Check ChatGLM chat and open-platform entry paths separately, review region, ASN, proxy risk, and IPv4/IPv6 exits, and keep network evidence separate from API, account, and quota eligibility.
Checking
Zhipu's consumer chat product and its developer open platform run on different primary domains. On networks that allow traffic by domain, only one side may be reachable.
Corporate networks, campus networks, and some security software allow traffic by domain. When only one primary domain is allowed, the chat product may work while the open platform fails, or the other way around. Test each one.
Zhipu serves users in mainland China, where direct access is normal. An overseas data-center or proxy exit does not improve access and tends to add failures, so rule out proxy rules first.
Connectivity only shows that a public resource can load. API calls can still fail because of keys, quota, or model permissions. Those are account-level conditions and fall outside IP and network checks.
