[Python] YouTube Data API v3 quota calculation - How the quota is calculated?

The documentation says that .list() commands should cost 1 quota, but in my script I only use .list() commands. However, the consumed quota does not match the expected number.

I tried with a simple version to check:

import googleapiclient.discovery
import time

API_KEY = "some_key"
VIDEO_ID = "some_video_id"

try:
youtube = googleapiclient.discovery.build("youtube", "v3", developerKey=API_KEY)

# Chamada inicial
video_request = youtube.videos().list(part="liveStreamingDetails", id=VIDEO_ID)
video_response = video_request.execute()
print("Call 1 - videos.list (2 quotas)")

live_chat_id = video_response["items"][0]["liveStreamingDetails"]["activeLiveChatId"]

for i in range(10): # Exemplo: 10 loops
live_chat_request = youtube.liveChatMessages().list(
liveChatId=live_chat_id,
part="snippet,authorDetails"
)
live_chat_request.execute()
print(f"Call {i+2} - liveChatMessages.list (1 quota)")
time.sleep(5)

except Exception as e:
print(f"Error: {e}")


I expected a cost of 12 quotas, but got 51. How can this be, if the cost should be 1 for each request? I just want some clarification of what is spending more then expected.

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