diff --git a/src/plugins/manifest-registry.test.ts b/src/plugins/manifest-registry.test.ts
index 1b7105287ef..2a544191656 100644
--- a/src/plugins/manifest-registry.test.ts
+++ b/src/plugins/manifest-registry.test.ts
@@ -503,6 +503,23 @@ describe("loadPluginManifestRegistry", () => {
     );
   });
 
+  it("accepts media-understanding-style id hints without warning", () => {
+    const dir = makeTempDir();
+    writeManifest(dir, { id: "groq", configSchema: { type: "object" } });
+
+    const registry = loadRegistry([
+      createPluginCandidate({
+        idHint: "groq-media-understanding",
+        rootDir: dir,
+        origin: "bundled",
+      }),
+    ]);
+
+    expect(registry.diagnostics.some((diag) => diag.message.includes("plugin id mismatch"))).toBe(
+      false,
+    );
+  });
+
   it("still warns for unrelated id hint mismatches", () => {
     const dir = makeTempDir();
     writeManifest(dir, { id: "openai", configSchema: { type: "object" } });
diff --git a/src/plugins/manifest-registry.ts b/src/plugins/manifest-registry.ts
index d45ccf3e126..48729dc9aec 100644
--- a/src/plugins/manifest-registry.ts
+++ b/src/plugins/manifest-registry.ts
@@ -146,7 +146,8 @@ function isCompatiblePluginIdHint(idHint: string | undefined, manifestId: string
   return (
     normalizedHint === `${manifestId}-provider` ||
     normalizedHint === `${manifestId}-plugin` ||
-    normalizedHint === `${manifestId}-sandbox`
+    normalizedHint === `${manifestId}-sandbox` ||
+    normalizedHint === `${manifestId}-media-understanding`
   );
 }