GLM 4.5: Everything About the Chinese AI Model

GLM 4.5: What You Need to Know

GLM 4.5 is a large language model built by Zhipu AI, a Beijing-based company that spun out of Tsinghua University. If you follow AI developments primarily through English-language media, you might not have heard much about it. That's a mistake, because GLM 4.5 is a serious model that deserves attention.

Who Makes GLM?

Zhipu AI (also known as Zhipu Qingyan for their consumer product) has been building large language models since 2019. They're one of the leading AI labs in China, backed by significant government and private investment. Their models power applications across Chinese businesses, government services, and consumer products.

GLM stands for General Language Model, and the 4.5 release represents their latest publicly available version.

What GLM 4.5 Can Do

Multilingual Strength

GLM 4.5 is natively bilingual in Chinese and English. For Chinese-language tasks, it outperforms GPT-5 and Claude in most benchmarks. Chinese text generation, translation between Chinese and English, and understanding Chinese cultural context are all areas where GLM 4.5 has a clear edge.

English performance is good but not best-in-class. It handles standard tasks competently but lacks the polish of GPT-5 or Claude for English-specific work like creative writing or nuanced analysis of English-language documents.

Code Generation

GLM 4.5 performs surprisingly well on coding benchmarks, particularly for Python and Java. It's competitive with GPT-5 on standard programming tasks, though it falls behind on more complex software architecture discussions. For straightforward coding help, it's a legitimate option.

Mathematical Reasoning

Chinese AI models have historically performed well on math benchmarks, and GLM 4.5 continues this trend. It handles calculus, statistics, and mathematical proofs at a level comparable to GPT-5. For STEM students and researchers, this is notable.

Knowledge Base

GLM 4.5 has broader knowledge of Chinese history, literature, science, and current events than Western models. If you need AI assistance with topics where Chinese-language sources are more comprehensive, GLM 4.5 provides perspectives and information that GPT-5 and Claude simply don't have.

Limitations

Availability Outside China

Accessing GLM 4.5 from outside China can be complicated. Zhipu's consumer interface is primarily designed for Chinese users. API access is available internationally but requires navigating Chinese-language documentation and payment systems. This is the biggest practical barrier for Western users.

Aggregator platforms have started making Chinese models more accessible. Admix includes GLM models alongside Western alternatives, removing the friction of direct API setup.

Content Restrictions

GLM 4.5 operates under Chinese content regulations. It avoids certain political and historical topics, and its responses on sensitive subjects reflect these constraints. For most business and technical use cases, this doesn't matter. For research or analysis touching on topics sensitive in the Chinese context, be aware of these limitations.

English Nuance

While GLM 4.5's English is grammatically correct and fluent, it occasionally produces phrasing that sounds translated rather than natively written. For internal documents or technical work, this is fine. For customer-facing English content, you'd want to review and edit more carefully than with GPT-5 or Claude.

How It Compares

Against GPT-5: GLM 4.5 wins on Chinese-language tasks and is competitive on code and math. It trails on English writing, reasoning depth, and the overall polish of responses.

Against Claude Opus 4.5: GLM 4.5 has the Chinese language advantage but falls behind on long-form English analysis and nuanced reasoning.

Against Gemini 3 Pro: GLM 4.5 lacks Gemini's multimodal strengths but outperforms it on Chinese language tasks and is roughly comparable on English text.

Who Should Use GLM 4.5?

If you work with Chinese language content regularly, GLM 4.5 should be in your toolkit. Translators, businesses operating in Chinese markets, researchers studying Chinese topics, and bilingual professionals will find real value here.

For English-only users with no Chinese-language needs, the Western models are generally a better fit. But keeping an eye on GLM and other Chinese models is worthwhile. The quality gap is narrowing, and competition benefits everyone.