LLaMA 3.1 vs GPT-5.1-Codex-Max
Meta LLaMA 3.1 | OpenAI GPT-5.1-Codex-Max | |
|---|---|---|
| Overview | ||
| Company | Meta | OpenAI |
| Release date | Jul 23 2024 | Nov 19 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. | 14% | — |
| Timeline | ||
| Release gap | LLaMA 3.1 shipped 484 days before GPT-5.1-Codex-Max | |
Which is better: LLaMA 3.1 or GPT-5.1-Codex-Max?
LLaMA 3.1 and GPT-5.1-Codex-Max don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. LLaMA 3.1 shipped 484 days before GPT-5.1-Codex-Max, so benchmark comparisons should account for the intervening progress.
LLaMA 3.1 is open weight, while GPT-5.1-Codex-Max is proprietary.
Direct benchmark comparisons are unavailable — LLaMA 3.1 and GPT-5.1-Codex-Max don't publish scores on any of the same benchmarks.
Frequently asked questions
LLaMA 3.1 was released by Meta on Jul 23 2024.
GPT-5.1-Codex-Max was released by OpenAI on Nov 19 2025.
LLaMA 3.1 is an open weight model released by Meta. GPT-5.1-Codex-Max is a proprietary model released by OpenAI.
Other comparisons
LLaMA 3.1 vs Claude Sonnet 5GPT-5.1-Codex-Max vs Claude Sonnet 5LLaMA 3.1 vs Gemini OmniGPT-5.1-Codex-Max vs Gemini OmniLLaMA 3.1 vs Grok 4.5GPT-5.1-Codex-Max vs Grok 4.5LLaMA 3.1 vs DeepSeek-V4-ProGPT-5.1-Codex-Max vs DeepSeek-V4-ProLLaMA 3.1 vs Mistral Medium 3.5GPT-5.1-Codex-Max vs Mistral Medium 3.5LLaMA 3.1 vs Kimi K2.7 CodeGPT-5.1-Codex-Max vs Kimi K2.7 Code