diff --git a/README.md b/README.md
index fb4e1a8..613c2fd 100644
--- a/README.md
+++ b/README.md
@@ -520,6 +520,11 @@ TypeScript >= 5.0 is supported.
 
 Version 0.38 drops CommonJS and TypeScript 4 support. Use ESM and TypeScript 5 or newer.
 
+Two nested response aliases now match their generated container types:
+
+- `InputItem.InputMessage.ContentPartArray` is the full content array, not one content part.
+- `ResponsesUsage.ToolCallsDetails` is the full per-tool record, not one tool's details.
+
 The following runtimes are supported:
 
 - Web browsers (Up-to-date Chrome, Firefox, Safari, Edge, and more)
diff --git a/e2e/typescript-5-compat.mts b/e2e/typescript-5-compat.mts
index 4908c33..e751f13 100644
--- a/e2e/typescript-5-compat.mts
+++ b/e2e/typescript-5-compat.mts
@@ -1,6 +1,11 @@
 // oxlint-disable no-restricted-imports -- Verify packaged public entrypoints.
 import Perplexity, { APIError, type ClientOptions } from '@perplexity-ai/perplexity_ai';
+import type { Chat as AsyncChat } from '@perplexity-ai/perplexity_ai/resources/async/chat/chat.mjs';
+import type { Completions as AsyncCompletions } from '@perplexity-ai/perplexity_ai/resources/async/chat/completions.mjs';
+import type { Sessions } from '@perplexity-ai/perplexity_ai/resources/browser/sessions.mjs';
+import type { Completions } from '@perplexity-ai/perplexity_ai/resources/chat/completions.mjs';
 import type { CompletionCreateParamsBase } from '@perplexity-ai/perplexity_ai/resources/chat/completions.mjs';
+import type { Files } from '@perplexity-ai/perplexity_ai/resources/responses/files.mjs';
 import type { ResponseCreateParamsBase } from '@perplexity-ai/perplexity_ai/resources/responses/responses.mjs';
 
 const options: ClientOptions = {
@@ -14,6 +19,26 @@ const completion: CompletionCreateParamsBase = {
 };
 const response: ResponseCreateParamsBase = { input: 'Hello' };
 
+type LegacyNamespaceAliases = [
+  AsyncChat.Completions,
+  AsyncChat.CompletionCreateResponse,
+  AsyncChat.CompletionListResponse,
+  AsyncChat.CompletionGetResponse,
+  AsyncChat.CompletionCreateParams,
+  AsyncChat.CompletionGetParams,
+  AsyncCompletions.CompletionCreateResponse,
+  AsyncCompletions.CompletionListResponse,
+  AsyncCompletions.CompletionGetResponse,
+  AsyncCompletions.CompletionCreateParams,
+  AsyncCompletions.CompletionGetParams,
+  Sessions.SessionCreateParams,
+  Completions.CompletionCreateParams,
+  Completions.CompletionCreateParamsNonStreaming,
+  Completions.CompletionCreateParamsStreaming,
+  Files.FileContentParams,
+];
+
 void client.chat.completions.create(completion);
 void client.responses.create(response);
 void APIError;
+void ({} as LegacyNamespaceAliases);
diff --git a/src/resources/async/chat/chat.ts b/src/resources/async/chat/chat.ts
index 8ba8382..0917d85 100644
--- a/src/resources/async/chat/chat.ts
+++ b/src/resources/async/chat/chat.ts
@@ -1,4 +1,3 @@
 import { Async } from '../../../generated/api.js';
 
-export const Chat = Async.Chat;
-export type Chat = InstanceType<typeof Chat>;
+export import Chat = Async.Chat;
diff --git a/src/resources/async/chat/completions.ts b/src/resources/async/chat/completions.ts
index 774e8a4..17de7ea 100644
--- a/src/resources/async/chat/completions.ts
+++ b/src/resources/async/chat/completions.ts
@@ -1,7 +1,6 @@
 import { Async } from '../../../generated/api.js';
 
-export const Completions = Async.Chat.Completions;
-export type Completions = InstanceType<typeof Completions>;
+export import Completions = Async.Chat.Completions;
 export type CompletionCreateParams = Async.Chat.CompletionCreateParams;
 export type CompletionCreateResponse = Async.Chat.CompletionCreateResponse;
 export type CompletionGetParams = Async.Chat.CompletionGetParams;
diff --git a/src/resources/browser/sessions.ts b/src/resources/browser/sessions.ts
index 201fb0c..8e4a393 100644
--- a/src/resources/browser/sessions.ts
+++ b/src/resources/browser/sessions.ts
@@ -1,5 +1,4 @@
 import { Browser } from '../../generated/api.js';
 
-export const Sessions = Browser.Sessions;
-export type Sessions = InstanceType<typeof Sessions>;
+export import Sessions = Browser.Sessions;
 export type SessionCreateParams = Browser.SessionCreateParams;
diff --git a/src/resources/chat/completions.ts b/src/resources/chat/completions.ts
index db9cfe4..bcbb198 100644
--- a/src/resources/chat/completions.ts
+++ b/src/resources/chat/completions.ts
@@ -1,7 +1,6 @@
 import { Chat } from '../../generated/api.js';
 
-export const Completions = Chat.Completions;
-export type Completions = InstanceType<typeof Completions>;
+export import Completions = Chat.Completions;
 export type CompletionCreateParams = Chat.CompletionCreateParams;
 export type CompletionCreateParamsBase = Omit<CompletionCreateParams, 'stream'>;
 export type CompletionCreateParamsNonStreaming = Chat.CompletionCreateParamsNonStreaming;
diff --git a/src/resources/responses/files.ts b/src/resources/responses/files.ts
index e4d6ae7..f8730b7 100644
--- a/src/resources/responses/files.ts
+++ b/src/resources/responses/files.ts
@@ -1,5 +1,4 @@
 import { Responses } from '../../generated/api.js';
 
-export const Files = Responses.Files;
-export type Files = InstanceType<typeof Files>;
+export import Files = Responses.Files;
 export type FileContentParams = Responses.FileContentParams;