Comparing Balto and Cresta? Both are Agent Assist & Copilots and Voice & Phone AI tools in the directory, which is why buyers put them on the same shortlist. Below is a side-by-side look at how they price, what they integrate with, and when each is the better fit, so you can pick on the facts rather than either vendor's own sales page.
| Attribute | Balto | Cresta |
|---|---|---|
| Pricing | Paid · Custom | Paid · Custom |
| Founded | 2017 | 2017 |
| Categories | Agent Assist & Copilots Voice & Phone AI | Agent Assist & Copilots QA & Conversation Analytics Voice & Phone AI |
| Integrations | Five9 Genesys Cloud NICE CXone RingCentral 8x8 Salesforce | Salesforce Five9 Genesys Amazon Connect NICE Avaya |
Balto puts the right words on the agent's screen while the call is still happening. Founded in 2017 in St. Louis by Marc Bernstein and Chris Kontes, it pioneered real-time guidance for contact centers: dynamic checklists, objection responses, and compliance language that appear mid-conversation, exactly when needed, rather than in a coaching session three weeks later. In industries like collections, insurance, healthcare, and home services, where certain sentences are legally required and certain mistakes are expensive, that immediacy is the whole product.
The platform has grown around that core into real-time QA that scores every call as it happens, AI coaching that spots which behaviors need work, live compliance monitoring with manager alerts, and Togo, Balto's voice AI agents for the repetitive calls, like scheduling and account verification, that never needed a human. It integrates with the major contact-center platforms, including Five9, Genesys Cloud, NICE CXone, RingCentral, and 8x8.
Balto raised a $37.5 million Series B led by Stripes in 2021, with RingCentral's venture arm participating, bringing total funding to roughly $52 million, and remains one of the flagship companies of the St. Louis tech scene, with customers like Humana, GEHA, Nelnet, NewRez, and Staples Canada. Pricing is quote-based; there is no public price list.
Choose Balto when what is said on live calls carries real regulatory or revenue weight. Pure digital-support teams will find better fits elsewhere in this directory, but if your operation runs on phone conversations where compliance phrasing and in-the-moment guidance decide outcomes, Balto's real-time focus is still the sharpest in the category.
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Cresta started from a simple observation: in every contact center, a handful of agents dramatically outperform the rest, and everything they do differently is sitting in the call recordings. Founded in 2017 by Zayd Enam, Tim Shi, and Sebastian Thrun, the Stanford professor behind Google X and Udacity, Cresta mines those conversations to learn what the best performers do, then coaches every agent in real time: suggested responses, knowledge, and guidance appearing on screen during live calls and chats.
That real-time layer is still the heart of the product, but the platform now spans the full loop. Conversation intelligence gives leaders visibility into every interaction, automated quality management replaces sampled QA scorecards, a training simulator lets agents rehearse against AI customers, and autonomous virtual agents take the high-volume calls that never needed a human. It plugs into the major contact-center stacks, including Five9, Genesys, Amazon Connect, NICE, and Avaya, so it layers onto what you run rather than replacing it.
Cresta sells to serious operations: United Airlines, Alaska Airlines, Cox Communications, Marriott, and Brinks Home are named customers, and investors including Andreessen Horowitz, Sequoia, and Greylock have backed it to the tune of roughly $276 million, most recently a $125 million Series D in late 2024 that valued the company around $1.6 billion. Pricing is enterprise and quote-based, with no public numbers.
Cresta is the pick when your strategy is making human agents better rather than replacing them, especially in revenue-bearing conversations like sales and retention where a slightly better sentence is worth real money. If you want humans out of the loop entirely, look at the autonomous-agent specialists; if you want your hundred agents performing like your best ten, Cresta was built for exactly that.
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