Data retention - verified
Does Z.ai store your API prompts?
Default retention: not retained by default. Trains on your API data: No (the no-improvement sentence is printed in square brackets in the terms). Zero data retention: not stated (no named ZDR program; the API DPA says content is not stored). Regional processing: none documented.
Read from docs.z.ai. Compare every AI API's data retention
- Trains on data
- No
- ZDR
- Not stated
- Regions
- None
- Verified
- 2026-10-18
How long are prompts kept by default?
- Default retention
Not retained by default
API DPA says Z.ai does not store content customers or end users provide or generate; it is processed in real time and not saved. Other Customer Data is stored temporarily and deleted after termination of the Terms.
“b) The Company do not store any of the content the Customer or its End Users provide or generate while using our Services. This includes any texts, or other data you input. This information is processed in real-time to provide the Customer and End Users with the API Service and is not saved on our servers.”
docs.z.ai “c) For Customer Data other than those provided under Section 4(b), Company will temporarily store such data for the purposes of providing the API Services or in compliance with applicable laws. The Company will delete such data after the termination of the Terms unless otherwise required by applicable laws.”
docs.z.ai - Duration
- Not stated
- Purpose
- Not stated
Does it train on your API data?
No
The no-improvement sentence is printed in square brackets in the terms
Terms of Use: End User Content used only to provide the API Services, comply with law, enforce policies and prevent abuse; the no-improvement sentence is printed in square brackets.
“b) We will only use End User Content as necessary to provide you with the API Services, comply with applicable law, enforce our policies, and prevent abuse. [We will not use End User Content to develop or improve Services, unless you explicitly agree to such use.]”
Zero data retention (ZDR)
- Availability
Not stated: the provider's pages do not mention a ZDR program
No named ZDR program; the API DPA says content is not stored
No separately named ZDR program found; the API DPA states content is not stored (see defaultRetention).
- Who can get it
- Not stated
- Not covered
- Not stated
Features kept longer
Stateful features hold your content until a job finishes, a window expires or you delete it, often regardless of the default above.
Feature exceptions: Not stated
Where is your data stored and processed?
- Regional processing
None documented
- Stated location
Singapore
- How to choose
- Not stated
- What it covers
Processing (as stated).
- Summary
Services generally provided from Singapore; Customer Data generally processed in Singapore. No region choice documented.
- From the docs
“a) Company generally provide the Services from Singapore, and our group companies and their designated service providers are typically located in Singapore. As a result, Customer Data is generally processed in Singapore.”
docs.z.ai
Regional endpoints
- General (no region stated)
api.z.ai“https://api.z.ai/api/paas/v4/”
docs.z.ai
Certifications
Certifications on the pages checked: Not stated
Research notes
- The bracketed training sentence in the Terms of Use reads like an unresolved draft placeholder; treat as stated but flag. GLM Coding Plan uses a separate dedicated endpoint.
FAQ
Does Z.ai store your API prompts?
Not retained by default. API DPA says Z.ai does not store content customers or end users provide or generate; it is processed in real time and not saved. Other Customer Data is stored temporarily and deleted after termination of the Terms. The provider says: "b) The Company do not store any of the content the Customer or its End Users provide or generate while using our Services. This includes any texts, or other data you input. This information is processed in real-time to provide the Customer and End Users with the API Service and is not saved on our servers."
Does Z.ai train on your API data?
No (the no-improvement sentence is printed in square brackets in the terms). The provider says: "b) We will only use End User Content as necessary to provide you with the API Services, comply with applicable law, enforce our policies, and prevent abuse. [We will not use End User Content to develop or improve Services, unless you explicitly agree to such use.]"
Does Z.ai offer zero data retention?
Not stated (no named ZDR program; the API DPA says content is not stored). No separately named ZDR program found; the API DPA states content is not stored (see defaultRetention).
Where does Z.ai process your data?
Regional processing options: None documented. Stated processing location: Singapore.
Sources
Last verified from Z.ai's own pages below. Quotes are verbatim.
This page summarizes what each provider's own pages say. It is not legal advice; your contract, data processing addendum and the provider's current terms govern what happens to your data.
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