diff --git a/apps/worker/worker_app/tasks/viral_video.py b/apps/worker/worker_app/tasks/viral_video.py
index 8adc448c2..34d3fd54d 100644
--- a/apps/worker/worker_app/tasks/viral_video.py
+++ b/apps/worker/worker_app/tasks/viral_video.py
@@ -1615,13 +1615,26 @@ def _settle_viral_video(job: ViralVideoJob, usage: dict | None) -> None:
             getattr(job, "video_resolution", "720p") or "720p",
             getattr(job, "video_ratio", "9:16") or "9:16",
         )
+        fps = 24
+        duration = int(getattr(job, "duration", 15) or 15)
+        est_tokens = duration * w * h * fps // 1024
         actual_tokens = None
         if isinstance(usage, dict):
             at = usage.get("completion_tokens")
             if isinstance(at, (int, float)) and at > 0:
                 actual_tokens = int(at)
+        diff_pct = None
+        if actual_tokens and est_tokens > 0:
+            diff_pct = (actual_tokens - est_tokens) * 100.0 / est_tokens
+        logger.info(
+            "[爆款视频] tokens估算vs实际 job_id=%s duration=%s %sx%s model=%s est=%s actual=%s diff=%.1f%%",
+            job.id, duration, w, h,
+            getattr(job, "video_model", "seedance-2.5"),
+            est_tokens, actual_tokens,
+            diff_pct if diff_pct is not None else 0.0,
+        )
         actual_credits = calculate_viral_video_credits(
-            int(getattr(job, "duration", 15) or 15),
+            duration,
             w,
             h,
             getattr(job, "video_model", "") or "seedance-2.5",