diff --git a/extensions/opencode-go/index.test.ts b/extensions/opencode-go/index.test.ts
index 3bfff478156..6832340fc6a 100644
--- a/extensions/opencode-go/index.test.ts
+++ b/extensions/opencode-go/index.test.ts
@@ -1,3 +1,4 @@
+import { getModels } from "@mariozechner/pi-ai";
 import { describe, expect, it } from "vitest";
 import { registerSingleProviderPlugin } from "../../test/helpers/plugins/plugin-registration.js";
 import { expectPassthroughReplayPolicy } from "../../test/helpers/provider-replay-policy.ts";
@@ -21,6 +22,55 @@ describe("opencode-go provider plugin", () => {
     });
   });
 
+  it("leaves OpenCode Go models to Pi's built-in registry", async () => {
+    const provider = await registerSingleProviderPlugin(plugin);
+    expect(provider.catalog).toBeUndefined();
+
+    const models = new Map(getModels("opencode-go").map((model) => [model.id, model]));
+    expect([...models.keys()]).toEqual([
+      "glm-5",
+      "glm-5.1",
+      "kimi-k2.5",
+      "kimi-k2.6",
+      "mimo-v2-omni",
+      "mimo-v2-pro",
+      "minimax-m2.5",
+      "minimax-m2.7",
+      "qwen3.5-plus",
+      "qwen3.6-plus",
+    ]);
+
+    expect(models.get("kimi-k2.6")).toMatchObject({
+      api: "openai-completions",
+      baseUrl: "https://opencode.ai/zen/go/v1",
+      input: ["text", "image"],
+      reasoning: true,
+      contextWindow: 262_144,
+      maxTokens: 65_536,
+    });
+    expect(models.get("minimax-m2.7")).toMatchObject({
+      api: "anthropic-messages",
+      baseUrl: "https://opencode.ai/zen/go",
+      reasoning: true,
+      contextWindow: 204_800,
+      maxTokens: 131_072,
+    });
+    expect(models.get("mimo-v2-pro")).toMatchObject({
+      api: "openai-completions",
+      baseUrl: "https://opencode.ai/zen/go/v1",
+      input: ["text"],
+      reasoning: true,
+      contextWindow: 1_048_576,
+      maxTokens: 64_000,
+    });
+    expect(models.get("mimo-v2-omni")).toMatchObject({
+      input: ["text", "image"],
+      reasoning: true,
+      contextWindow: 262_144,
+      maxTokens: 64_000,
+    });
+  });
+
   it("canonicalizes stale OpenCode Go base URLs", async () => {
     const provider = await registerSingleProviderPlugin(plugin);