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Clone your voice turns on with one payment. Open Settings > Voice (or click Clone your voice at the top of Campaigns) and click Turn it on for $20. That’s a one-time payment with 500 voice note credits included (1 credit = 30 seconds, valid for 3 months from the payment). It turns on for your account as soon as the payment goes through: back from the checkout the page says Payment received: it turns on for your account in a moment. and then shows Clone your voice. Only owners and admins can pay.
A Message step can send a LinkedIn voice note in your own voice to every contact, with their own name and details. You record your voice once; Kerux makes a copy of it (a “cloned voice”), and each contact’s note is spoken from a text you write, with variables like {{contact.first_name}} and {{contact.company}}. Only your own voice, with your consent. Never record or clone someone else.

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1. Clone your voice (Settings > Voice)

1

Open Settings > Voice

Click Settings > Voice.
2

Record yourself

Click Record and speak naturally for 1 to 2 minutes (at least 30 seconds), somewhere quiet. For a text to read, open Not sure what to say? Read this and read it aloud. Click Stop, listen, then Use this recording (or Record again).
3

Agree and create

Tick This is my own voice and I agree to clone it., then click Create my voice. Kerux keeps who agreed and when.
The page then says Your voice is ready, with when it was cloned and when you agreed. The recording itself is sent to the voice service once and Kerux doesn’t keep it.
  • One voice per person in each workspace. To make a new one, click Delete my voice first.
  • Delete my voice deletes it in Kerux and at the voice service. Voice notes in your voice then wait until you make a new one.
  • Recording works in Chrome, Safari and Edge, on a computer or a phone.

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2. Add a voice note in your voice to a Message step

1

Open the Message step

In your campaign, open a Message step. Under Voice note, pick In my voice (instead of Recorded).
2

Write what it says

In What the voice note says, write the text, with variables: for example Hi {{contact.first_name}}, I saw {{contact.company}} is hiring. Worth a quick chat? About 900 characters fill a minute (the most LinkedIn allows).
3

Listen before you launch

Click Listen as a contact: Kerux says the text for the campaign’s first contact, in your voice. Previews are free (up to 20 a day per workspace).
The step’s text box stays optional: with text, the voice note goes with it; without text, only the voice note goes. Whose voice? Each note is spoken in the voice of the person who connected the LinkedIn account that sends it. If that person hasn’t cloned their voice yet, those contacts wait (see below).

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When the campaign runs

For each contact, right before the message goes, Kerux:
  1. fills in the variables for that contact. If one is empty and has no fallback, the contact waits with the usual missing-data message: never a voice note with a blank. Fill in the contact (or set a fallback) and it goes on.
  2. speaks the text in the voice, once, and keeps the audio. If the message has to be tried again, the same audio is sent: never spoken or charged twice.
  3. sends it as a LinkedIn voice note, with the same safety as any message: at most once, checked when LinkedIn’s answer is unclear.
Each contact’s history shows Voice note made in the sender’s voice and Voice note in the sender’s voice sent.

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Voice note credits

Voice notes use their own credits, apart from AI credits and search credits:
  • 1 credit = 30 seconds of voice note. A note up to 30 seconds (about 450 characters) takes 1 credit; up to a minute (about 900 characters) takes 2. Credits are taken only when the note is made.
  • If it can’t be made (the voice service fails), the credits come back and Kerux tries again later.
  • Previews (Listen as a contact) are free.
  • Credits expire 3 months after you buy them. Credits not used by then are lost and aren’t refunded. The oldest credits are used first.
  • Buy them in Settings > Billing, card Voice notes (500 credits for US$20). The card shows your balance, how many credits expire next and when, and every movement, including credits that expired.

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When something waits

Before you launch, the launch check warns when a sending account’s person has no cloned voice yet, and when the campaign may need more voice note credits than you have. Fix opens Settings > Voice or Billing.

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In the API

GET /v1/voice (your voice and credits), GET /v1/voice/credits, and POST /v1/workflows/{id}/voice-preview (Listen as a contact). Cloning or deleting your voice is only done by you, signed in to Kerux (Settings > Voice): POST /v1/voice and DELETE /v1/voice answer 403 to an API key or an AI tool using one, so nobody can clone or remove a voice in your name from outside. A Message step carries the text as config.clonedVoice.text. See the API reference.