Voice Platform vs Call Platform
ElevenLabs offers a conversational voice platform, with notable TTS and 5,000+ voices. If you need audio that sounds human, it's solid.
The Difference
ElevenLabs gives you a capable conversational stack. Retell is purpose-built end to end for running call operations at scale.
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Retell is your call orchestration engine. Give it a call operation — outbound SDR, inbound support, IVR deflection — and it handles the full stack.
- Navigates IVR menus natively, internally and externally
- Switches topics mid-call without restarting the flow
- Briefs the human rep before warm transfer — caller never repeats themselves
- Syncs script updates across all agents the moment you make them
You start with a call operation. Retell helps you run it at scale.
Why Retell is Different
Retell handles the call, not just the voice.
Mid-Call Topic Switching
Conversations rarely follow a script. When a caller jumps from a question to an objection to booking, Retell's Flex Mode follows them, handling all of it in one uninterrupted flow instead of resetting. The conversation follows the caller, not the script.
Agentic Transfers That Keep the Conversation Going
Customers don't have to start over when a call reaches a human. Retell can brief the receiving agent before the handoff, giving them context on who the caller is, what happened, and what needs attention. The result is a smoother transfer and a more natural back-and-forth between AI and human teams.
Native IVR, Not a Workaround
Retell navigates IVR menus natively, internal and external, even when gated by tone, with out-of-the-box DTMF handling. Built for the real phone network, not around it.
One Update for Every Agent
Change a script in Retell once and it syncs everywhere, instantly. No re-deploying agent by agent. Scale without the overhead.
Infrastructure that doesn't blink
Retell is built to run 40 million calls a month. Scale isn't a feature. It's the foundation.
Overview
Built for better conversations
At scale, Retell's native IVR, SMS, and 40M+ monthly call infrastructure cover ground that ElevenLabs conversational platform doesn't match.
| Features |  | .avif) |
|---|---|---|
| Live Call Orchestration | Built for every moment of the call | Full conversational platform (ASR, LLM, TTS, turn-taking) |
| IVR Navigation | Built-in IVR + routing capabilities | Supported via DTMF tones across Twilio and SIP |
| Mid-Call Topic Switching | Flex Mode maintains context | LLM-driven; Workflows & Procedures for branching |
| Deployment Reliability | Optimized for 40M calls/month | Built for telephony scale (SIP, batch, burst concurrency) |
| Reusable Flow Components | Easily syncs scripts across all agents | Supported via tool calls |
| Task Execution | Built-in task execution inside call | Supported via tools/function calling |
| Agentic Warm Transfer | 3-way call support, whisper messages | Warm transfer supported |
| Custom Telephony | Native SIP, inbound + outbound calls | Native SIP + Twilio, plus Vonage, Telnyx, Plivo, Exotel |
| Branded Calls | Supported | Not supported |
| SMS Function | Supported | Supported via native Twilio integration |
| AI Quality Assurance | Call analytics & simulation testing | Agent testing + conversation analysis |
| Custom On Hold Music | Supported | Not supported |
| CCaaS integrations | Natively integrates with 10+ platforms | Genesys, Amazon Connect, Twilio, Vonage, Telnyx, Plivo, RingCentral, SIP |
| Voice & Audio Quality | Excellent | Excellent |
| Custom LLM Integration | Supported | Supported |
| Analytics & Monitoring | Call performance dashboards | Real-time analytics dashboard + configurable evals |
| Pricing | | |
|---|---|---|
| Voice AI | $0.07/min | $0.08/ minute |
| Phone Number | $2.00/month | Provisioned via Twilio or SIP provider |
| Toll Phone Number | $5.00/month | Via telephony provider; not a native Retell-style SKU |
| Verified Phone Number | $10/month + $10 one-time setup | Not offered as a native product |
| Branded Calls | $0.10 per outbound call | Not Supported |
| Batch Calls | $0.005 per dial | Supported |
| Extra Knowledge Base Slots | 10 free, then $8/month each | Need Enterprise Plan |
| Concurrency Add-on | 20 free; $8/month per additional slot | Limited |
| Speech-to-Text | Included at no extra cost | Available; priced separately (Scribe) |
| Enterprise-Grade | | |
|---|---|---|
| Compliance | HIPAA, SOC2 Type 1 & 2, GDPR | HIPAA, SOC2 Type 1 & 2, GDPR |
| Rate Limit | No rate limit | 1000/day for lower plan; Enterprise plan will vary |
| Uptime to date | 99.99% | 99.99% |
| Onboarding | Ready to deploy with intuitive setup | Requires developer resources for advanced setup |
| PII Redaction | Automatic (names, addresses, DOBs, passwords, PINs) | Supported (post-call redaction; HIPAA Zero-Retention mode) |
| Role-Based Access Control | Supported | Supported (RBAC + SSO on enterprise) |
More Than A Voice Layer
A call platform that works for your operation.
AI Quality Assurance
Retell ships a dedicated AI Quality Assurance layer that reviews calls automatically, scores performance, and shows patterns across your whole operation. ElevenLabs offers agent testing, success-evaluation criteria, and conversation analysis, packaged differently than Retell's turnkey QA layer for live call operations.
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Simulation Testing
Retell lets you simulate thousands of call scenarios before going live — stress-testing flows and catching edge cases at scale. ElevenLabs also offers simulation, scenario, and tool-call testing via its API but Retell is geared specifically to high-volume call operations.
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Post-Call Analysis
Retell captures outcomes, objections, drop-off points, and conversion data from every call and turns volume into operational insight. ElevenLabs provides conversation analysis and a real-time analytics dashboard, with a different emphasis than Retell's telephony-first approach.
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Branded Calls & Verified Numbers
Show up. Don't get ignored. Retell displays your brand name on the caller ID — verified, trusted, answered. ElevenLabs has no branded call support. You're calling from an unknown number.
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SMS Within the Call Flow
Retell sends SMS natively within the call flow, from confirmations, follow-ups, and links, without a third-party integration. ElevenLabs supports SMS through its native Twilio integration.
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Provider Flexibility
Retell orchestrates across your choice of LLM, TTS, STT, and telephony layer with no lock-in. ElevenLabs supports custom LLM integration but is more vertically integrated around its own voice stack.
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Agent Experience
Retell is built for the full complexity of real call center operations with 3-way warm transfers, whisper messages, and approval workflows before every handoff.
When to Use Each Tool
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Use ElevenLabs when you:
- Need excellent voice synthesis for content or consumer apps
- 31 languages
- Want to build a voice AI startup
- Are building conversational voice agents on its integrated stack
- Prefer a vertically integrated voice platform
ElevenLabs excels when the voice is the product.
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Use Retell when you:
- Are running outbound SDR, inbound support, or IVR deflection at scale
- Need mid-call logic — topic switching, objection handling, dynamic routing
- Require warm transfers with agent briefing
- Already run on a CCaaS platform like Five9, Genesys, or Amazon Connect
- Need 40M+ calls/month infrastructure with a 99.99% SLA
Retell excels when the call operation is the product.
FAQ
Common Questions
What is an AI voice agent?
An AI voice agent is an autonomous system that can listen, speak, and hold natural phone conversations like a human. It uses speech recognition, large language models, and text-to-speech technology to understand callers, respond intelligently, maintain context, and take actions such as booking appointments or updating systems without relying on rigid scripts or human intervention.
How do Retell AI voice agents work?
Retell AI is a real-time conversational AI platform that uses proprietary voice AI orchestration with low-latency speech recognition, LLM-powered conversation understanding, and real-time function calling. The platform features a ~600ms latency (industry-leading responsiveness), ultra-realistic voices built from real performance data, and proprietary turn-taking models that know when to speak and listen.
How do I create an AI voice agent with Retell AI?
Creating a voice AI agent with Retell is easy! Sign up for a free account on the Retell dashboard, where you’ll receive $10 of free usage. From there, you can customize and configure your AI voice agent, integrating it seamlessly with your company’s data and workflows
Can I connect an agent to my existing phone number?
Yes. Retell supports integration with any telephony system through SIP trunking, making it easy to connect your existing phone number and deploy your AI-powered answering service or AI IVR without changing infrastructure.
What is an AI call center powered by Retell AI?
An AI call center built on Retell AI is a next-generation voice automation platform that deploys LLM-based, humanlike voice agents to handle inbound and outbound calls at scale. These agents can function as AI receptionists, intelligent IVR systems, and outbound AI telemarketing agents while managing phone-based interactions with natural, human-quality conversations and autonomous task execution.
Revolutionize your call operation with Retell
