Compare AI models
| Specifications | ||
ParametersThe learned values that shape how a model responds. B means billion and T means trillion. For mixture-of-experts models, the total count is larger than the number active for each token. Parameter count alone does not measure quality. | 7B/13B/34B | — |
Context windowHow much information the model can work with in one request, measured in tokens — pieces of words or other data. This includes your question, attachments, conversation and reply. Limits can vary by model variant and provider. | 16k | 400k |
| These models have no shared benchmark scores. | ||
BullshitBench v2Nonsense detection — Given 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. | — | 32% |
HumanEvalFunction synthesis — 164 small Python problems: the AI is given a function's description and has to write the working function. This was the coding benchmark of the GPT-3.5 and GPT-4 era, before the field moved to fixing real bugs in real repositories. Higher is better. | 48.8% | — |
| Overview | ||
| Company | Meta | OpenAI |
| Release date | Aug 24 2023 | Nov 13 2025 |
| Access | Open Weight | Closed |
| Model details | View model | View model |
Other comparisons
Code LlamavsClaude Fable 5.2GPT-5.1-CodexvsClaude Fable 5.2Code LlamavsGemini 4 CarbonGPT-5.1-CodexvsGemini 4 CarbonCode LlamavsGrok 4.7GPT-5.1-CodexvsGrok 4.7Code LlamavsDeepSeek-V4.1-Flash-1017GPT-5.1-CodexvsDeepSeek-V4.1-Flash-1017Code LlamavsMistral Large 4GPT-5.1-CodexvsMistral Large 4Code LlamavsKimi K3.1 ProGPT-5.1-CodexvsKimi K3.1 ProFrequently asked questions
Code Llama and GPT-5.1-Codex don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Code Llama shipped 812 days before GPT-5.1-Codex, so benchmark comparisons should account for the intervening progress.
Context windows are 16k (Code Llama) vs 400k (GPT-5.1-Codex). Code Llama is open weight, while GPT-5.1-Codex is closed.
Direct benchmark comparisons are unavailable — Code Llama and GPT-5.1-Codex don't publish scores on any of the same benchmarks.