API Quota or Limit
Depends on plan
Commercial Use Rights
Depends on plan
Limited Audio Plays on Lower Tiers
Starter: 1/day, Premium: 5/day, Professional: 10/day
Limited Voice Customization on Free Tier
No Explicit Mention of Offline Use
No Mention of CMS Integrations
No Mention of File Format Support Beyond MP3
No Mention of Offline Use
Play Counting Rule
Only new text played is counted as a play. Long pages/articles might be counted as two plays.