fix(ui): register tencent in the Add Model provider dropdown

The Add Model provider dropdown is driven by the proxy's
/public/providers/fields endpoint, which serves
provider_create_fields.json. Tencent was frozen in the test's
ADD_MODEL_UNLISTED_PROVIDERS set, so it never appeared in the dropdown.

Add a Tencent entry (optional api_base + required api_key, matching
TENCENT_API_BASE/TENCENT_API_KEY) and unfreeze it in the backend test.
Register Tencent in the UI Providers enum, provider_map, and placeholder
map so the dropdown resolves the display name and model placeholder.

litellm/proxy/public_endpoints/provider_create_fields.json

@@ -2925,6 +2925,34 @@
     ],
     "default_model_placeholder": "soniox/stt-async-v5"
   },
+  {
+    "provider": "Tencent",
+    "provider_display_name": "Tencent",
+    "litellm_provider": "tencent",
+    "credential_fields": [
+      {
+        "key": "api_base",
+        "label": "API Base",
+        "placeholder": "https://tokenhub-intl.tencentcloudmaas.com/v1",
+        "tooltip": null,
+        "required": false,
+        "field_type": "text",
+        "options": null,
+        "default_value": null
+      },
+      {
+        "key": "api_key",
+        "label": "API Key",
+        "placeholder": null,
+        "tooltip": null,
+        "required": true,
+        "field_type": "password",
+        "options": null,
+        "default_value": null
+      }
+    ],
+    "default_model_placeholder": "tencent/deepseek-v4-pro"
+  },
   {
     "provider": "TEXT_COMPLETION_CODESTRAL",
     "provider_display_name": "Text-Completion-Codestral",

tests/test_litellm/proxy/public_endpoints/test_public_endpoints.py

@@ -346,6 +346,38 @@ def test_chatgpt_provider_fields():
     assert chatgpt["credential_fields"] == []
 
 
+def test_tencent_provider_fields():
+    """Tencent TokenHub must be selectable in the Add Model flow.
+
+    The dropdown is driven entirely by /public/providers/fields, so a missing
+    entry means Tencent cannot be added through the UI at all. The credential
+    fields must match what the backend honors: a required api_key (TENCENT_API_KEY)
+    and an optional api_base override (TENCENT_API_BASE).
+    """
+    app_instance = FastAPI()
+    app_instance.include_router(router)
+    test_client = TestClient(app_instance)
+
+    response = test_client.get("/public/providers/fields")
+    assert response.status_code == 200
+    providers = response.json()
+
+    tencent = next((p for p in providers if p["provider"] == "Tencent"), None)
+    assert tencent is not None, "Tencent provider entry not found"
+
+    assert tencent["provider_display_name"] == "Tencent"
+    assert tencent["litellm_provider"] == LlmProviders.TENCENT.value
+    assert tencent["default_model_placeholder"].startswith("tencent/")
+
+    fields_by_key = {f["key"]: f for f in tencent["credential_fields"]}
+
+    assert fields_by_key["api_key"]["required"] is True
+    assert fields_by_key["api_key"]["field_type"] == "password"
+
+    assert fields_by_key["api_base"]["field_type"] == "text"
+    assert fields_by_key["api_base"]["required"] is False
+
+
 ADD_MODEL_UNLISTED_PROVIDERS: Final = frozenset(
     {
         "a2a",
@@ -381,7 +413,6 @@ ADD_MODEL_UNLISTED_PROVIDERS: Final = frozenset(
         "scaleway",
         "stability",
         "synthetic",
-        "tencent",
         "tensormesh",
         "text-completion-inception",
         "valkey",

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

@@ -176,6 +176,7 @@ describe("provider_info_helpers", () => {
         Providers.PETALS,
         Providers.PG_VECTOR,
         Providers.PREDIBASE,
+        Providers.Tencent,
         Providers.WANDB,
         Providers.ZAI,
       ];
@@ -286,6 +287,10 @@ describe("provider_info_helpers", () => {
       expect(getPlaceholder("CHATGPT")).toBe("chatgpt/gpt-5.4");
     });
 
+    it("should return a tencent/ placeholder for the Tencent provider", () => {
+      expect(getPlaceholder(Providers.Tencent)).toBe("tencent/deepseek-v4-pro");
+    });
+
     it("should return default gpt-3.5-turbo placeholder for unknown provider", () => {
       expect(getPlaceholder("UnknownProvider" as any)).toBe("gpt-3.5-turbo");
     });

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

@@ -163,6 +163,7 @@ export enum Providers {
   Snowflake = "Snowflake",
   Soniox = "Soniox",
   TEXT_COMPLETION_CODESTRAL = "Text-Completion-Codestral",
+  Tencent = "Tencent",
   TogetherAI = "TogetherAI",
   TOPAZ = "Topaz",
   Triton = "Triton",
@@ -279,6 +280,7 @@ export const provider_map: Record<string, string> = {
   Snowflake: "snowflake",
   Soniox: "soniox",
   TEXT_COMPLETION_CODESTRAL: "text-completion-codestral",
+  Tencent: "tencent",
   TogetherAI: "together_ai",
   TOPAZ: "topaz",
   Triton: "triton",
@@ -441,6 +443,7 @@ const providerPlaceholderMap: Partial<Record<Providers, string>> = {
   [Providers.SageMaker]: "sagemaker/jumpstart-dft-meta-textgeneration-llama-2-7b",
   [Providers.SCX_AI]: "scx-ai/GLM-5.2",
   [Providers.Snowflake]: "snowflake/mistral-7b",
+  [Providers.Tencent]: "tencent/deepseek-v4-pro",
   [Providers.Vertex_AI]: "gemini-pro",
   [Providers.VolcEngine]: "volcengine/<any-model-on-volcengine>",
   [Providers.Voyage]: "voyage/",