feat: add Z.AI provider to UI dashboard

Registers Z.AI in the dashboard's provider dropdown so users can
configure Z.AI models from the UI. Backend support for the zai/
prefix already exists in litellm/llms/zai/.

- provider_create_fields.json: add ZAI entry with api_key (required)
  and api_base (optional, defaults to https://api.z.ai/api/paas/v4).
  The api_base tooltip also notes the alternative GLM Coding Plan
  endpoint at https://api.z.ai/api/coding/paas/v4 for subscribers.
- provider_info_helpers.tsx: register ZAI in Providers enum,
  provider_map, and providerLogoMap.
- zai.svg: sourced from LobeHub icons
  (https://lobehub.com/icons/zai), matches https://chat.z.ai branding.

Follows the pattern of MiniMax PR #18496.

Fixes #25482

litellm/proxy/public_endpoints/provider_create_fields.json

@@ -3056,6 +3056,34 @@
     ],
     "default_model_placeholder": "gpt-3.5-turbo"
   },
+  {
+    "provider": "ZAI",
+    "provider_display_name": "Z.AI",
+    "litellm_provider": "zai",
+    "credential_fields": [
+      {
+        "key": "api_key",
+        "label": "API Key",
+        "placeholder": "your-zai-api-key",
+        "tooltip": "Z.AI API Key from https://z.ai/manage-apikey/apikey-list",
+        "required": true,
+        "field_type": "password",
+        "options": null,
+        "default_value": null
+      },
+      {
+        "key": "api_base",
+        "label": "API Base",
+        "placeholder": "https://api.z.ai/api/paas/v4",
+        "tooltip": "General: https://api.z.ai/api/paas/v4. GLM Coding Plan: https://api.z.ai/api/coding/paas/v4. Override for self-hosted endpoints.",
+        "required": false,
+        "field_type": "text",
+        "options": null,
+        "default_value": "https://api.z.ai/api/paas/v4"
+      }
+    ],
+    "default_model_placeholder": "zai/glm-4.6"
+  },
   {
     "provider": "CURSOR",
     "provider_display_name": "Cursor",

ui/litellm-dashboard/public/assets/logos/zai.svg

@@ -0,0 +1 @@
+<svg fill="currentColor" fill-rule="evenodd" height="1em" style="flex:none;line-height:1" viewBox="0 0 24 24" width="1em" xmlns="http://www.w3.org/2000/svg"><title>Z.ai</title><path d="M12.105 2L9.927 4.953H.653L2.83 2h9.276zM23.254 19.048L21.078 22h-9.242l2.174-2.952h9.244zM24 2L9.264 22H0L14.736 2H24z"></path></svg>

ui/litellm-dashboard/src/components/provider_info_helpers.tsx

@@ -103,6 +103,7 @@ export enum Providers {
   WATSONX_TEXT = "Watsonx Text",
   xAI = "xAI",
   XINFERENCE = "Xinference",
+  ZAI = "Z.AI",
 }
 
 export const provider_map: Record<string, string> = {
@@ -210,6 +211,7 @@ export const provider_map: Record<string, string> = {
   WATSONX_TEXT: "watsonx_text",
   xAI: "xai",
   XINFERENCE: "xinference",
+  ZAI: "zai",
 };
 
 const asset_logos_folder = "../ui/assets/logos/";
@@ -299,6 +301,7 @@ export const providerLogoMap: Record<string, string> = {
   [Providers.WATSONX_TEXT]: `${asset_logos_folder}watsonx.svg`,
   [Providers.xAI]: `${asset_logos_folder}xai.svg`,
   [Providers.XINFERENCE]: `${asset_logos_folder}xinference.svg`,
+  [Providers.ZAI]: `${asset_logos_folder}zai.svg`,
 };
 
 export const getProviderLogoAndName = (providerValue: string): { logo: string; displayName: string } => {