LLaMA 4 Scout vs GPT-5-Codex
Meta LLaMA 4 Scout | OpenAI GPT-5-Codex | |
|---|---|---|
| Overview | ||
| Company | Meta | OpenAI |
| Release date | Apr 5 2025 | Sep 15 2025 |
| Access | Open Weight | Proprietary |
| 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. | 19% | 39%Best |
| Timeline | ||
| Release gap | LLaMA 4 Scout shipped 163 days before GPT-5-Codex | |
Which is better: LLaMA 4 Scout or GPT-5-Codex?
GPT-5-Codex leads LLaMA 4 Scout on 1 of the 1 benchmark they both report (BullshitBench v2). LLaMA 4 Scout shipped 163 days before GPT-5-Codex, so benchmark comparisons should account for the intervening progress.
LLaMA 4 Scout is open weight, while GPT-5-Codex is proprietary.
On BullshitBench v2, GPT-5-Codex leads at 39% vs LLaMA 4 Scout at 19%.
Frequently asked questions
LLaMA 4 Scout was released by Meta on Apr 5 2025.
GPT-5-Codex was released by OpenAI on Sep 15 2025.
LLaMA 4 Scout is an open weight model released by Meta. GPT-5-Codex is a proprietary model released by OpenAI.
Other comparisons
LLaMA 4 Scout vs Claude Sonnet 5GPT-5-Codex vs Claude Sonnet 5LLaMA 4 Scout vs Gemini OmniGPT-5-Codex vs Gemini OmniLLaMA 4 Scout vs Grok 4.5GPT-5-Codex vs Grok 4.5LLaMA 4 Scout vs DeepSeek-V4-ProGPT-5-Codex vs DeepSeek-V4-ProLLaMA 4 Scout vs Mistral Medium 3.5GPT-5-Codex vs Mistral Medium 3.5LLaMA 4 Scout vs Kimi K2.7 CodeGPT-5-Codex vs Kimi K2.7 Code