Home / Safety / GLM (Z.ai) for IT & software development
Z.ai (Zhipu AI)How safe is GLM (Z.ai) for IT & software development?
GLM (Z.ai) carries a concrete GDPR concern. Parent company Zhipu (Beijing) falls under Chinese data and security legislation, regardless of where the servers are located. For sensitive data, self-hosting the MIT-licensed weights is the recommended mitigation. Weigh this heavily before deploying it in IT & software development.
Where does GLM (Z.ai) stand in IT & software development?
Shared spot 30 of 36 options for IT & software development (professional tools and general assistants) on GDPR profile. 7 options share the GLM (Z.ai) profile: caution. Each tile is an option we track for this field; click for the check.
Published safeguards
The international service Z.ai runs through JINGSHENG HENGXING TECHNOLOGY PTE. LTD. (Singapore); personal data is in principle processed in Singapore. According to the data processing agreement, API content is processed in real time and not stored. GLM-5.2 is open-weight under MIT and can therefore be fully self-hosted or hosted through an EU provider.
How to use GLM (Z.ai) safely
- Use the business variant and sign a data processing agreement (DPA).
- Do not enter unnecessary personal data into prompts; anonymise where possible.
- Ask the provider explicitly where data is stored and processed.
- Keep a professional in the loop: source code is a trade secret and intellectual property.
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Cloudflare reported that GLM-5.3 on Workers AI (@cf/zai-org/glm-5.3) returned data from other customers' requests in 27 answers between 9 August and 2026 September 155. Only prompts above 681,280 tokens were affected; the cause was a KV cache that was too small in the hosting configuration, not the model itself. Cloudflare found no evidence of misuse and fixed it on 9 September. If you used very long prompts containing personal data via Workers AI in that period, assess whether a data breach has occurred. source
Questions
- How safe is GLM (Z.ai) for IT & software development?
- GLM (Z.ai) has a concrete GDPR concern. Parent company Zhipu (Beijing) is subject to Chinese data and security legislation, wherever the servers are located. For sensitive data, self-hosting the MIT-licensed weights is the recommended mitigation. Weigh this heavily before deploying it in IT & software development. There is a concrete GDPR concern, read the details on the page.
- Does GLM (Z.ai) train on my data?
- The international service Z.ai runs through JINGSHENG HENGXING TECHNOLOGY PTE. LTD. (Singapore); personal data is in principle processed in Singapore. According to the data processing agreement, API content is processed in real time and not stored. GLM-5.2 is open-weight under MIT and can therefore be fully self-hosted or hosted through an EU provider.
- What should I watch out for with AI in IT & software development?
- Source code is trade secret and intellectual property. Check whether AI coding assistants store your code or use it for model training (an opt-out or business plan is required). Use on-premises or privacy-compliant variants for sensitive projects. AI-generated code sometimes contains security vulnerabilities or errors, so always have a developer review it, especially production code.
Source documents
Everything about GLM (Z.ai) Best AI for IT & software development
Summarised by the editorial team from provider documentation · not legal advice
Last checked: 1 November 2026 · How we check
Source: , checked on 1 November 2026
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