diff --git a/src/handlers/debugHandlers.ts b/src/handlers/debugHandlers.ts
index 08afc13..4df0f73 100644
--- a/src/handlers/debugHandlers.ts
+++ b/src/handlers/debugHandlers.ts
@@ -98,8 +98,11 @@ export const debug = onRequest({ timeoutSeconds: 300 }, async (req, res) => {
         return;
       }
       const model = typeof req.query.model === "string" ? req.query.model : undefined;
-      logger.info(`debug.chatProbe triggered (uid=${uid}, model=${model ?? "default"})`);
-      const result = await runChatProbe(uid, q, model);
+      const style = typeof req.query.style === "string" ? req.query.style : undefined;
+      logger.info(
+        `debug.chatProbe triggered (uid=${uid}, model=${model ?? "default"}, style=${style ?? "default"})`,
+      );
+      const result = await runChatProbe(uid, q, model, style);
       res.status(200).json(result);
       return;
     }
@@ -115,8 +118,11 @@ export const debug = onRequest({ timeoutSeconds: 300 }, async (req, res) => {
       }
       const format = typeof req.query.format === "string" ? req.query.format : "json";
       const model = typeof req.query.model === "string" ? req.query.model : undefined;
-      logger.info(`debug.chatProbeSheet triggered (uid=${uid}, model=${model ?? "default"})`);
-      const sheet = await runChatProbeBatch(uid, undefined, model);
+      const style = typeof req.query.style === "string" ? req.query.style : undefined;
+      logger.info(
+        `debug.chatProbeSheet triggered (uid=${uid}, model=${model ?? "default"}, style=${style ?? "default"})`,
+      );
+      const sheet = await runChatProbeBatch(uid, undefined, model, style);
       if (format === "md" || format === "markdown") {
         res.status(200).type("text/markdown; charset=utf-8").send(renderProbeMarkdown(sheet));
         return;
diff --git a/src/services/chatProbeService.ts b/src/services/chatProbeService.ts
index 070932f..f1a223e 100644
--- a/src/services/chatProbeService.ts
+++ b/src/services/chatProbeService.ts
@@ -56,6 +56,7 @@ export interface ChatProbeMeta {
   date: string;
   provider: string;
   model: string;
+  stylePack: string;
 }
 
 export interface ChatProbeSheet {
@@ -92,15 +93,18 @@ interface ProbeEnv {
 }
 
 /** uid 1명 기준으로 시스템 프롬프트·도구 컨텍스트·provider를 한 번만 준비한다. */
-async function buildProbeEnv(uid: string, modelOverride?: string): Promise<ProbeEnv> {
+async function buildProbeEnv(
+  uid: string,
+  modelOverride?: string,
+  styleOverride?: string,
+): Promise<ProbeEnv> {
   // 프로브는 검수 도구이므로 항상 최신 config를 읽는다 — 5분 캐시 우회.
   invalidateChatConfigCache();
   const base = await getChatConfig();
-  // A/B용 모델 오버라이드 — 모델만 바꾸고 나머지 provider 설정(공평 타임아웃 등)은 공유.
-  // 미지정 시 라이브 기본(lite).
-  const config: ChatConfig = modelOverride ?
-    { ...base, provider: { ...base.provider, model: modelOverride } } :
-    base;
+  // A/B 오버라이드 — 모델·스타일만 바꾸고 나머지 설정은 공유. 미지정 시 라이브 기본.
+  let config: ChatConfig = base;
+  if (modelOverride) config = { ...config, provider: { ...config.provider, model: modelOverride } };
+  if (styleOverride) config = { ...config, stylePack: styleOverride };
   const user = await getUser(uid);
   if (!user) {
     throw new HttpError(404, `user not found: ${uid}`, "USER_NOT_FOUND");
@@ -126,6 +130,7 @@ async function buildProbeEnv(uid: string, modelOverride?: string): Promise<Probe
       date,
       provider: config.provider.name,
       model: config.provider.model,
+      stylePack: config.stylePack,
     },
   };
 }
@@ -189,8 +194,9 @@ export async function runChatProbe(
   uid: string,
   message: string,
   modelOverride?: string,
+  styleOverride?: string,
 ): Promise<ProbeResult> {
-  const env = await buildProbeEnv(uid, modelOverride);
+  const env = await buildProbeEnv(uid, modelOverride, styleOverride);
   return runOne(env, message);
 }
 
@@ -199,8 +205,9 @@ export async function runChatProbeBatch(
   uid: string,
   prompts?: Array<{ q: string; expect?: string }>,
   modelOverride?: string,
+  styleOverride?: string,
 ): Promise<ChatProbeSheet> {
-  const env = await buildProbeEnv(uid, modelOverride);
+  const env = await buildProbeEnv(uid, modelOverride, styleOverride);
   const set = prompts ?? DEFAULT_PROBE_PROMPTS;
   // 순차 실행 — 동시 호출 부하로 인한 예산 초과 아티팩트를 피하고 실제 채팅(1건씩)에
   // 가깝게 둔다. 각 프로브가 25초 예산을 온전히 쓰도록 보장.
@@ -233,7 +240,7 @@ export function renderProbeMarkdown(sheet: ChatProbeSheet): string {
   lines.push(`- 생성: ${meta.generatedAt}`);
   lines.push(`- uid: \`${meta.uid}\` / 유저: ${meta.displayName}`);
   lines.push(`- 응원팀: ${meta.favoriteTeamName} (${meta.favoriteTeamCode ?? "—"})`);
-  lines.push(`- 모델: ${meta.provider}/${meta.model} / 기준 날짜(KST): ${meta.date}`);
+  lines.push(`- 모델: ${meta.provider}/${meta.model} / 스타일: ${meta.stylePack} / 기준 날짜(KST): ${meta.date}`);
   lines.push(
     `- 토큰 합계: 입력 ${sheet.totals.inputTokens.toLocaleString()} / ` +
     `출력 ${sheet.totals.outputTokens.toLocaleString()} / ` +