LLaMA 3.1 vs Kimi K2 (0905)
Meta LLaMA 3.1 | Moonshot AI Kimi K2 (0905) | |
|---|---|---|
| Overview | ||
| Company | Meta | Moonshot AI |
| Release date | Jul 23 2024 | Sep 5 2025 |
| Access | Open Weight | Open Weight |
| Specifications | ||
Parameters | — | 1T |
Context window | — | 256k |
| 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% | — |
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. | — | 65.8% |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | — | 75.1% |
| Timeline | ||
| Release gap | LLaMA 3.1 shipped 409 days before Kimi K2 (0905) | |
Which is better: LLaMA 3.1 or Kimi K2 (0905)?
LLaMA 3.1 and Kimi K2 (0905) don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. LLaMA 3.1 shipped 409 days before Kimi K2 (0905), so benchmark comparisons should account for the intervening progress.
Published specifications for these two models are limited — see each model page for the latest details.
Direct benchmark comparisons are unavailable — LLaMA 3.1 and Kimi K2 (0905) don't publish scores on any of the same benchmarks.
Frequently asked questions
LLaMA 3.1 was released by Meta on Jul 23 2024.
Kimi K2 (0905) was released by Moonshot AI on Sep 5 2025.
Other comparisons
LLaMA 3.1 vs Claude Sonnet 5Kimi K2 (0905) vs Claude Sonnet 5LLaMA 3.1 vs GPT-5.6 SolKimi K2 (0905) vs GPT-5.6 SolLLaMA 3.1 vs Gemini OmniKimi K2 (0905) vs Gemini OmniLLaMA 3.1 vs Grok 4.5Kimi K2 (0905) vs Grok 4.5LLaMA 3.1 vs DeepSeek-V4-ProKimi K2 (0905) vs DeepSeek-V4-ProLLaMA 3.1 vs Mistral Medium 3.5Kimi K2 (0905) vs Mistral Medium 3.5