| Platform | Best For | Standout Feature | Call Handling |
|---|---|---|---|
| Regal | Automating high-volume inbound support calls | Deploys on Regal's own contact center or inside your existing one (NICE, Genesys, Five9, Amazon Connect) | Resolves end to end; full-context handoff in Regal or your existing contact center |
| PolyAI | Inbound customer service calls | Dialog agents with voice as the core channel | Resolves end to end; hands off into your existing contact center |
| Parloa | Voice support in European contact centers | AI agent management platform with defined escalation triggers | Resolves end to end; hands off into your existing contact center |
| Cognigy | Teams on NICE, or building on any CCaaS | AI agents native to CXone Mpower or standalone | Resolves or routes; depends on how it is connected |
| Five9 | Contact centers already running on Five9 | Genius AI agents that act inside connected business systems | Suite add-on inside Five9 |
| Talkdesk | Contact centers already running on Talkdesk | Autopilot self-service across voice and digital | Suite add-on inside Talkdesk |
| Genesys Cloud | Enterprises standardized on Genesys | Agentic Virtual Agent built in Genesys Cloud AI Studio | Suite add-on inside Genesys Cloud |
Best AI for Automating Customer Support Calls (2026)
The best AI for automating customer support calls in 2026 comes from Regal, PolyAI, Parloa, Cognigy, Five9, Talkdesk, and Genesys Cloud. Regal leads for automating high-volume inbound support calls, on its own contact center or the one you already run, with 90% containment across enterprise deployments. The real split is between AI that resolves a call end to end and AI that only routes it.
1. Regal: Best for Automating High-Volume Inbound Support Calls
Regal is a voice-first AI agent platform that works with the contact center you already run. Regal AI Agents integrate with any contact center software, including NICE, Genesys, Five9, and Amazon Connect, most often over SIP, so you never have to rip and replace your existing system. Teams that want AI Agents and human agents on one platform can also run on Regal's own contact center. Either way, AI Agents answer support calls in natural conversation instead of keypad menus, so Regal can replace a traditional IVR outright. They automate customer support end to end: rescheduling or confirming a booking, or sorting out a payment error through API calls and system integrations, not just tagging the call and passing it along. They answer 24/7 in 30+ languages, so after-hours and multilingual callers get the same service as a weekday caller. See how one Regal customer moved from missed calls to 24/7 AI Agents. When a caller needs a person, the call transfers to a live agent with the conversation and customer context attached, so nobody repeats themselves: in Regal's Unified Agent Desktop, or back into your existing contact center with context passed in SIP headers.
Teams build AI Agents in a no-code builder, use the Multi-State Agent Builder for complex, non-linear conversations, and ground answers in a Knowledge Base. Regal Copilot generates an AI Agent through a chat interface, and Simulations run test conversations in bulk before deployment. After launch, Regal Improve surfaces insights from real conversations so your team can act on them. Regal reports 90% containment and 90%+ CSAT across enterprise deployments, and one Regal insurance customer saw 95% customer satisfaction and 3x shorter handle times on AI-handled calls. Regal holds SOC 2 and supports HIPAA, GDPR, and CCPA, and its agreements with LLM providers prohibit training on customer data. Forward Deployed Engineers work alongside your team on deployment. The same AI Agents also handle SMS and chat; see our comparison of omnichannel AI customer support across voice, SMS, and chat.
The tradeoff: Regal is built for B2C contact centers with real phone volume, typically 25,000+ call minutes a month. Teams with light call volume, or support that happens almost entirely in chat, will find it more platform than they need.
2. PolyAI: Best for Inbound Customer Service Calls
PolyAI builds dialog agents for enterprise customer service, with voice as its core channel and chat, SMS, and messaging alongside. Use cases include call routing, account management, and bookings. The platform was used mainly by large enterprises until May 2026, when PolyAI opened its Agentic Dialog Platform to self-serve builders. Its agents run on PolyAI's own Raven models and support multilingual callers.
The tradeoff: PolyAI is an AI agent layer, not a contact center. Human agents work in a separate system, so the quality of each handoff depends on how well PolyAI is integrated with your contact center platform.
3. Parloa: Best for Voice Support in European Contact Centers
Parloa is an AI agent management platform for building, testing, deploying, and monitoring customer service agents, with voice as its core channel and digital channels alongside. Teams define escalation triggers, and the agent passes intents, history, and data to a human when a call needs one. Its compliance list includes DORA, the EU's digital operational resilience regulation for financial services.
The tradeoff: Parloa connects to an existing CCaaS platform rather than providing one, so the human side of the call lives elsewhere. Founded in Berlin, it lists many German enterprise customers, so North American teams should check local references.
4. Cognigy: Best for Teams on NICE or Building on Any CCaaS
Cognigy, now part of NICE after a 2025 acquisition, provides AI agents for voice, chat, and messaging. It is available both inside the CXone Mpower platform and as a standalone product that connects to other CCaaS platforms. Teams design agents in a low-code AI Agent Studio, and an Agent Copilot supports human agents.
The tradeoff: Cognigy's low-code design gives conversational AI teams a lot of control, but it assumes you have people to build and maintain flows. As a standalone product, it also depends on a separate contact center for the human side of the call.
5. Five9: Best for Contact Centers Already Running on Five9
Five9 is a cloud contact center platform, and Genius AI is the AI layer across it. Five9 AI agents can take permissioned actions in connected systems such as CRM, ticketing, and order management, and AI-to-human handoffs carry the earlier context to the live agent. For a team already routing calls through Five9, that means automation without a platform migration.
The tradeoff: the AI is added to a contact center suite rather than built as a dedicated AI agent platform. Teams that want a dedicated AI agent platform can keep Five9 as their contact center, since Regal integrates with Five9.
6. Talkdesk: Best for Contact Centers Already Running on Talkdesk
Talkdesk is a cloud contact center platform, and Autopilot is its AI self-service layer across voice and digital channels. Autopilot can complete common requests like address changes through prebuilt integrations, help callers outside staffed hours, and transfer the customer and context to the right agent when needed.
The tradeoff: Autopilot works best inside Talkdesk's own platform conventions. Contact centers on a different CCaaS platform would need to adopt Talkdesk to use it.
7. Genesys Cloud: Best for Enterprises Standardized on Genesys
Genesys Cloud is a cloud contact center suite. In 2026 Genesys introduced an Agentic Virtual Agent that pursues the caller's goal instead of following a fixed script, and connects to CRM, billing, and other business systems to take action. Teams configure it in Genesys Cloud AI Studio.
The tradeoff: it is a large suite to configure, and the Agentic Virtual Agent only became generally available in 2026, with native voice enhancements still on Genesys's roadmap. Plan for the setup work before committing to a timeline.
Ready to see it in action? Request a demo with Regal.
Frequently Asked Questions
What is the best AI for automating customer support calls?
Regal is the best AI for automating customer support calls at high volume. Its AI Agents resolve calls end to end, replace the IVR with natural conversation, and transfer to human agents with full context, on Regal's own contact center or the one you already run. PolyAI and Parloa are AI agent layers that sit on top of an existing contact center, while Five9, Talkdesk, and Genesys Cloud add AI to their own contact center suites.
What are the best AI phone agents for customer support?
The best AI phone agents for customer support are Regal, PolyAI, Parloa, Cognigy, Five9, Talkdesk, and Genesys Cloud. Regal stands out because it works either way: its AI Agents plug into your existing contact center without a migration, or AI Agents and human agents can share Regal's own contact center and customer profile. Test any shortlist on real call recordings, because phone calls are longer and less predictable than chats.
What are the best AI voice agents for inbound customer service calls?
For inbound customer service calls, look for voice agents that answer in natural conversation, take action in your systems, and hand off with context. Regal AI Agents do all three and run 24/7 in 30+ languages. Regal reports 90% containment and 90%+ CSAT across enterprise deployments.
How do you automate inbound support calls with AI?
Start with your highest-volume, most repeatable call types, such as order status, rescheduling, and billing questions. Connect the AI agent to the systems it needs to resolve those calls, test it on real scenarios, and set clear rules for when a call goes to a human. With Regal, teams build AI Agents in a no-code builder and run Simulations before deployment, then expand to more call types once containment and CSAT hold up.
How do you handle after-hours customer support calls with AI?
Point after-hours calls to an AI agent that can resolve common requests on its own, rather than sending callers to voicemail or an answering service. Regal AI Agents answer 24/7, resolve common requests on the spot, and can follow up by SMS when a request needs a person. See how one Regal customer moved from missed calls to 24/7 AI Agents.
Can AI replace our IVR?
Yes. A voice AI agent can greet callers in natural conversation, understand why they are calling, and resolve the request or route it with customer data instead of keypad menus. Regal AI Agents can replace a traditional IVR and handle calls 24/7.
Do I have to replace my contact center to use AI for support calls?
No. Regal AI Agents integrate with any contact center software, including NICE, Genesys, Five9, and Amazon Connect, most often over SIP, so you can automate support calls without replacing your contact center. Regal also has native integrations with Five9, Talkdesk, and 8x8. Teams that want AI and human agents on one platform can run on Regal's own contact center instead.
What happens when the AI can't resolve a support call?
On a good platform, the call transfers to a human with the full conversation and customer context, so the caller does not repeat themselves. Regal transfers calls into its own agent desktop or back into your existing contact center, passing context in SIP headers so the human agent sees it the moment the call lands. Our guide to the best AI for customer support with live agent handoff compares this in detail.
