Gemini 3.1 Flash vs GLM-4.5
Google Gemini 3.1 Flash | Z.ai GLM-4.5 | |
|---|---|---|
| Overview | ||
| Company | Z.ai | |
| Release date | Feb 26 2026 | Jul 28 2025 |
| Access | Proprietary | Open Weight |
| Specifications | ||
Parameters | — | 355B |
Context window | — | 128k |
| Benchmarks | ||
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. | — | 64.2% |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | — | 79.1% |
| Timeline | ||
| Release gap | GLM-4.5 shipped 213 days before Gemini 3.1 Flash | |
Which is better: Gemini 3.1 Flash or GLM-4.5?
Gemini 3.1 Flash and GLM-4.5 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. GLM-4.5 shipped 213 days before Gemini 3.1 Flash, so benchmark comparisons should account for the intervening progress.
Gemini 3.1 Flash is proprietary, while GLM-4.5 is open weight.
Direct benchmark comparisons are unavailable — Gemini 3.1 Flash and GLM-4.5 don't publish scores on any of the same benchmarks.
Frequently asked questions
Gemini 3.1 Flash was released by Google on Feb 26 2026.
GLM-4.5 was released by Z.ai on Jul 28 2025.
Gemini 3.1 Flash is a proprietary model released by Google. GLM-4.5 is an open weight model released by Z.ai.
Other comparisons
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