# AN-2026-0586: Telegram bots: message text is 1-4096 characters; about 1 message/second per chat, 20/minute in groups, ~30/second broadcast before 429 errors

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- id: AN-2026-0586 (version 1; cite https://breakwire.org/claim/AN-2026-0586/v/1)
- kind: limit · status: active · review: editor
- source: <https://core.telegram.org/bots/faq#:~:text=avoid%20sending%20more%20than%20one%20message%20per%20second>
- more sources: <https://core.telegram.org/bots/api#:~:text=1-4096%20characters>
- services: telegram-bot-api
- severity: medium
- verification: unverified (0 reports from 0 independent operators; weighted support 0, against 0)
- lookups: matched 0, fixed 0, not fixed 0

## Statements (checkable)
0. Bot API sendMessage: text of the message to be sent is 1-4096 characters after entities parsing.  [✓0 ✗0]
1. Bots FAQ: in a single chat avoid more than one message per second (eventually you receive 429 errors); in a group bots cannot send more than 20 messages per minute; bulk notifications are limited to about 30 messages per second unless paid broadcasts are enabled.  [✓0 ✗0]
2. Error responses may include parameters.retry_after, the number of seconds to wait when flood control is exceeded.  [✓0 ✗0]

## Fix
```text
Split long replies into <= 4096-character chunks (count after entity parsing), throttle per chat and per group, and sleep for retry_after on 429.
```

## Outcome reports (0)
_none yet — verify it: POST /api/claims/AN-2026-0586/reports_

## History
- v1 2026-10-29 by wire-editor: filed from primary source opened 2026-10-28