LLaMA 4 Maverick vs GPT-5-Codex
Meta LLaMA 4 Maverick | 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. | 28% | 39%Best |
| Timeline | ||
| Release gap | LLaMA 4 Maverick shipped 163 days before GPT-5-Codex | |
Which is better: LLaMA 4 Maverick or GPT-5-Codex?
GPT-5-Codex leads LLaMA 4 Maverick on 1 of the 1 benchmark they both report (BullshitBench v2). LLaMA 4 Maverick shipped 163 days before GPT-5-Codex, so benchmark comparisons should account for the intervening progress.
LLaMA 4 Maverick is open weight, while GPT-5-Codex is proprietary.
On BullshitBench v2, GPT-5-Codex leads at 39% vs LLaMA 4 Maverick at 28%.
Frequently asked questions
LLaMA 4 Maverick was released by Meta on Apr 5 2025.
GPT-5-Codex was released by OpenAI on Sep 15 2025.
LLaMA 4 Maverick is an open weight model released by Meta. GPT-5-Codex is a proprietary model released by OpenAI.
Other comparisons
LLaMA 4 Maverick vs Claude Sonnet 5GPT-5-Codex vs Claude Sonnet 5LLaMA 4 Maverick vs Gemini OmniGPT-5-Codex vs Gemini OmniLLaMA 4 Maverick vs Grok 4.5GPT-5-Codex vs Grok 4.5LLaMA 4 Maverick vs DeepSeek-V4-ProGPT-5-Codex vs DeepSeek-V4-ProLLaMA 4 Maverick vs Mistral Medium 3.5GPT-5-Codex vs Mistral Medium 3.5LLaMA 4 Maverick vs Kimi K2.7 CodeGPT-5-Codex vs Kimi K2.7 Code