Bot API 10.3

🔁 Button Revolution
• Buttons can now be placed right inside any rich message – with multiple native styles and custom alignment.
• Out of the box, these buttons support callbacks, Mini Apps, Login URLs, copying text and more.
• Bots can now mark inline buttons as disabled.

👻 Ephemeral Messages
• Bots can now replace their messages with an ephemeral overlay, then edit it with rich content or newly uploaded media. This unlocks rich, personalized flows and responses running in a single message.

💪 Rich Messages
• Bots can now attach documents to rich messages and more easily embed media – including previously uploaded files.
• Rich Messages now support expandable quote blocks and compact tables.

🦀 AI Agents
• Bots now support a native Stop button for streamed drafts and can optionally preserve partial responses.

• And more, see the full changelog for details:

https://core.telegram.org/bots/api-changelog#august-24-2026