Is there an AI that tells sales reps what to say on live calls?
Updated
Yes. Real-time AI call guidance (also called live call coaching or agent assist) listens to the call, recognizes moments like an objection, and puts a suggested answer on the rep's screen within the conversation, while the prospect hears only the rep. Della Live does this for phone sales teams using your own script and your best answers. Balto, Cresta, Trellus, Aircall AI Assist Pro, Revenue.io and Abstrakt offer live guidance too, mostly for contact centers or as part of a dialer or phone system.
How it works
- It listens. The tool transcribes the call as it happens.
- It recognizes the moment. When the prospect objects (“just send me an email”, “we already have someone”), the tool spots it.
- It shows the answer. Your best answer for that objection appears on the rep's screen, short enough to say out loud.
- The rep says it in their own voice. The prospect only hears your rep. The AI never speaks on the call.
What to look for
- Speed. The answer has to appear while the moment is still live. Try it on a real call during the demo.
- Your words, not generic ones. Ask where the suggested lines come from. Della's come from your script and your best rep's answers.
- Short enough to say. A paragraph on screen is useless mid-call. Look for one line the rep can say out loud.
- Your phone setup. Confirm it works on the phone system or dialer your reps already use.
- Recording consent. Live guidance needs the call audio. Plan your recording notice before you roll out.
How the options compare
| Tool | What it is | Help during the live call | AI practice | Scores real calls | Published pricing |
|---|---|---|---|---|---|
| Della | AI sales coach for phone sales teams: Della Live puts your best answer on the rep's screen during the call; Della Practice is an AI voice prospect reps rehearse your real objections with | Yes (Della Live, built from your script) | Yes (Della Practice, built from your real objections) | Yes, every call, automatically, on every plan | $199 / $129 / $279 per rep per month on a 12-month contract; 5-rep minimum; every plan includes call scoring |
| Balto | AI platform for contact centers: real-time Agent Assist, AI QA scoring of every interaction, coaching, AI voice agents | Yes (Agent Assist: phrases, script reminders, objection rebuttals) | Not described on their site | Yes (AI QA scoring of every interaction) | Not published (demo request) |
| Cresta | “The AI operating system for customer experience”: Agentic Assist for live agents, conversation intelligence, quality management, AI agents | Yes (Agentic Assist) | Not described on their site | Quality management is listed on their site | Not published (book a demo) |
| Trellus | Power and parallel dialer that runs inside your CRM, with live AI coaching, AI practice bots and a virtual salesfloor | Yes (live AI coaching; listed under the custom-priced Business plan) | Yes (AI practice bots) | Call analytics listed; call scoring not described | Power $99.99/mo and Power + Parallel $149.99/mo for individuals; Business (teams) custom |
| Aircall AI Assist Pro | An add-on to Aircall phone plans: live transcription, live prompts and in-call playbooks (BANT, SPICED, MEDDIC or your own) | Yes (live prompts and playbooks) | Not described on the product page | Not described on the product page | $49 per user per month, billed annually, on top of an Aircall plan |
| Revenue.io | A revenue platform built for Salesforce teams: dialing, sales engagement, conversation intelligence, Moments live guidance, coaching | Yes (Moments) | Not described on their homepage | Conversation intelligence listed; scoring not described on their homepage | Not shown on their homepage |
| Abstrakt | Real-time agent assist and automated QA for contact centers; a TCN company | Yes (recommended responses during the call) | Not described on their site | Automated QA is listed on their site | Not published |
Competitor details are summarized from each company’s own website, read October 21, 2026: Balto (balto.ai), Cresta (cresta.com), Trellus (trellus.ai and trellus.ai/pricing), Aircall AI Assist Pro (aircall.io/products/ai-assist-pro), Revenue.io (revenue.io), Abstrakt (abstrakt.ai). Features and prices change; check their sites. We make Della, so weigh our pick accordingly.
Where Della fits, and where it doesn’t
Della is a good fit for
- Reps who freeze on the same objections every week
- New reps on their first live calls
- Managers who can't listen to every call
- Teams with a written script and recorded calling lines
Della is not the right fit for
- Teams that want the AI to make the calls itself (Della Live coaches your rep; it never talks to prospects)
- Teams without a script or any recorded calls to learn from yet (start with the free objection guide)
- Video-meeting sales: Della Live is built for phone calls
- Teams under 5 reps
FAQ
Can the prospect hear the AI?
No. Della Live shows answers on your rep's screen only. The prospect hears your rep.
Will reps sound robotic reading from a screen?
Not if the lines are short and in your team's own words. Della shows one line built from your script, and Della Practice lets reps rehearse those answers until they sound natural.
Does it replace my reps?
No. Della suggests; people sell. Your reps make the calls and close the deals.
What does it need to work?
Access to the call audio on your team's recorded calling line, plus your script and objections. We confirm your phone system or dialer with you before you start.
How fast is setup?
Most teams are set up in about a day. We load your script, your objections and your best answers.
See Della on a real objection.
Type any objection your reps hear and see the answer Della Live would put on their screen. Free, no signup.
Try to stump DellaBook a demo →