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Head to head · Inbound messaging · October 2026 research run

Telegram Bot API vs WhatsApp Business Platform (Cloud API)

WhatsApp Business Platform (Cloud API) scores 67.1 (B) on agent readiness against Telegram Bot API's 43 (E), and leads in 5 of 7 scored categories. Both do inbound messaging.

Best SMS, WhatsApp and messaging APIs for AI agents · All 91 messaging comparisons

Telegram Bot APITelegram Messenger Inc. · HTTP API E43/100#885 of 950 WhatsApp Business Platform (Cloud API)Meta Platforms, Inc. · HTTP API B67.1/100#264 of 950

Which one, for what

Telegram Bot API E

Good for An agent that talks to people who use Telegram, with free sends and long polling that needs no public server.

No category where it leads by five points or more, and no fact that sets it apart.

Watch for

No OpenAPI document, llms.txt or official SDK was found. The contract is one HTML reference page of about 860 KB

WhatsApp Business Platform (Cloud API) B

Good for The direct route to WhatsApp for a business messaging its own customers, with no reseller fee.

Ahead on

  • Reliability, 80 against 40
  • Schema & documentation, 82 against 44
  • Agent ergonomics, 67 against 48
  • Security & auth, 67 against 35
  • Transparency & trust, 82 against 64

Watch for

A person has to create a Meta account, a developer app, a business portfolio and a system user in a browser before any token exists

Score by category

CategoryWeight this runTelegram Bot APIWhatsApp Business Platform (Cloud API)Edge
Reliability16%204080WhatsApp Business Platform (Cloud API) +40
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.24482WhatsApp Business Platform (Cloud API) +38
Agent ergonomics13%16.24867WhatsApp Business Platform (Cloud API) +19
Security & auth14%17.53567WhatsApp Business Platform (Cloud API) +32
Payments & pricing10%12.54040even
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.83834Telegram Bot API +4
Transparency & trust7%8.86482WhatsApp Business Platform (Cloud API) +18
Negative events≤1500
Total43 · E67.1 · B

Facts side by side

FactTelegram Bot APIWhatsApp Business Platform (Cloud API)
KindHTTP APIHTTP API
VendorTelegram Messenger Inc.Meta Platforms, Inc.
Hosted endpointhttps://api.telegram.orghttps://graph.facebook.com
TransportsHTTPHTTP
AuthAPI keyOAuth
PricingFreePay per use
x402nono
LicenceProprietary hosted service under the Telegram Bot Platform Developer Terms of Service. The Bot API server source in tdlib/telegram-bot-api is BSL-1.0Proprietary service under the Meta Terms for WhatsApp Business Platform. The OpenAPI document in facebook/openapi is MIT
Read-only variant documentednono
llms.txtnoyes
Last release2026-08-242026-08-11
Terms last updatedno date givencouldn't be read
Privacy policy last updated2024-06-012025-08-22
Customer content may train modelsnot found in the textcouldn't be read
Terms restrict automated accessnot found in the textcouldn't be read
Terms restrict benchmarkingnot found in the textcouldn't be read
Terms or service can change without noticeyescouldn't be read
Arbitration or class-action waivernot found in the textcouldn't be read
Popularity4.5k starsnone

Verdicts

Telegram Bot API

Telegram's first-party bot interface is free, needs no card and documents 185 methods on one page with a dated changelog and numeric send limits. No OpenAPI document, status page, SLA or idempotency key was found, one token controls the whole bot and travels in the URL, and a person must create the bot in a chat with @BotFather.

WhatsApp Business Platform (Cloud API)

The first-party WhatsApp API has a public OpenAPI document, Markdown docs with llms.txt, numeric rate limits and a test number that sends without a payment method. Setup needs a person in three Meta dashboards, no idempotency key was found for sends, and Meta's terms restrict general-purpose AI assistants on the platform.

Before you call either

Telegram Bot API

  1. Send POST https://api.telegram.org/bot<token>/sendMessage with chat_id and text. Keep the token out of logs, because it is part of the URL.
  2. On HTTP 429 wait the parameters.retry_after seconds before retrying. Stay under one message a second per chat and 20 a minute per group.
  3. Call getUpdates with offset set to the last update_id plus one, or the same updates return. Updates are kept for at most 24 hours.
  4. A retried send can post twice, as there is no idempotency key. Record the returned message_id before retrying after a timeout.
  5. In groups the bot sees only commands and replies unless privacy mode is disabled in @BotFather or the bot is an admin.

WhatsApp Business Platform (Cloud API)

  1. Check when the user last wrote. Free-form messages are accepted only within 24 hours of the user's last message. After that, send an approved template.
  2. Record the message id from each send and match it to messages webhook statuses. Many failures arrive only by webhook, and no idempotency key was found.
  3. On error 130429 or 131056 wait and retry. Meta's guidance for the per-recipient limit is 4^X seconds, with X rising by one per failure.
  4. Verify X-Hub-Signature-256 with the app secret on every webhook, and deduplicate, because failed deliveries are retried for up to 7 days.
  5. Request health_status on the phone number before a campaign to see whether the app, business, account, number and template can send.

Questions

Which is better for AI agents, Telegram Bot API or WhatsApp Business Platform (Cloud API)?

WhatsApp Business Platform (Cloud API) scores 67.1 (B) on agent readiness against Telegram Bot API's 43 (E), and leads in 5 of 7 scored categories.

Do Telegram Bot API and WhatsApp Business Platform (Cloud API) need an API key?

Telegram Bot API needs an API key. WhatsApp Business Platform (Cloud API) uses an OAuth sign-in.

Can an agent call Telegram Bot API and WhatsApp Business Platform (Cloud API) without installing anything?

Yes. Telegram Bot API has a hosted endpoint at https://api.telegram.org and WhatsApp Business Platform (Cloud API) at https://graph.facebook.com.

Other comparisons with Telegram Bot API or WhatsApp Business Platform (Cloud API)

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