Airtable sometimes mentions 5 requests per second per base rate limit and sometimes just 5 requests per second; see the links below.

• 5 requests per second per base: https://airtable.com/developers/web/api/rate-limits
• 5 requests per second: https://support.airtable.com/docs/de/managing-api-call-limits-in-airtable#understanding-rate-limits

Can someone from Airtable shed some light on what's going on and what's the reliable source?