Top Companies Integrating AI Voice Agents With Contact-Center Infrastructure
Dominic Tarn
Head Writer - ReVerb
15.09.2025
AI voice is finally delivering business outcomes — lower handle times, higher containment, cleaner summaries, and smoother handoffs to live agents. The right partner connects those gains to your existing CCaaS, telephony, and CRM stack without ripping anything out. For teams benchmarking top AI voice agents companies for contact centers, the options below show what strong integration actually looks like.
The focus here is outcomes and speed to production. Each selection pairs proven rollouts with flexible engagement, so you can pilot on real traffic and expand once the metrics justify it — a hallmark of the best companies integrating AI with contact centers.
Leading Providers From The Best AI Voice Agents Companies for Contact Centers
Impekable stands out for hands-on builds that start with conversational design and end with production integrations on Twilio Flex and Google Contact Center AI. The studio approach keeps cycles fast — rapid prototypes, measurable tests, and then targeted rollout across IVR, agent desktop, and CRM. If you want quick wins without long lock-ins, ask for a staged pilot that de-risks scope and budgets — ideal when AI voice agent integration is your core need.
As a Twilio partner, Impekable brings battle-tested patterns for Flex and programmable Voice, plus accelerators that shorten deployment time. The recent partnership with ElevenLabs adds natural-sounding generative voices that escalate to live agents inside Flex when needed. Expect clear build plans, steady iteration, and pragmatic handoffs to internal teams
Services and expertise: AI voice agents on Twilio & Google CCAI; Flex contact center builds; IVR modernization; conversational UX & app engineering
Verint positions itself around an open CX automation platform with 50+ AI bots that slot into Avaya, Genesys, NICE, and more. The emphasis is integration over rip-and-replace — containment, automated summaries, and quality management that sit on top of what you already run. For buyers mapping the best AI call center solutions, Verint’s breadth across WFM/WFO and IVA in regulated industries is a pragmatic, low-disruption path.
The bots are natively available in Avaya’s Experience Platform and have scale stories across banking and retail. Strategic signals — from major events to announced transactions — point to continued investment in core automation. Pilots and phased deployments help teams validate KPIs before committing to wider rollouts
Services and expertise: IVA (voice & digital), WFM/WFO bots, QM automation, analytics integrated with major CCaaS/on-prem suites
Location: Melville, New York, USA
Team size: ~3,800 experts
Portfolio: Case studies include Novuna (Genie Bot ROI) and global brands in banking and retail
Nuance brings deep heritage in conversational IVR and voice biometrics, now tightly woven into Microsoft’s Digital Contact Center Platform and Azure ecosystem. The tooling (Mix) supports “build once, run anywhere” across Genesys, Cisco, Avaya, and Microsoft components, giving enterprises freedom to choose. That portability is why many shortlist Nuance among top AI voice assistant companies when multi-platform reach is non-negotiable.
Case studies show large-scale outcomes — higher CSAT, round-the-clock availability, and conversion lifts in telco, retail, and financial services. With biometrics and fraud controls alongside virtual assistants, Nuance addresses both experience and security in one program. Expect mature governance and deployment rigor suited to complex environments
Services and expertise: Conversational IVR & virtual assistants (Nina), Mix tooling, voice biometrics, omnichannel engagement with deep CCaaS/telephony integrations
Location: Burlington, Massachusetts, USA within Microsoft; global presence
Team size: up to 6,900 experts
Portfolio: Major telco and retailer deployments; Kotak Bank “Keya” VA; broad Genesys Cloud CX integration
PolyAI ships production voice assistants that handle real work — authentication, billing, reservations — while plugging into Amazon Connect, Genesys Cloud, Five9, and enterprise telephony. Strong SIP/BYOC patterns and secure data exchange make it straightforward to link into CRMs and downstream systems. If your priority is voice AI for customer service at scale, PolyAI’s track record with high-volume brands is compelling.
The company has grown quickly and highlights deployments such as Hopper and utility/energy programs that demand resilience. Live-agent handoffs carry context, and multilingual models cover diverse customer bases. It’s a fit for teams that want measurable deflection without giving up control of routing and reporting
Services and expertise: Voice agents with secure CCaaS SIP/BYOC integrations; analytics; multilingual; enterprise use cases
Location: London HQ (3 Sheldon Square) with US offices
Team size: ~201 experts
Portfolio: Hopper voice-support scale-out; utilities and energy deployments
Omilia’s OCP® platform spans conversational IVR, voice AI, routing, and fraud-reduction, with pre-built hooks for NICE CXone, Genesys Cloud, Amazon Connect, Avaya, and Cisco. The promise is end-to-end call automation that still plays well with existing telephony and workforce tools. Buyers vetting contact center AI solution providers will appreciate the “one-click” integration to Amazon Connect and the focus on high-volume voice.
Recent stories include Taco Bell’s drive-thru voice AI and utility/financial services transformations such as PSEG and credit-union security. The platform’s security features support strong authentication and fraud mitigation without adding friction. Expect staged go-lives and clear operational metrics that make expansion decisions straightforward
Zoom CX brings virtual agents for chat and voice together with AI Expert Assist, tied closely to Zoom Phone and video. Unified channels and native AI deflection create a simple path for teams that already use Zoom — handoffs to live agents keep context, and analytics close the loop. For buyers seeking the best companies integrating AI with contact centers, Zoom’s all-in-one stack reduces vendor wrangling.
Customers point to faster resolution and high deflection on routine tasks, backed by public stories from consumer brands. Zoom’s recognition in industry evaluations underscores the maturity of its CCaaS play, and a new Virtual Agent for Zoom Phone pushes automation to the front door. Try a constrained use case first — switchboard, common FAQs — then expand to richer flows
Services and expertise: CCaaS with AI Virtual Agent (voice/chat), AI Expert Assist, QM & analytics; tight Zoom Phone/Meetings integration
Location: San Jose, California, USA
Team size: ~7,412 experts
Portfolio: Cricut and Vensure examples for deflection and faster resolution
Replicant focuses on phone agents built expressly for contact centers, shipping out-of-the-box integrations to Genesys, Five9, NICE, Talkdesk, Amazon Connect, Zendesk, and ServiceNow. End-to-end handling of routine calls with context-rich escalation gives supervisors measurable relief and cleaner QA coverage. Teams comparing best AI call center solutions like Replicant value real-world stats — such as payment calls resolved at high rates for energy and home-services brands.
Quality monitoring across 100% of calls and automatic summaries reduce after-call work without new swivel-chair tasks. The platform is designed for quick deployment into existing stacks so pilots can prove savings within a single queue. Use that data to decide when to expand into additional call types
Services and expertise: AI phone agents for inbound/outbound; call summarization/QM; CCaaS/CRM integrations
Location: San Francisco, USA with Toronto, Canada
Team size: ~150 experts
Portfolio: Sunrun; additional case studies across insurance, transportation, and consumer services
Talkdesk’s CX Cloud brings AI Autopilot and AI Agents to voice, orchestrating self-service while coordinating handoffs and back-office actions. The platform shows up consistently in rankings and has customer stories across banking, retail, and travel. For searchers who want named leaders and proof points, it belongs on any shortlist of the best AI voice agents companies for contact centers.
Operational tooling — WEM, QM, and workflow automation — pairs with broad ecosystem integrations to fit complex environments. Autopilot deflection numbers appear in customer stories and awards, giving buyers concrete benchmarks. Start with one or two intents, then scale across channels once KPIs stabilize
Services and expertise: CCaaS, AI Autopilot/AI Agents (voice), WEM/QM, workflow automation, broad integrations
Location: San Francisco-based global company
Team size: ~1500 experts
Portfolio: Customer stories across finance, retail, and travel; measurable deflection via Autopilot
Parloa is a Berlin-born, voice-first platform focused on large-scale automation across Avaya, Genesys, Five9, NICE, Salesforce, ServiceNow, SAP, Twilio, Verint, and more. Its AI Agent Management Platform (AMP) helps teams design, test, and operate voice agents with discipline, which is vital as flows grow. For European and US buyers mapping top AI voice agents companies for contact centers, Parloa’s enterprise roster and multilingual chops stand out.
Recent outcomes include a 90% switchboard workload reduction, compliance-heavy reminder programs, and steady expansion in insurance and e-commerce. Azure-driven stories point to strong ties with Microsoft ecosystems. Expect program plans that favor pilots first, then guarded scale-ups with real QA data
Services and expertise: Voice AI agents; AMP for build/test/ops; integrations to CCaaS/CRM/WFM; multilingual and high-scale
Location: Berlin HQ; Parloa Inc. in New York, USA
Team size: ~250 experts
Portfolio: BarmeniaGothaer, Swiss Life, Orderbird; additional enterprise wins across insurance, e-commerce, and utilities
Twilio remains the programmable backbone of many AI voice projects — Flex for contact centers, Voice/IVR for telephony, and data products like Conversational Intelligence. The platform’s connectors to Google CCAI and recent updates such as ConversationRelay make it a strong substrate for custom agents. If you want to own the stack while accelerating AI voice agent integration, Twilio gives you building blocks and real-world patterns.
Case studies — from Lyft’s Flex deployment to published real-time voice assistant tutorials — show how teams move from prototype to production while keeping existing CRMs in place. With global scale and a broad developer base, Twilio is often the connective tissue between AI models and operational systems. It earns a regular spot among top AI voice assistant companies for teams that prefer tailored builds
Services and expertise: Programmable Voice & IVR, Flex contact center, Conversational Intelligence, Agent Copilot, connectors including Google CCAI
Location: San Francisco, California, USA (global)
Team size: ~5,466 employees
Portfolio: Lyft (Flex at scale); Flex/IVR transformation stories (HGS, Zing/Bennetts)
Making The Right Voice Partner Choice
Start with one outcome and one queue — containment for billing, verified identification, or clean summaries — and judge partners by time to value and operational fit. Confirm pre-built adapters for your CCaaS and CRM, along with export paths to your data lake. Ask to pilot on real traffic with supervisor dashboards live on day one — that’s how contact center AI solution providers prove they’re ready. Negotiate for model transparency and versioning so you can retrain or swap components without upheaval.
As results roll in, expand carefully and keep human-in-the-loop guardrails where risk is high. Map which teams own prompts, flows, and QA, and treat voice like software — staged releases, rollback plans, and regression tests. Use the guide above as a starting roster of voice AI for customer service leaders, then match strengths to your stack and culture. Whether you need platform depth, packaged agents, or custom engineering, this group includes the best AI call center solutions that can meet you where you are.
If you want to feature your company that integrates AI voice agents with contact-center infrastructure on this list, email us or submit a form in the Top Choices section. After a thorough assessment, we’ll decide whether it’s a valuable addition.
