Telegram's Bot API is a developer's dream — free, well-documented, and feature-rich. You create a bot via BotFather in 30 seconds, get an API token, and start building. No business verification, no approval process, no fees.
WhatsApp Business API is the opposite: you must register a Meta Business account, verify your business (takes 1-4 weeks), apply for API access through a Business Solution Provider (BSP) like Twilio or 360dialog, and pay per conversation.
API feature comparison:
- Webhooks: Both platforms support webhooks. Telegram also supports long polling for simpler setups.
- Rich messages: Telegram supports inline keyboards (up to 100 buttons), custom reply keyboards, web apps embedded in the chat, inline bot queries, and file sharing up to 2GB. WhatsApp supports quick reply buttons (max 3), list messages (max 10 items), and template messages with limited dynamic content.
- User interaction: Telegram bots can be added to groups and channels, enabling community management. WhatsApp bots are strictly 1-to-1 conversations.
- Rate limits: Telegram allows 30 messages per second per bot. WhatsApp limits vary by BSP and quality rating (typically 1,000-100,000 business-initiated conversations per day after warm-up).
Bottom line: if your bot needs rich interactions, complex flows, or media-heavy content, Telegram is significantly more capable.