diff --git a/app/workers/deep_summary_worker.py b/app/workers/deep_summary_worker.py
index 5eddc4b..08ff909 100644
--- a/app/workers/deep_summary_worker.py
+++ b/app/workers/deep_summary_worker.py
@@ -121,8 +121,13 @@ async def process(document_id: int, session: AsyncSession) -> None:
         try:
             # parse_json_response 는 중첩 JSON (entities_confirmed) 을 최외곽으로 오인하는
             # 케이스가 있어 — deep_summary 응답에서 자주 발생 — 최외곽 추출 전용 helper 사용.
-            parsed = _parse_outermost_json(raw) or parse_json_response(raw) or {}
-            deep_out = DeepSummaryOutput.model_validate(parsed)
+            parsed = _parse_outermost_json(raw) or parse_json_response(raw)
+            if not parsed:
+                # 잘린 응답 fallback — field-level regex 로 detail/tldr/inconsistencies 추출
+                parsed = _regex_extract_fields(raw)
+            deep_out = DeepSummaryOutput.model_validate(parsed or {})
+            if not deep_out.detail and parsed and parsed.get("_fallback"):
+                logger.info(f"[deep] id={document_id} regex fallback parsed keys={list(parsed.keys())}")
         except (ValidationError, ValueError, TypeError) as exc:
             parse_error = f"parse:{type(exc).__name__}"
             logger.warning(f"[deep] JSON 파싱/검증 실패 id={document_id}: {exc}")
@@ -248,6 +253,51 @@ def _parse_outermost_json(raw: str) -> dict | None:
     return None
 
 
+def _regex_extract_fields(raw: str) -> dict:
+    """JSON parse 실패 시 field-level regex 로 detail/tldr/mode/inconsistencies 추출.
+
+    응답이 잘렸거나 중간에 문자열이 끊긴 경우에도 앞쪽에 완결된 필드는 건진다.
+    `"detail": "…"` 처럼 key-value 쌍을 개별 매칭.
+    """
+    def _str_field(key: str) -> str | None:
+        m = re.search(rf'"{key}"\s*:\s*"((?:[^"\\]|\\.)*)"', raw, re.DOTALL)
+        if not m:
+            return None
+        try:
+            # JSON string escape 복원 (\n, \\, \" 등)
+            return json.loads('"' + m.group(1) + '"')
+        except json.JSONDecodeError:
+            return m.group(1)
+
+    def _arr_field(key: str) -> list | None:
+        # 단순 문자열 배열만 지원 — bullets / inconsistencies_desc 등
+        m = re.search(rf'"{key}"\s*:\s*(\[[^\]]*\])', raw, re.DOTALL)
+        if not m:
+            return None
+        try:
+            return json.loads(m.group(1))
+        except json.JSONDecodeError:
+            return None
+
+    out: dict = {"_fallback": True}
+    mode = _str_field("mode")
+    if mode:
+        out["mode"] = mode
+    tldr = _str_field("tldr")
+    if tldr:
+        out["tldr"] = tldr
+    detail = _str_field("detail")
+    if detail:
+        out["detail"] = detail
+    bullets = _arr_field("bullets")
+    if bullets is not None:
+        out["bullets"] = bullets
+    inc = _arr_field("inconsistencies")
+    if inc is not None:
+        out["inconsistencies"] = inc
+    return out
+
+
 def _filter_inconsistencies(items: list) -> list[dict]:
     """허용 kind 목록 (safety/news 도메인 한정) 만 통과시킨다.