Kimi K2.5 vs GLM-5.2
Moonshot AI Kimi K2.5 | Z.ai GLM-5.2 | |
|---|---|---|
| Overview | ||
| Company | Moonshot AI | Z.ai |
| Release date | Jan 27 2026 | Jun 16 2026 |
| Access | Open Weight | Open Weight |
| Specifications | ||
Parameters | 1T | 744B |
Context window | 256k | 1M |
| 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. | 52% | — |
Agentic coding SWE-Bench ProCan the AI fix real bugs in real software? It's handed actual problems from open-source projects and has to write code that genuinely solves them. Higher is better. | — | 62.1% |
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. | 76.8% | — |
Agentic terminal coding Terminal-Bench 2.1Can the AI work in a command-line terminal — running commands and finishing technical setup tasks the way a developer would? Higher is better. | — | 81% |
Multidisciplinary reasoning Humanity's Last Exam · no toolsHumanity's Last Exam — extremely hard expert questions across many subjects, written so you can't just look up the answer. “No tools” means the AI answers on its own. Higher is better. | — | 40.5% |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 87.6% | 91.2%Best |
| Timeline | ||
| Release gap | Kimi K2.5 shipped 140 days before GLM-5.2 | |
Which is better: Kimi K2.5 or GLM-5.2?
GLM-5.2 leads Kimi K2.5 on 1 of the 1 benchmark they both report (GPQA Diamond). Kimi K2.5 shipped 140 days before GLM-5.2, so benchmark comparisons should account for the intervening progress.
Kimi K2.5 has 1T parameters, while GLM-5.2 has 744B. Context windows are 256k (Kimi K2.5) vs 1M (GLM-5.2).
On GPQA Diamond, GLM-5.2 leads at 91.2% vs Kimi K2.5 at 87.6%.
Frequently asked questions
Kimi K2.5 was released by Moonshot AI on Jan 27 2026.
GLM-5.2 was released by Z.ai on Jun 16 2026.
GLM-5.2 leads on GPQA Diamond — Kimi K2.5 87.6% vs GLM-5.2 91.2%.
Kimi K2.5 has a 256k context window; GLM-5.2 has 1M.