Comparing Five9 and interface.ai? Both are Contact Center & CCaaS 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 | Five9 | interface.ai |
|---|---|---|
| Pricing | Paid · $119/seat/mo | Paid · Custom |
| Founded | 2001 | 2019 |
| Categories | Contact Center & CCaaS Enterprise Voice & Phone AI | AI Agents & Chatbots Contact Center & CCaaS Voice & Phone AI |
| Integrations | Salesforce ServiceNow Microsoft Dynamics 365 Zendesk Oracle Microsoft Teams Zoom RingCentral | Jack Henry Symitar Jack Henry SilverLake Fiserv Corelation FIS COCC Finastra |
Five9 is a cloud contact center platform, the kind that runs the whole operation: inbound and outbound voice, chat, email, SMS, and social messaging, plus routing, quality management, and workforce tools. Its Genius AI suite threads through everything, with voice and digital AI Agents that resolve customer conversations on their own, AI Agent Assist that transcribes calls and coaches live reps, and AI Summaries, Insights, and Knowledge doing the after-call cleanup. In 2025 Five9 pushed hard into what it calls Agentic CX, adding an Agentic Engine plus AI Trust and Governance controls.
The company has been at this since 2001, when it started in San Ramon, California, betting that contact centers belonged in the cloud back when they lived in server closets. It went public on NASDAQ in April 2014 at 7 dollars a share under the ticker FIVN. In 2021 Zoom agreed to buy Five9 for roughly 14.7 billion dollars in stock, then shareholders balked and the deal was terminated that September. Longtime CEO Mike Burkland retired, handing the job to Amit Mathradas in February 2026. Today Five9 claims more than 3,000 customers, including Alaska Airlines, PUMA, Omaha Steaks, Wyndham, and Exact Sciences.
Five9 publishes exactly two prices. Digital costs 119 dollars per concurrent seat per month for digital channels only, and Core costs 159 dollars with voice included. The Plus, Pro, and Enterprise bundles are quote only, and everything carries a 50 seat minimum plus usage based charges. Bundled AI covers 3,000 minutes per seat before metered fees kick in, and the serious stuff, AI Agents and virtual agents, is sold as add-ons through sales. Budget accordingly.
Choose Five9 if you run a genuine contact center with 50 or more seats and want voice, digital channels, and AI under one roof from a vendor that will still exist next year. Skip it if you are a small team wanting a simple helpdesk: Zendesk or Intercom will fit better, cost less, and skip the sales calls.
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interface.ai sells AI agents purpose built for credit unions and community banks. Its BankGPT platform, launched in late 2025, spans Agentic Voice AI that answers member phone calls, Agentic Chat AI for web and mobile, and Agentic Employee AI that assists staff, all wired into core banking systems so the agents can actually do things: check balances, move money, manage cards, take loan payments. The agents authenticate members and complete transactions rather than just deflecting calls. In 2026 it added Smart Collections, a multi channel collections agent, and a bundled CCaaS offering through the Telarus partner program.
Srinivas Njay and Bruce Kim launched interface.ai in 2019, and Njay's origin story is genuinely charming: his father ran a credit union in India, and the company was built around institutions of that scale. It bootstrapped to more than 100 financial institution customers and tens of millions in annual recurring revenue before taking its first outside money in October 2024, a $30 million round led by Avataar Venture Partners, of which $20 million was equity and $10 million debt. The company says it now handles over 1.5 million conversations a day.
Pricing is entirely quote based. Nothing is published on the site, no tiers, no starting numbers, and deals are scoped to institution size, channels, and integrations. The company markets ROI cases rather than price points, which is common in this space but means you should benchmark against rivals like Posh AI, Glia, and Eltropy, and ask hard questions about one time implementation fees on top of the subscription.
Choose interface.ai if you run a credit union or community bank and want deep, prebuilt core integrations, it claims more than 40 Jack Henry implementations alone, plus voice as the flagship channel. It is a poor fit outside banking, and larger banks with in house AI teams or non financial businesses should look at horizontal platforms instead.
Read the full interface.ai listing → · See interface.ai alternatives →
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