diff --git a/external.ts b/external.ts
index 2349b6a..a0b01ff 100644
--- a/external.ts
+++ b/external.ts
@@ -29,6 +29,7 @@ export function formatMcpToolRef(agentId: AgentId, toolName: string): string {
 // model alias registry lives in models.ts — re-exported here for shared access
 export type { ModelAlias, ModelProvider, ProviderConfig } from "./models.ts";
 export {
+  DEFAULT_PROXY_MODEL,
   getModelEnvVars,
   getModelManagedCredentials,
   getModelProvider,
diff --git a/internal/index.ts b/internal/index.ts
index 40a6816..d6d1040 100644
--- a/internal/index.ts
+++ b/internal/index.ts
@@ -16,6 +16,7 @@ export type {
   WriteablePayload,
 } from "../external.ts";
 export {
+  DEFAULT_PROXY_MODEL,
   getModelEnvVars,
   getModelManagedCredentials,
   getModelProvider,
diff --git a/models.test.ts b/models.test.ts
index 42f8e69..0d1aeef 100644
--- a/models.test.ts
+++ b/models.test.ts
@@ -1,5 +1,6 @@
 import { describe, expect, it } from "vitest";
 import {
+  DEFAULT_PROXY_MODEL,
   getModelEnvVars,
   getModelProvider,
   isBedrockAnthropicId,
@@ -134,6 +135,12 @@ describe("resolveDisplayAlias", () => {
   });
 });
 
+describe("DEFAULT_PROXY_MODEL", () => {
+  it("tracks moonshotai/kimi-k2 openRouterResolve", () => {
+    expect(DEFAULT_PROXY_MODEL).toBe(resolveOpenRouterModel("moonshotai/kimi-k2"));
+  });
+});
+
 describe("resolveOpenRouterModel", () => {
   it("returns the openrouter specifier for a non-deprecated alias", () => {
     expect(resolveOpenRouterModel("anthropic/claude-opus")).toBe(
diff --git a/models.ts b/models.ts
index 551a2a0..1717bda 100644
--- a/models.ts
+++ b/models.ts
@@ -570,6 +570,13 @@ export const modelAliases: ModelAlias[] = Object.entries(providers).flatMap(
     }))
 );
 
+/** OpenRouter target when Router or OSS funding is active and `repo.model` is null. */
+const defaultProxyAlias = modelAliases.find((a) => a.slug === "moonshotai/kimi-k2");
+if (!defaultProxyAlias?.openRouterResolve) {
+  throw new Error("DEFAULT_PROXY_MODEL: moonshotai/kimi-k2 missing openRouterResolve");
+}
+export const DEFAULT_PROXY_MODEL = defaultProxyAlias.openRouterResolve;
+
 // ── resolution ─────────────────────────────────────────────────────────────────
 
 /** resolve a model slug to its concrete models.dev specifier (e.g. "anthropic/claude-opus-4-6") */
diff --git a/test/models-catalog.main.test.ts b/test/models-catalog.main.test.ts
index bf2666a..ad22ef6 100644
--- a/test/models-catalog.main.test.ts
+++ b/test/models-catalog.main.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it } from "vitest";
-import { modelAliases, resolveDisplayAlias } from "../models.ts";
+import { DEFAULT_PROXY_MODEL, modelAliases, resolveDisplayAlias } from "../models.ts";
 
 // ── catalog drift tests ─────────────────────────────────────────────────────
 //
@@ -99,6 +99,29 @@ describe("openRouterResolve models.dev validity", async () => {
   }
 });
 
+describe("DEFAULT_PROXY_MODEL models.dev validity", async () => {
+  const data = await api;
+  const parsed = parseResolve(DEFAULT_PROXY_MODEL);
+
+  it(`${DEFAULT_PROXY_MODEL} exists on models.dev`, () => {
+    const providerData = data[parsed.provider];
+    expect(providerData, `provider "${parsed.provider}" not found on models.dev`).toBeDefined();
+    const model = providerData.models[parsed.modelId];
+    expect(
+      model,
+      `model "${parsed.modelId}" not found under ${parsed.provider} on models.dev`
+    ).toBeDefined();
+  });
+
+  it(`${DEFAULT_PROXY_MODEL} is not deprecated on models.dev`, () => {
+    const model = data[parsed.provider]?.models[parsed.modelId];
+    if (!model) return;
+    expect(model.status, `${DEFAULT_PROXY_MODEL} is deprecated on models.dev`).not.toBe(
+      "deprecated"
+    );
+  });
+});
+
 type OpenRouterModel = { id: string };
 type OpenRouterModelsResponse = { data: OpenRouterModel[] };