diff --git a/packages/opencode/script/build.ts b/packages/opencode/script/build.ts
index a97cf32496..4a94bf6c3e 100755
--- a/packages/opencode/script/build.ts
+++ b/packages/opencode/script/build.ts
@@ -21,10 +21,14 @@ const modelsData = process.env.MODELS_DEV_API_JSON
   ? await Bun.file(process.env.MODELS_DEV_API_JSON).text()
   : await fetch(`${modelsUrl}/api.json`).then((x) => x.text())
 await Bun.write(
-  path.join(dir, "src/provider/models-snapshot.ts"),
-  `// Auto-generated by build.ts - do not edit\nexport const snapshot = ${modelsData} as const\n`,
+  path.join(dir, "src/provider/models-snapshot.js"),
+  `// @ts-nocheck\n// Auto-generated by build.ts - do not edit\nexport const snapshot = ${modelsData}\n`,
 )
-console.log("Generated models-snapshot.ts")
+await Bun.write(
+  path.join(dir, "src/provider/models-snapshot.d.ts"),
+  `// Auto-generated by build.ts - do not edit\nexport declare const snapshot: Record<string, unknown>\n`,
+)
+console.log("Generated models-snapshot.js")
 
 // Load migrations from migration directories
 const migrationDirs = (
diff --git a/packages/opencode/src/provider/models.ts b/packages/opencode/src/provider/models.ts
index bae3317846..30901ea74f 100644
--- a/packages/opencode/src/provider/models.ts
+++ b/packages/opencode/src/provider/models.ts
@@ -89,7 +89,7 @@ export namespace ModelsDev {
     const result = await Filesystem.readJson(Flag.OPENCODE_MODELS_PATH ?? filepath).catch(() => {})
     if (result) return result
     // @ts-ignore
-    const snapshot = await import("./models-snapshot")
+    const snapshot = await import("./models-snapshot.js")
       .then((m) => m.snapshot as Record<string, unknown>)
       .catch(() => undefined)
     if (snapshot) return snapshot