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# Campaigns, templates, OpenAI, Google sign-in

* **Calls**: **Campaigns** — call a contact list with a flow, with concurrency, call windows, an end time and per-contact outcomes; skipped contacts are previewed with reasons before you start. See [Campaigns](/calls/campaigns).
* **Calls**: Two-layer call status: the telephony leg (`status`) and the agent leg (`agentStatus`) reported separately. See [How a call works](/getting-started/how-a-call-works).
* **Builder**: **Flow templates** to start from; an **End Call** function for graceful termination; structured validation errors that name the field.
* **Builder**: OpenAI language models; Cartesia text-to-speech; ElevenLabs voice filtering; Soniox languages. Multi-provider STT/TTS per flow.
* **Contacts**: Import from CSV, JSON and vCard with phone-number normalisation and a country-code selector; tags with multi-tag filtering; export.
* **Telephony**: Caller ID on SIP calls; automatic carrier-edge selection from your carrier's location; timezone detection from phone numbers.
* **Billing**: Auto-recharge; Stripe-hosted payment methods and 3-D Secure; cost breakdown per call with cached and reasoning token pricing for every LLM provider; telephony billed at the carrier's actual per-call price.
* **Account**: Sign in with Google; organization invitations; personal and organization accounts.
* **Calls**: Faster first response — the greeting is prepared while the call connects; idle calls end automatically.