Kimi K2 vs GLM-4.5-Air
Moonshot AI Kimi K2 | Z.ai GLM-4.5-Air | |
|---|---|---|
| Overview | ||
| Company | Moonshot AI | Z.ai |
| Release date | Jul 11 2025 | Jul 28 2025 |
| Access | Open Weight | Open Weight |
| Specifications | ||
Parameters | 1T | 106B |
Context window | 128k | — |
| 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. | 10% | — |
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%Best | 59.8% |
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 | Kimi K2 shipped 17 days before GLM-4.5-Air | |
Which is better: Kimi K2 or GLM-4.5-Air?
Kimi K2 leads GLM-4.5-Air on 1 of the 1 benchmark they both report (SWE-Bench Verified). Kimi K2 shipped 17 days before GLM-4.5-Air, so benchmark comparisons should account for the intervening progress.
Kimi K2 has 1T parameters, while GLM-4.5-Air has 106B.
On SWE-Bench Verified, Kimi K2 leads at 65.8% vs GLM-4.5-Air at 59.8%.
Frequently asked questions
Kimi K2 was released by Moonshot AI on Jul 11 2025.
GLM-4.5-Air was released by Z.ai on Jul 28 2025.
Kimi K2 leads on SWE-Bench Verified — Kimi K2 65.8% vs GLM-4.5-Air 59.8%.
Other comparisons
Kimi K2 vs Claude Fable 5GLM-4.5-Air vs Claude Fable 5Kimi K2 vs GPT-5.6 SolGLM-4.5-Air vs GPT-5.6 SolKimi K2 vs Gemini OmniGLM-4.5-Air vs Gemini OmniKimi K2 vs Muse SparkGLM-4.5-Air vs Muse SparkKimi K2 vs Grok 4.3 BetaGLM-4.5-Air vs Grok 4.3 BetaKimi K2 vs DeepSeek-V4-ProGLM-4.5-Air vs DeepSeek-V4-Pro