Comparing Five9 and Replicant? Both are Contact Center & CCaaS, Enterprise 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 | Replicant |
|---|---|---|
| Pricing | Paid · $119/seat/mo | Paid · Custom |
| Founded | 2001 | 2017 |
| Categories | Contact Center & CCaaS Enterprise Voice & Phone AI | Contact Center & CCaaS Enterprise Voice & Phone AI |
| Integrations | Salesforce ServiceNow Microsoft Dynamics 365 Zendesk Oracle Microsoft Teams Zoom RingCentral | Five9 Genesys Amazon Connect NICE Twilio Salesforce Service Cloud Zendesk ServiceNow |
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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Replicant builds AI agents for enterprise contact centers, with voice as the flagship channel and chat and SMS alongside. Its agents pick up the phone, understand callers in natural language, and resolve routine requests end to end: roadside assistance dispatch, payments, order status, appointment scheduling. When a call needs a person, it hands off with full context. The company claims more than a billion minutes of production conversations, and its pitch is turning your best recorded calls into a testable AI agent quickly rather than scripting flows from scratch.
Replicant was founded in 2017 out of Atomic, the venture studio, with cofounders Benjamin Gleitzman (CTO) and Atomic's Jack Abraham; Gadi Shamia, previously COO of Talkdesk, joined as CEO in 2019. Customers have included AAA clubs and Xenial, the restaurant tech provider whose support lines serve Burger King and Wendy's locations. Funding totals roughly $113 million: a $27 million Series A led by Norwest in 2020 and a $78 million Series B led by Stripes in 2022, with Salesforce Ventures participating.
There are no published prices. Replicant sells three tiers (Quick Start, Professional, Enterprise) through a sales process, and billing is usage based, scaling with the conversation volume the AI actually handles. The company advertises a money back guarantee if results miss expectations, but budget for an enterprise procurement cycle, not a credit card signup.
Choose Replicant if you run a high volume contact center, want a vendor that owns deployment and tuning rather than a toolkit, and need connections into CCaaS and CRM systems like Five9, Genesys, Amazon Connect, Salesforce, and Zendesk. Skip it if you are a small team or a developer who wants self serve, per minute pricing: platforms like Retell AI or Vapi will get you a working phone agent the same afternoon, at published rates.
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