress.
Claude Opus 4.5 is proprietary, while LLaMA 4 Scout is open weight.
On BullshitBench v2, Claude Opus 4.5 leads at 90% vs LLaMA 4 Scout at 19%.
Frequently asked questions
Claude Opus 4.5 was released by Anthropic on Nov 24 2025.
LLaMA 4 Scout was released by Meta on Apr 5 2025.
Claude Opus 4.5 is a proprietary model released by Anthropic. LLaMA 4 Scout is an open weight model released by Meta.
Other comparisons
Claude Opus 4.5 vs GPT-5.6 SolLLaMA 4 Scout vs GPT-5.6 SolClaude Opus 4.5 vs Gemini OmniLLaMA 4 Scout vs Gemini OmniClaude Opus 4.5 vs Grok 4.5LLaMA 4 Scout vs Grok 4.5Claude Opus 4.5 vs DeepSeek-V4-ProLLaMA 4 Scout vs DeepSeek-V4-ProClaude Opus 4.5 vs Mistral Medium 3.5LLaMA 4 Scout vs Mistral Medium 3.5Claude Opus 4.5 vs Kimi K2.7 CodeLLaMA 4 Scout vs Kimi K2.7 Code