feat(ui): add NanoGPT to the Add Model provider dropdown

litellm/proxy/public_endpoints/provider_create_fields.json

@@ -1922,6 +1922,34 @@
     ],
     "default_model_placeholder": "gpt-3.5-turbo"
   },
+  {
+    "provider": "NANO_GPT",
+    "provider_display_name": "NanoGPT",
+    "litellm_provider": "nano-gpt",
+    "credential_fields": [
+      {
+        "key": "api_base",
+        "label": "API Base",
+        "placeholder": null,
+        "tooltip": null,
+        "required": false,
+        "field_type": "text",
+        "options": null,
+        "default_value": null
+      },
+      {
+        "key": "api_key",
+        "label": "API Key",
+        "placeholder": null,
+        "tooltip": null,
+        "required": false,
+        "field_type": "password",
+        "options": null,
+        "default_value": null
+      }
+    ],
+    "default_model_placeholder": "nano-gpt/gpt-4o"
+  },
   {
     "provider": "NEBIUS",
     "provider_display_name": "Nebius",

tests/test_litellm/proxy/public_endpoints/test_public_endpoints.py

@@ -243,6 +243,36 @@ def test_bedrock_mantle_provider_fields():
     assert fields_by_key["api_base"]["field_type"] == "text"
 
 
+def test_nano_gpt_provider_fields():
+    """NanoGPT must be a selectable provider in the Add Model flow.
+
+    The dropdown is driven entirely by /public/providers/fields, so a missing
+    entry means NanoGPT cannot be added through the UI at all even though the
+    backend already supports the `nano-gpt/` route (regression guard for
+    https://github.com/BerriAI/litellm/issues/34499). `provider` must equal the
+    UI provider_map key so the model dropdown resolves nano-gpt models, and
+    `litellm_provider` must be the backend slug.
+    """
+    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()
+
+    nano_gpt = next((p for p in providers if p["provider"] == "NANO_GPT"), None)
+    assert nano_gpt is not None, "NanoGPT provider entry not found"
+
+    assert nano_gpt["provider_display_name"] == "NanoGPT"
+    assert nano_gpt["litellm_provider"] == "nano-gpt"
+    assert nano_gpt["default_model_placeholder"].startswith("nano-gpt/")
+
+    fields_by_key = {f["key"]: f for f in nano_gpt["credential_fields"]}
+    assert "api_key" in fields_by_key
+    assert fields_by_key["api_key"]["field_type"] == "password"
+
+
 def test_google_ai_studio_provider_fields_expose_api_base():
     """The Google AI Studio (gemini) credential form must let admins set a custom
     api_base so they can point at a Gemini-compatible gateway (e.g. a self-hosted

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

@@ -94,6 +94,16 @@ describe("provider_info_helpers", () => {
       expect(result.displayName).toBe(Providers.ZAI);
     });
 
+    it("should resolve the nano-gpt provider value to the NanoGPT display name", () => {
+      // Regression test for https://github.com/BerriAI/litellm/issues/34499 —
+      // the backend already supports the `nano-gpt/` route and the docs have a
+      // dedicated page, but the UI dropdown was missing an entry, so
+      // `getProviderLogoAndName("nano-gpt")` previously returned the raw slug
+      // as the display name (no mapping).
+      const result = getProviderLogoAndName("nano-gpt");
+      expect(result.displayName).toBe(Providers.NANO_GPT);
+    });
+
     it("should return provider value as display name when no mapping exists", () => {
       const unknownProvider = "unknown_provider";
       const result = getProviderLogoAndName(unknownProvider);
@@ -130,6 +140,7 @@ describe("provider_info_helpers", () => {
         Providers.LEMONADE,
         Providers.LLAMAFILE,
         Providers.MARITALK,
+        Providers.NANO_GPT,
         Providers.NLP_CLOUD,
         Providers.NSCALE,
         Providers.OVHCLOUD,

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

@@ -125,6 +125,7 @@ export enum Providers {
   MistralAI = "Mistral AI",
   MOONSHOT = "Moonshot",
   MORPH = "Morph",
+  NANO_GPT = "NanoGPT",
   NEBIUS = "Nebius",
   NLP_CLOUD = "Nlp Cloud",
   NOVITA = "Novita",
@@ -233,6 +234,7 @@ export const provider_map: Record<string, string> = {
   MistralAI: "mistral",
   MOONSHOT: "moonshot",
   MORPH: "morph",
+  NANO_GPT: "nano-gpt",
   NEBIUS: "nebius",
   NLP_CLOUD: "nlp_cloud",
   NOVITA: "novita",