diff --git a/typescript/src/chat.ts b/typescript/src/chat.ts
index 78f24d0..fdc0824 100644
--- a/typescript/src/chat.ts
+++ b/typescript/src/chat.ts
@@ -16,15 +16,16 @@ const messageSchema = z.object({
 });
 
 export const chatRequestSchema = z.object({
-      messages: z.array(messageSchema),
-      temperature: z.number().optional(),
-      max_tokens: z.number().optional(),
+  messages: z.array(messageSchema),
+  temperature: z.number().optional(),
+  max_tokens: z.number().optional(),
 });
 type ChatRequest = z.infer<typeof chatRequestSchema>;
 
 interface ChatResponse {
   model: string;
   content: string;
+  confidence?: number;
 }
 
 export interface Chunk {
@@ -45,29 +46,36 @@ export async function getChatResponse(
 
   return {
     model: "gpt-4o",
+    confidence: response.confidence,
     content,
   };
 }
 
-export async function streamChatResponse(
-  chatRequest: ChatRequest
-): Promise<{ model: string; stream: AsyncIterable<Chunk> }> {
+export async function streamChatResponse(chatRequest: ChatRequest): Promise<{
+  model: string;
+  confidence?: number;
+  stream: AsyncIterable<Chunk>;
+}> {
   try {
-    const stream = await openAiChatCompletion({
+    const { confidence, stream } = await openAiChatCompletion({
       model: "gpt-4o",
       messages: chatRequest.messages,
       stream: true,
       temperature: chatRequest.temperature,
       max_tokens: chatRequest.max_tokens,
     });
-    return { model: "gpt-4o", stream: chunksFromOpenAiStream(stream) };
+    return {
+      model: "gpt-4o",
+      confidence,
+      stream: chunksFromOpenAiStream(stream),
+    };
   } catch (e) {
     console.warn("Error streaming chat response from OpenAI", e);
 
     const systemMessage = chatRequest.messages.find(
       (message) => message.role === "system"
     );
-    const iterator = await bedrockChatCompletion({
+    const { confidence, stream } = await bedrockChatCompletion({
       modelId: "anthropic.claude-3-sonnet-20240229-v1:0",
       system: systemMessage
         ? [
@@ -90,11 +98,12 @@ export async function streamChatResponse(
       inferenceConfig: {
         temperature: chatRequest.temperature,
         maxTokens: chatRequest.max_tokens,
-      }
+      },
     });
     return {
       model: "claude-3-sonnet",
-      stream: chunksFromBedrockStream(iterator),
+      confidence,
+      stream: chunksFromBedrockStream(stream),
     };
   }
 }
diff --git a/typescript/src/stubs/stub-bedrock-client.ts b/typescript/src/stubs/stub-bedrock-client.ts
index c247f1d..a19a748 100644
--- a/typescript/src/stubs/stub-bedrock-client.ts
+++ b/typescript/src/stubs/stub-bedrock-client.ts
@@ -18,8 +18,12 @@ async function* stubGenerator(): AsyncGenerator<ConverseStreamOutput> {
   }
 }
 
-export function bedrockChatCompletion(
-  _: ConverseStreamCommandInput
-): Promise<AsyncIterable<ConverseStreamOutput>> {
-  return Promise.resolve(stubGenerator());
+export function bedrockChatCompletion(_: ConverseStreamCommandInput): {
+  confidence: number;
+  stream: AsyncIterable<ConverseStreamOutput>;
+} {
+  return {
+    confidence: (Math.floor(Math.random() * 10) + 1) / 10,
+    stream: stubGenerator(),
+  };
 }
diff --git a/typescript/src/stubs/stub-openai-client.ts b/typescript/src/stubs/stub-openai-client.ts
index 67d7bdd..1e49754 100644
--- a/typescript/src/stubs/stub-openai-client.ts
+++ b/typescript/src/stubs/stub-openai-client.ts
@@ -3,18 +3,22 @@ import { Stream } from "openai/streaming";
 
 const chunks = ["Hello ", "from ", "OpenAI!"];
 
-async function* stubGenerator(model: string): AsyncGenerator<OpenAI.Chat.ChatCompletionChunk> {
+async function* stubGenerator(
+  model: string
+): AsyncGenerator<OpenAI.Chat.ChatCompletionChunk> {
   for (const [index, output] of chunks.entries()) {
     yield {
       id: index.toString(),
-      choices: [{
-        index: 0,
-        delta: {
-          role: "assistant",
-          content: output,
+      choices: [
+        {
+          index: 0,
+          delta: {
+            role: "assistant",
+            content: output,
+          },
+          finish_reason: null,
         },
-        finish_reason: null,
-      }],
+      ],
       model: model,
       object: "chat.completion.chunk",
       created: Date.now(),
@@ -24,6 +28,12 @@ async function* stubGenerator(model: string): AsyncGenerator<OpenAI.Chat.ChatCom
 
 export function openAiChatCompletion(
   input: OpenAI.Chat.ChatCompletionCreateParamsStreaming
-): Promise<Stream<OpenAI.Chat.ChatCompletionChunk>> {
-  return Promise.resolve(new Stream(() => stubGenerator(input.model), new AbortController()));
+): {
+  confidence: number;
+  stream: Stream<OpenAI.Chat.ChatCompletionChunk>;
+} {
+  return {
+    confidence: (Math.floor(Math.random() * 10) + 1) / 10,
+    stream: new Stream(() => stubGenerator(input.model), new AbortController()),
+  };
 }