Kimi K2.5 vs GLM-4-9B
Moonshot AI Kimi K2.5 | Z.ai GLM-4-9B | |
|---|---|---|
| Overview | ||
| Company | Moonshot AI | Z.ai |
| Release date | Jan 27 2026 | Jun 5 2024 |
| Access | Open Weight | Open Weight |
| Specifications | ||
Parameters | 1T | 9B |
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. | 52% | — |
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% | — |
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% | — |
| Timeline | ||
| Release gap | GLM-4-9B shipped 601 days before Kimi K2.5 | |
Which is better: Kimi K2.5 or GLM-4-9B?
Kimi K2.5 and GLM-4-9B don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. GLM-4-9B shipped 601 days before Kimi K2.5, so benchmark comparisons should account for the intervening progress.
Kimi K2.5 has 1T parameters, while GLM-4-9B has 9B.
Direct benchmark comparisons are unavailable — Kimi K2.5 and GLM-4-9B don't publish scores on any of the same benchmarks.
Frequently asked questions
Kimi K2.5 was released by Moonshot AI on Jan 27 2026.
GLM-4-9B was released by Z.ai on Jun 5 2024.