Paid Broadcasts

By default, all bots are able to broadcast up to 30 messages per second to their users. Developers can increase this limit by enabling Paid Broadcasts in @BotFather - allowing their bot to broadcast up to 1000 messages per second.

Each message broadcasted over the free amount of 30 messages per second incurs a cost of 0.1 Stars per message, paid with Telegram Stars from the bot's balance. In order to use this feature, a bot must have at least 10,000 Stars on its balance.

Bots with increased limits are only charged for messages that are broadcasted successfully.