Gemini 1.5 Flash vs GLM-4.5
Google Gemini 1.5 Flash | Z.ai GLM-4.5 | |
|---|---|---|
| Overview | ||
| Company | Z.ai | |
| Release date | May 14 2024 | 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 | Gemini 1.5 Flash shipped 440 days before GLM-4.5 | |
Which is better: Gemini 1.5 Flash or GLM-4.5?
Gemini 1.5 Flash and GLM-4.5 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Gemini 1.5 Flash shipped 440 days before GLM-4.5, so benchmark comparisons should account for the intervening progress.
Gemini 1.5 Flash is proprietary, while GLM-4.5 is open weight.
Direct benchmark comparisons are unavailable — Gemini 1.5 Flash and GLM-4.5 don't publish scores on any of the same benchmarks.
Frequently asked questions
Gemini 1.5 Flash was released by Google on May 14 2024.
GLM-4.5 was released by Z.ai on Jul 28 2025.
Gemini 1.5 Flash is a proprietary model released by Google. GLM-4.5 is an open weight model released by Z.ai.
Other comparisons
Gemini 1.5 Flash vs Claude Fable 5GLM-4.5 vs Claude Fable 5Gemini 1.5 Flash vs GPT-5.6 SolGLM-4.5 vs GPT-5.6 SolGemini 1.5 Flash vs Muse SparkGLM-4.5 vs Muse SparkGemini 1.5 Flash vs Grok 4.3 BetaGLM-4.5 vs Grok 4.3 BetaGemini 1.5 Flash vs DeepSeek-V4-ProGLM-4.5 vs DeepSeek-V4-ProGemini 1.5 Flash vs Mistral Medium 3.5GLM-4.5 vs Mistral Medium 3.5