GLM-5.3 — reviews, specs & pricing
Z.ai's 744B flagship; open weights released after a two-week cyber-capability safety review.
Summary
GLM-5.3 is Zhipu AI's flagship 744-billion parameter model, designed to deliver state-of-the-art performance in chat and coding tasks. Released openly following a comprehensive two-week cyber-capability safety review, it provides researchers and developers with an unprecedented level of local control over a frontier-class model. It bridges the gap between proprietary capabilities and open-source flexibility for complex reasoning workloads.
Sample use case
A financial technology firm can deploy GLM-5.3 within their private cloud infrastructure to automate legacy system refactoring and secure code auditing. By utilizing the model's advanced code understanding, developers can parse millions of lines of proprietary legacy code, automatically identifying security vulnerabilities and translating the logic into modern, optimized code with inline documentation.
Specifications
- Provider: zhipu ai
- License: source-available
- Parameters: 744B
- Released: 2026-08-14
Pros
- Massive 744B parameter power
- Open-weights release for complete deployment control
- Exceptional coding and conversational performance
- Rigorously vetted for cyber-security safety
Cons
- Demands immense hardware resources to run locally
- Complex orchestration required for multi-GPU serving
- High inference latency without specialized optimization
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