Best Retell AI Alternative
Retell AI voice quality is strong, but bills get hard to predict, setup feels built for engineers, and help often means Discord. OnDial gives everything Retell offers - natural AI voice agents, inbound and outbound, analytics, and integrations - plus simple flat pricing, deep language support, and no-code setup.
- Voice-only rate of $0.07/min becomes $0.13–$0.31/min all-in
- Developer-first setup - ops teams need engineering for changes
- Support often means Discord on starter plans
- No dedicated real estate, education, automotive, or recruitment pages
100+
languages supported
Flat pricing
from $0.055/min all-in
No-code
go live in under 30 minutes
<200ms
sub-200 millisecond latency
Understanding the platform you are comparing
Retell AI is a voice agent platform to build, test, deploy, and monitor AI phone agents with LLM-based natural conversations, aimed at developers and engineering-led teams.
2022
Launched
~600ms
Latency
31+
Languages
$0.07/min
Voice rate
At a glance
- LLM-based agents with natural, fast phone conversations
- Assemble agents from LLM + voice engine + telephony stack
- Targets developers and engineering-led teams
- G2 reviewers call it closer to infrastructure than a ready-to-run business tool
What Retell AI offers today
Retell AI lists a strong technical feature set aimed at teams that can wire LLMs, voice engines, and telephony together.
AI Voice Agents
Realistic voices with roughly 600ms response latency.
More detail
Retell AI ships AI phone agents with realistic voices and published latency around 600 milliseconds. Agents handle inbound and outbound calls with LLM-driven conversation, aimed at teams that want natural sounding phone AI.
Agentic Call Flow Builder
Visual builder that is still maturing - complex agents need the API.
More detail
The call flow builder lets teams design agentic conversations visually. Reviews and product notes describe it as maturing. Complex agents often still require API work, which keeps the platform developer-first for advanced use cases.
Real-Time Function Calling
Mid-call tools and API actions driven by the LLM.
More detail
Live conversations can trigger functions and external APIs in real time. This is one of Retell AI’s stronger technical features for teams that already have backend services to connect.
Streaming Knowledge Base
Document and knowledge retrieval billed as an extra per-minute cost.
More detail
Retell AI offers a streaming knowledge base so agents can pull from documents during a call. That capability is billed as an additional per-minute cost on top of the voice rate, which adds to total spend.
Testing and QA
Tools to test and monitor agents before and after go-live.
More detail
Teams can build, test, deploy, and monitor agents from one platform. QA tooling helps catch script and flow issues before production volume, which fits Retell’s developer and engineering audience.
Telephony Stack
SIP, Twilio, and branded caller ID for production calling.
More detail
Retell AI supports SIP, Twilio, and branded caller ID so teams can connect numbers and place production calls. Telephony is a separate cost layer alongside voice and LLM usage.
Enterprise Security
HIPAA, SOC 2 Type II, SSO, PII redaction, and on-prem on enterprise.
More detail
Enterprise plans include HIPAA, SOC 2 Type II, SSO, PII redaction, and on-prem options. Security depth is real for regulated buyers, but many of these controls sit behind enterprise packaging rather than every plan.
Where Retell AI falls short for growing teams
Retell AI has strong voice quality and a solid developer toolkit. The same teams start searching for alternatives when bills stack across voice, LLM, telephony, and knowledge base, when ops cannot change flows without engineering, when industry templates are missing, or when support on starter plans means Discord and email instead of dedicated help.
High Pricing
$0.07/min voice only - real cost often $0.13–$0.31/min all-in.
Full context
Retell AI lists a voice rate around $0.07 per minute, but the real cost climbs once LLM usage, telephony, and the streaming knowledge base are added. Teams commonly see $0.13 to $0.31 per minute all-in. At 10,000 minutes, that estimates roughly $1,200 to $1,800 per month - hard to budget compared with flat per-minute platforms. Concurrency above the free 20 slots also costs about $8 per slot per month, and billing can continue during silence and hold.
Limited Customization
Steep learning curve - 87 G2 mentions of difficult navigation.
Full context
Retell AI is flexible for engineers, but the learning curve is steep for business teams. G2 reviews include about 87 mentions of difficult navigation. The agentic builder is still maturing, and complex agents often need the API. Operations teams cannot change prompts, flows, or campaigns without engineering help, which slows iteration and pushes teams toward a no-code Retell AI alternative.
Industry-Specific Requirements
Pages for healthcare, FS, insurance, logistics, retail & travel - gaps elsewhere.
Full context
Retell AI publishes industry pages for healthcare, financial services, insurance, logistics, home services, retail, travel, and debt collection. There are no dedicated pages for real estate, education, automotive, or recruitment. Teams in those verticals need templates, scripts, and go-to-market patterns that Retell does not ship out of the box.
Integration Challenges
HubSpot, Salesforce, Twilio, and Zapier exist but need API configuration.
Full context
Retell AI connects to HubSpot, Salesforce, Twilio, and Zapier, but setup typically requires API configuration rather than plug-and-play connectors. That friction adds engineering time and ongoing maintenance. Teams that want native, no-code CRM and calendar sync look for a Retell AI competitor that ships integrations ready to use.
Scalability Concerns
Volume accuracy issues on G2; concurrency and silence billing add cost at scale.
Full context
Retell AI can handle millions of calls, but accuracy can stumble at volume - about 66 G2 mentions cite accuracy problems under load. Free concurrency starts at 20 slots, with extra slots at roughly $8 each per month. Billing during silence and hold further inflates cost at scale. For teams that need predictable concurrency pricing and consistent accuracy, those limits become a reason to switch.
Retell AI has strong voice quality and a solid developer toolkit. The same teams start searching for alternatives when bills stack across voice, LLM, telephony, and knowledge base, when ops cannot change flows without engineering, when industry templates are missing, or when support on starter plans means Discord and email instead of dedicated help.
OnDial vs Retell AI: Quick Comparison
This table compares OnDial and Retell AI on the points where Retell shows a documented gap, partial support, or undisclosed status.
10
OnDial advantages
10
Features compared
100+
OnDial languages
No Code Setup
Flat Predictable Per Minute Pricing
Local Currency Pricing for India (INR)
100+ Languages with Regional Accents
PCI DSS Compliance
24/7 Dedicated Support on All Plans
Plug and Play Native Integrations
Real Estate Industry Solution
Education Industry Solution
Automotive Industry Solution
The comparison shows that OnDial covers every category where Retell AI is partial, USD-only, or absent, including dedicated AI Voice Agents for Real Estate, with flat pricing, no-code setup, and dedicated support without enterprise gating on the basics.
Why OnDial is the best Retell AI alternative
OnDial is built to do everything Retell AI does, and then go further - flat predictable pricing, no-code setup, 100+ languages, sub 200 millisecond latency, and dedicated support on every plan.
Better Call Automation
Inbound, outbound, and 24/7 coverage without assembling your own stack.
OnDial handles inbound and outbound calls from a single AI agent that runs 24/7. Natural voice agents, analytics, and integrations ship together so teams do not assemble LLM, voice, and telephony as separate products. Retell AI voice quality is strong, but the stack is closer to infrastructure. OnDial’s automation covers appointment booking, lead qualification, reminders, surveys, and support tier one through AI Voice Agents for Healthcare and other prebuilt industry templates.
Faster Deployment
No-code setup - live in under 30 minutes without an engineering project.
OnDial gets teams live in under 30 minutes using prebuilt templates for healthcare, finance, AI Voice Agents for Education, real estate, ecommerce, logistics, insurance, automotive, and recruitment. Connect a phone number, pick a template, and the agent is ready. Retell AI setup feels built for engineers - ops teams often cannot change flows without development work.
Higher Call Accuracy
99.4% transcription accuracy with sub-200ms latency.
OnDial publishes 99.4 percent transcription accuracy with response latency under 200 milliseconds. Intent detection, sentiment analysis, and lead scoring happen inside every call. Retell AI publishes roughly 600 millisecond latency and G2 reviews flag accuracy issues at volume. OnDial is built for consistent quality as call volume grows.
Flexible AI Workflows
No-code branching, objectives, and escalation - no Discord-first support path.
OnDial runs custom logic, branching conversations, and objective based campaigns through a no-code configuration model. Business teams define audience, objective, and success criteria, then launch. Human escalation kicks in when a call needs a person, with full context captured. Changes do not require API work or waiting on an engineering sprint.
Enterprise-Grade Security
HIPAA, GDPR, PCI DSS, SOC 2, ISO, TRAI DLT & DPDP readiness documented.
OnDial displays HIPAA, GDPR, PCI DSS, SOC 2, and ISO compliance badges on its homepage, with India specific TRAI DLT and DPDP readiness on the enterprise page. Retell AI offers HIPAA and SOC 2 Type II on enterprise, but PCI DSS is not publicly stated. OnDial documents PCI DSS for payment conversations without leaving buyers guessing.
Cost-Effective Pricing
Essential $0.055, Growth $0.050, Scale $0.045 - one predictable bill.
OnDial pricing is flat and transparent: Essential at $0.055 per minute, Growth at $0.050, and Scale at $0.045. Concurrent channels and numbers are $4.90 each per month. The price includes the AI stack, telephony connectors, and platform fees. Retell’s $0.07 voice rate looks lower on paper, but LLM, telephony, and knowledge base stack on top to $0.13–$0.31 per minute - harder to predict and often more expensive at 10,000 minutes.
Key Features of OnDial
OnDial brings every capability businesses need to run voice AI at scale. Explore our complete AI Voice Agent Features to see how automation, analytics, integrations, and enterprise security work together in a single platform.
AI Voice Agents
One agent for inbound, outbound, and 24/7 coverage with CRM logging.
Learn more
OnDial AI Voice Agents are software systems that handle phone calls using artificial intelligence, without a human on the line. They answer instantly, speak naturally, and log every call to the CRM. One agent handles inbound, outbound, and 24/7 coverage, removing the need to stitch together multiple point solutions.
AI Phone Calling
End-to-end outbound and inbound calls at thousands of simultaneous conversations.
Learn more
AI Phone Calling on OnDial automates outbound and inbound voice calls end to end. The platform places calls at configured volume, follows the campaign objective, answers questions, and adapts to the conversation. Calls scale to thousands of simultaneous conversations without provisioning new hardware, so peak hour spikes do not break the platform.
Compliance & security
Trust built for AI voice agents
Calling agents handle sensitive conversations-compliance is a top objection, especially in healthcare and finance. This dedicated trust strip shows how your product meets the standards buyers ask about first.
HIPAA
GDPR
PCI DSS
SOC 2
ISO Compliance & Security
AI-specific controls for voice transcripts, call recordings, and agent workflows-so regulated teams can deploy with confidence.
Where OnDial outperforms Retell AI
Explore by sector - compliance proof, language reach, and automation playbooks.
Healthcare
Appointment booking, reminders, lab follow-ups & chronic care with HIPAA documentation.
- 60% no-show reduction cited on OnDial
- 3x more after-hours appointments
- 85% patient satisfaction
OnDial edge
No-code healthcare templates - Retell setup stays developer-first.
Full industry breakdown
Healthcare providers use OnDial for appointment booking, reminder calls 24 to 48 hours before a visit, lab result follow ups, prescription refill requests, insurance pre authorization queries, post visit follow ups, and chronic disease management. OnDial publishes a 60 percent no show reduction, 3 times more after hours appointments, and 85 percent patient satisfaction. Retell AI has a healthcare page and enterprise HIPAA, but clinic ops teams still need engineering help to change flows.
Migration from Retell AI to OnDial
Switching voice AI platforms feels risky, but OnDial has built the migration path to remove that risk. Templates, CRM sync, and onboarding support make the move straightforward.
How Easy is the Transition?
Prebuilt templates for 8+ industries - most teams live in under 30 minutes.
Details
The transition is straightforward. OnDial ships prebuilt templates for 8 plus industries, so most teams start from a template that already matches their use case rather than rebuilding API-driven Retell agents from scratch. The platform’s no-code setup means business teams create, launch, and manage campaigns without a central technical dependency. Most teams are live in under 30 minutes for a single use case, and full enterprise deployment typically takes 3 weeks.
Data Migration Process
Contact lists, scripts, CRM mappings, and recordings transfer through onboarding.
Details
Contact lists, call scripts, and CRM mappings transfer into OnDial through the onboarding workflow. Phone numbers can be ported or new numbers provisioned through OnDial’s telephony partners. Existing call recordings and transcripts can be imported for analytics context. For specific migration timelines and custom data imports, OnDial’s team handles the scoping directly with the customer.
Workflow Recreation
Rebuild Retell flows with no-code campaigns instead of API-first agents.
Details
Existing Retell AI call flows rebuild inside OnDial using the campaign configuration model. Define the audience, the objective, the success criteria, and the escalation rules. Branching logic, function calling patterns, and human handoff all map across. Where Retell required API configuration for HubSpot, Salesforce, or Zapier, OnDial handles CRM sync, calendar booking, and notifications with plug-and-play native integrations.
Team Training & Support
No-code interface with dedicated support - not Discord-first on starter plans.
Details
OnDial’s no-code interface means business users learn the platform quickly without a developer in the loop. Dedicated support is available on all plans, with enterprise onboarding, regular check ins, and priority support when needed. The contact page commits to a 24 hour response window on email. For larger rollouts, OnDial scopes training and change management with the customer’s team directly.
Benefits of Switching to OnDial
Switching to OnDial changes the math on voice AI. Cost per call drops, customer experience improves, and teams scale without growing headcount.
Reduce Operational Costs
Flat rates from $0.055/min vs Retell’s stacked $0.13–$0.31/min all-in.
More
OnDial handles calls with transparent Essential, Growth, and Scale rates from $0.055 to $0.045 per minute. Mid market businesses reduce cost per contact by over 60 percent in the first six months compared with human agents. The unified pricing model means one bill covers AI, telephony, and platform - no separate LLM, knowledge base, or silence billing surprises.
Improve Customer Experience
Answers in under 3 seconds with 90% tier-one resolution on first call.
More
Customers get answers in under 3 seconds, with the AI agent resolving 90 percent of tier one issues on the first call. Sentiment analysis flags frustrated callers in real time. Human escalations carry full context, so customers never repeat themselves. CSAT and NPS scores rise measurably after the switch.
Increase Agent Productivity
AI handles qualification, booking, and FAQs - reps focus on high-value calls.
More
Human agents only handle the calls that need a human. Lead qualification, appointment booking, FAQs, and order status lookups are handled by the AI. Agents spend their time on complex, high value conversations. Workforce efficiency improves by up to 30 percent based on OnDial’s published case material.
Scale Without Hiring
Thousands of simultaneous calls without $8/slot concurrency surprises.
More
OnDial’s elastic infrastructure handles thousands of simultaneous calls without provisioning new hardware or hiring new agents. Concurrent channels and numbers are priced simply at $4.90 each per month. Seasonal spikes, campaign launches, and growth surges do not trigger recruiting cycles or opaque concurrency invoices.
24/7 Availability
Support lines, bookings, and reminders never close - including holidays.
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OnDial runs 24 hours a day, 7 days a week, including holidays. Customers call when they want to call. Appointments get booked outside business hours. Reminders go out on schedule. Support lines never close. This alone shifts the customer experience for industries like healthcare, banking, and ecommerce.
Customer Success Stories
OnDial works with 500 plus businesses across healthcare, finance, insurance, real estate, and ecommerce.
OnDial’s healthcare industry page features a verified testimonial from Dr. Priya Nair, Medical Director at Wellness First Clinics in Bangalore. She reports that OnDial now handles 70 percent of all bookings automatically, with happier staff and patients who love the instant response.
Wellness First Clinics (Bangalore)
Dr. Priya Nair, Medical Director, reports that OnDial handles 70 percent of all bookings automatically. Staff spend less time on the phone and patients get instant responses for scheduling and reminders.
Mid-market insurance carrier
A mid market insurance carrier uses OnDial for policy renewal outreach and claims intake across 8 lines of business. Compliance transcripts and audit logs support regulatory reporting on every call.
National real estate franchise
A national real estate franchise uses OnDial to handle property inquiry calls across 40 markets, booking showings directly into agent calendars with native CRM sync.
ROI Achieved with OnDial
No-show reduction
60% fewer no-shows reported on healthcare deployments
After-hours bookings
3x more appointments captured outside business hours
Cost per resolution
Under $1 per AI resolution vs $7.16 for human inbound
Contact cost
Over 60% reduction in cost per contact in the first six months
OnDial’s healthcare page reports 85 percent patient satisfaction, $22,000 saved per year per clinic in admin staffing, 90 percent call resolution rate, and under 3 second average answer time. Actual results vary by use case and call volume.
Retell AI Alternative -FAQs
Get answers to common questions about switching from Retell AI to OnDial.
Start with OnDial - the bestRetell AI alternative
OnDial matches every Retell AI capability, then adds flat predictable pricing from $0.055/min, no-code setup, 100 plus languages, PCI DSS documentation, and dedicated support on every plan. Start a free 14 day trial and go live in under 30 minutes.