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This page lists what is decided about Flow Messaging’s pricing. Prices and what each paid plan includes are not decided yet; building and testing in the sandbox with a test key is free. Message content and media are kept 30 days by default; retention will be set per plan.

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What to know now

  • Test mode is free, within the sandbox allowance: without an account 1 contact and 50 messages in total on the Telegram sandbox (the key expires after 7 days); signed in with GitHub, 3 contacts and 100 messages each, shared by all your apps. Only messages your agent sends count. See Keys and sign-in.
  • Test keys take one call, with no account: curl -X POST https://api.flow.engineer/v1/sandbox/keys. Signed in, you make live keys (fk_live_...) in the dashboard and go live on Telegram with your own bot. iMessage lines are arranged with the Flow team.
  • WhatsApp is not available yet. When it is, WhatsApp’s own per-message fees (charged by Meta) are passed through.
  • Billing is not live yet; nothing is charged today.
Questions about pricing or volume: ask the Flow team.