diff --git a/packages/ai/src/api/bedrock-converse-stream.lazy.ts b/packages/ai/src/api/bedrock-converse-stream.lazy.ts
index f9b30b35f..b0530a1fb 100644
--- a/packages/ai/src/api/bedrock-converse-stream.lazy.ts
+++ b/packages/ai/src/api/bedrock-converse-stream.lazy.ts
@@ -5,11 +5,13 @@ import { lazyApi } from "./lazy.ts";
  * Loads the bedrock implementation through a variable specifier so bundlers
  * (browser smoke, Bun compile) cannot follow the import into the Node-only
  * AWS SDK. The `.ts`/`.js` rewrite keeps the trick working from both source
- * and built output.
+ * and built output. The specifier is resolved against this module's URL, not
+ * left relative: a bundler inlining this file (Chord's worker base) keeps the
+ * variable import, which would otherwise resolve against the bundle's location.
  */
 const importNodeOnlyApi = (specifier: string): Promise<unknown> => {
 	const runtimeSpecifier = import.meta.url.endsWith(".js") ? specifier.replace(/\.ts$/, ".js") : specifier;
-	return import(runtimeSpecifier);
+	return import(new URL(runtimeSpecifier, import.meta.url).href);
 };
 
 let bedrockModuleOverride: ProviderStreams | undefined;
diff --git a/packages/ai/src/auth/oauth/load.ts b/packages/ai/src/auth/oauth/load.ts
index 839fe3152..be63e8acf 100644
--- a/packages/ai/src/auth/oauth/load.ts
+++ b/packages/ai/src/auth/oauth/load.ts
@@ -4,11 +4,14 @@ import type { OAuthAuth } from "../types.ts";
  * Loads an OAuth flow module through a variable specifier so bundlers cannot
  * follow the import into Node-only flow code (`node:http` callback servers,
  * `node:crypto` PKCE). The `.ts`/`.js` rewrite keeps the trick working from
- * both source and built output.
+ * both source and built output. The specifier is resolved against this
+ * module's URL, not left relative: a bundler inlining this file (Chord's
+ * worker base) keeps the variable import, which would otherwise resolve
+ * against the bundle's location.
  */
 const importOAuthModule = (specifier: string): Promise<unknown> => {
 	const runtimeSpecifier = import.meta.url.endsWith(".js") ? specifier.replace(/\.ts$/, ".js") : specifier;
-	return import(runtimeSpecifier);
+	return import(new URL(runtimeSpecifier, import.meta.url).href);
 };
 
 type OAuthFlowLoaders = {