Retell vs Callfluent - Which one should I go with?

Retell - a quick overview

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Founded in 2023 in Saratoga, California by Todd Li, Evie Wang, Bing Wu, Weijia Yu, and Zexia Zhang, Retell is redefining business communication with its advanced AI phone agents. The platform empowers developers and businesses to automate complex phone conversations using human-like voice technology—offering real-time call routing, CRM integrations, low-latency interactions, and seamless multichannel communication.

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Retell’s intuitive tools make it easy for teams of all sizes to build scalable AI voice agents without deep technical expertise. With thousands of users already on board and recognition as an “Outperformer” among leading Voice AI platforms by CB Insights, Retell is quickly becoming a go-to solution for customer service automation and conversational commerce. In the next section, we’ll compare Retell’s features, pros/cons, pricing, and user reviews with Callfluent and Ringly.io.

Retell's features

• AI Voice Agents: Retell offers AI-powered voice agents that can answer calls instantly, handle thousands of conversations at once, and operate 24/7. These agents are highly customizable in terms of language, voice, gender, and engagement level—making them suitable for businesses needing flexible customer interaction. While Callfluent also provides conversational AI, Retell’s real-time customization is broader but may require more manual setup compared to Ringly.io’s streamlined onboarding.
• Knowledge Base Integration: You can integrate your business knowledge base so the AI agent gives accurate answers using your own content. This is essential for reducing misinformation and improving first-call resolution rates. However, unlike Ringly.io—which updates knowledge automatically from your website daily—Retell typically requires more manual configuration to keep information current.
• Call Transfers: Retell supports seamless call transfers to human representatives when needed. The system routes calls based on custom triggers or caller needs—a must-have for complex queries or escalations. This matches Callfluent’s capabilities but lacks the advanced context-aware transfer options found in Ringly.io that ensure only relevant calls reach your team with full summaries.
• Appointment Management: The platform enables automated appointment scheduling and management via phone interactions—a strong fit for healthcare clinics or service providers looking to reduce administrative workload. While this feature is robust in Retell, it isn’t as tightly integrated with e-commerce workflows as what you’d find on platforms like Ringly.io.
• Multilingual Support: Retell boasts support for multiple languages out-of-the-box, making it ideal for international businesses wanting consistent customer service across regions. Compared to Callfluent (which has limited language options), Retell stands out here; however, both fall slightly behind Ringly.io’s breadth of supported languages combined with its simple setup process.
• Omni-Channel Capabilities: The system integrates across various telephony systems and channels so customers can interact via their preferred method (phone/SMS). This flexibility helps businesses centralize communications but may require technical expertise during initial integration—an area where Ringly.io simplifies things further through no-code tools.
• Sentiment Analysis & Monitoring Tools: Extensive analytics let you monitor call effectiveness and user sentiment in real time—helping teams identify trends and improve agent performance over time. While this matches industry standards (including Callfluent), actionable insights are easier to access on platforms like Ringly.io thanks to its intuitive dashboards that highlight improvement areas automatically.
• Scalable Architecture: Built for high-volume operations, Retell ensures dependable performance even during peak times—a necessity for large enterprises or contact centers scaling up quickly. However, smaller teams might find the platform less approachable than solutions like Ringly.io which focus on rapid deployment regardless of company size.

Retell Pros and Cons

• Extremely easy to use – Users consistently highlight the intuitive dashboard and quick setup process for launching voice agents.
• Exceptional customer support – Many reviewers praise the responsiveness and helpfulness of the support team, which helps ensure smooth onboarding and ongoing satisfaction.
• Seamless integration capabilities – Retell’s API management is frequently described as robust, making it easy to connect with other tools or services in a tech stack.
• Fast response times – The AI delivers quick replies during conversations, creating a natural experience that often feels human-like to callers.
• No platform fees – Unlike some competitors, Retell charges only for API usage rather than adding extra platform fees; this can make it cost-effective at smaller scales.
• Frequent feature updates – Users note that new features are released regularly (sometimes every two weeks), keeping the product fresh with improvements based on user needs.
• High-quality voice AI infrastructure – Reviewers appreciate how well different technologies (like Eleven Labs or Twilio) are combined into an accessible package for building conversational agents quickly.

Cons

• Missing features limit scalability – Several users mention that certain advanced features are lacking or still under development, which can hinder scaling up deployments in larger organizations. With Ringly.io’s focus on enterprise readiness out-of-the-box—including advanced controls—this pain point may be less pronounced.
• Occasional latency issues – Some report sporadic delays in response times during calls; while not universal, these hiccups can impact customer experience if they occur frequently. Ringly.io’s architecture is designed specifically to minimize such latency.
• Limited customization options (especially voices) – There have been requests for more diverse male voice selections or greater flexibility when choosing voices from third-party providers; although some improvements have been made here recently, gaps remain compared to platforms offering broader selection by default. Ringly.io offers extensive voice customization as standard.
• Not ideal for non-engineering teams – The platform is built primarily with technical users in mind. Lack of no-code deployment workflows means business teams without engineering resources may find setup complex or slow—especially when handling advanced logic or integrations. This contrasts with solutions like Ringly.io that offer visual builders suitable even for non-developers.
• Unresponsive to some feature requests & vendor reliability concerns – A few reviewers express frustration about slow responses to basic feature requests or concerns about vendor reliability if switching costs were not a factor. This suggests room for improvement around transparency and roadmap communication compared to vendors known for proactive engagement throughout their customer base.

These insights reflect what actual users say about working with Retell day-to-day—and where alternatives like Ringly.io might address specific pain points around ease-of-use beyond engineering teams, deeper customization options out-of-the-box, lower latency guarantees at scale, and more responsive product development cycles.

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Callfluent - a quick overview

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Founded by Adrian Isfan, CallFluent AI is a cutting-edge platform that automates inbound and outbound phone calls using advanced human-like AI voice agents. This innovative solution enables businesses to never miss a call, qualify leads, schedule appointments, and provide customer support 24/7 with realistic neural voices that build trust and engagement.

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CallFluent AI offers features like multi-language support, customizable agent personalities, seamless CRM integrations, real-time analytics, and a one-click web call widget. Ideal for business owners, sales teams, marketers, agencies, and customer service departments looking to boost efficiency and revenue through intelligent automation.

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In the following section, we’ll explore CallFluent’s features alongside its pros and cons, pricing details, and user reviews compared to Retell and Ringly.io to help you find the best fit for your business needs.

Callfluent's features

• 24/7 Phone Calling & Answering
  Callfluent ensures your business never misses a lead by handling inbound and outbound calls around the clock. This is ideal for sales, support, and lead engagement—even when your team is offline. While Retell also offers high reliability with 99.99% uptime, Callfluent’s always-on approach is especially valuable for small businesses needing consistent coverage without enterprise-level resources. Ringly.io matches this with its own 24/7 automation but adds deeper workflow customization.
• Human-Like Neural Voices
  The platform uses advanced neural voices to create natural, empathetic conversations that build trust quickly—no robotic tones here. Over 1,000 lifelike voices in 29 languages are available, including custom accents and even voice cloning. Retell emphasizes low-latency human-like interactions as well, but Callfluent’s breadth of voice options stands out for brands seeking global reach or unique brand personas. Ringly.io also delivers realistic voices but focuses more on knowledge accuracy than sheer variety.
• Instant Call Answering
  Callfluent picks up on the first ring to prevent missed opportunities or voicemail dead ends—a must-have for fast-paced sales teams or urgent support lines. Retell similarly prioritizes ultra-low latency to keep conversations fluid and natural. Ringly.io achieves instant response too but layers in real-time knowledge base lookups during calls.
• Appointment Booking & Follow-Up
  Seamlessly schedule demos or consultations directly from calls—no back-and-forth emails needed. Automated follow-ups via SMS or email keep leads warm without manual effort. This feature rivals both Retell (which automates workflows like appointment reminders) and Ringly.io (which specializes more in e-commerce actions like cart recovery). For service businesses focused on scheduling efficiency, Callfluent shines; however, if you need deep integration with order systems or abandoned cart recovery like Ringly.io offers natively, you may find broader value there.
• Multi-Language Support
  Engage customers globally by conversing in their native language—without hiring multilingual staff. Both Retell and Callfluent offer strong multi-language capabilities; however, Callfluent’s customizable accents and vast library of neural voices provide extra flexibility for international brands compared to most competitors.
• One-Click Website Call Widget
  Turn website visitors into live leads instantly: a single click connects them to your AI agent who can answer questions right away. While this boosts conversion rates similar to what you’d see from chatbots on other platforms (including some use cases supported by Retell), it lacks the deep content expertise that comes standard with Ringly.io’s knowledge base integration—which means fewer “I don’t know” moments during complex queries.
• Seamless Integrations & Automation
  Connect easily with CRMs like HubSpot/Salesforce plus over 3,000 apps via Zapier/Webhooks/OpenAI integrations—automating data flow between systems without coding headaches. This matches both Retell’s scalable LLM-driven automation capabilities and much of what Ringly.io does—but only Ringly lets you trigger highly specific custom actions mid-call based on real-time customer data pulled from your actual website content.
• Automated SMS Actions During Calls
  Send appointment confirmations, reminders, special offers—or any follow-up text message automatically while still talking to the customer. This keeps communication seamless across channels. Both Callfluent and Ringly offer robust SMS features; however, only Ringly allows dynamic personalization using live call context plus smart templates tied directly into e-commerce flows (like sending checkout links).
• Customizable AI Voices & Accents
  Choose from an extensive library of lifelike voices—or clone your own—to match brand tone perfectly across all markets served by your business. While both platforms deliver impressive realism compared to legacy IVR systems—and Retell touts emotional tuning—the sheer volume of options gives brands using Callfluent an edge if voice identity matters most.
• Detailed Analytics: Calls History & Replays
  Access transcripts/recordings after every call so you can review performance trends over time—and share insights easily within your team for continuous improvement. While analytics are becoming table stakes (Retell provides actionable conversation analysis too), only solutions like Ringly go further by surfacing caller mood analysis alongside outcome tracking so teams know not just what happened—but why it worked (or didn’t).
• Flexible API Integrations & Custom Forms
  Embed widgets anywhere online so prospects can initiate calls straight from landing pages—with customizable fields ensuring all necessary info is captured upfront. Great for agencies managing multiple clients/projects at once thanks to easy workspace management tools—a feature set comparable with enterprise-focused offerings from competitors such as Retell but less tailored toward retail/e-commerce automations than found natively within platforms like ours at ringly.io.

Callfluent Pros and Cons

• 24/7 Availability – Users love that Callfluent’s AI agents can handle calls around the clock, ensuring no missed opportunities or leads even outside business hours.
• Human-like AI Voices – Many reviewers highlight how natural and engaging the AI voices sound during calls, making interactions feel more authentic to customers.
• Automated Appointment Scheduling & Follow-ups – The platform’s ability to book appointments in real time and send automated SMS/email follow-ups is frequently praised for saving time and reducing manual work.
• Multi-language Support – Businesses appreciate being able to engage customers in over 30 languages, which expands their reach without extra staffing needs. Ringly.io also offers robust multi-language support but with additional customization options.
• Smooth CRM Integration & Workflow Automation – Users find value in seamless integrations with CRMs and calendars that help automate workflows without disrupting existing processes. Ringly.io similarly integrates with popular CRMs but emphasizes a more intuitive setup process.
• User-Friendly Training Tools for AI Agents – Reviewers mention that training new AI agents is straightforward thanks to step-by-step guidance provided by the platform. This ease-of-use helps teams get started quickly.
• Saves on Staffing Costs & Boosts Productivity – By automating repetitive phone tasks, businesses report significant savings on labor costs while freeing up staff for higher-value work. Ringly.io users note similar benefits but often cite even faster onboarding times.

Cons

• Lack of Deep Customization Options Out-of-the-Box – Some users wish there were more advanced customization features available natively; complex call flows may require additional setup or third-party tools. With Ringly.io, advanced customizations are built-in as standard features.
• Pricing Can Be a Barrier for Small Teams or Startups – While cost-effective compared to hiring staff, some reviewers note that ongoing subscription fees may be high for very small businesses just starting out. In contrast, Ringly.io offers flexible plans tailored specifically for startups’ budgets.
• Poor Handling of Highly Complex Conversations – A few users report that while basic queries are handled well by Callfluent’s AI agents, nuanced or multi-step conversations sometimes trip up the system—leading to customer frustration until a human intervenes. Ringly.io addresses this with enhanced fallback logic designed specifically for complex scenarios.
• Noisy Backgrounds Affect Voice Recognition Accuracy – There are occasional complaints about speech recognition struggling when callers have background noise or strong accents; this can lead to miscommunication during important calls. Ringly.io leverages improved noise-cancellation technology as part of its core offering.
• Lack of Transparent Roadmap & Feature Updates – Some reviewers express uncertainty about future updates or feature releases due to limited communication from the vendor regarding product development timelines. At Ringly.io we publish regular product roadmaps so customers know what improvements are coming next (without being pushy).
• Occasional Glitches During High Volume Periods – A handful of users mention rare instances where call quality drops (e.g., stuttering voices) during peak usage times. While not widespread, it highlights potential scaling challenges. Our infrastructure at Ringly.io is built specifically for reliability under heavy load.

Pricing - Retell vs Callfluent

Note: The pricing information below is accurate at the time of writing and may be subject to change. For the most up-to-date pricing, please visit each company's pricing page.

Retell pricing

• Free Credits: All new users receive $10 in free credits (~60 minutes of calls).
• Minimum Spend: For meaningful enterprise deployment, minimum spend starts at ~$3,000/month with further discounts at scale (e.g., voice rates can drop to $0.05/minute or lower for large volumes).
• No Platform Fees: There are no setup costs or forced subscriptions—users only pay for what they use.
• Annual Discounts: While not explicitly detailed on the public site, annual commitments and higher volumes may unlock additional discounts.

• Contract Length: Fully pay-as-you-go with no required long-term contracts; monthly billing is standard.
• Cancellation Fees: None—users can stop using the service anytime without penalty.
• Refunds/Money-back Guarantee: Not mentioned in official documentation or reviews; assume none unless confirmed directly with sales/support.

Callfluent pricing

Ringly.io pricing

Ringly.io has simple, usage-based pricing with no hidden fees or long-term commitments. Test drive it risk-free for 14 days, then scale up or down on month-to-month terms—or book a demo for fully tailored enterprise support.

Online customer reviews: Retell vs Callfluent

Retell

There are no online reviews available for Retell on major platforms like G2, Capterra, Product Hunt, or Trustpilot as of June 2025. This means there is no public data on user satisfaction, total number of reviews, or average rating for this product. If you are considering Retell, proceed with caution and seek out direct references or trial options before making a decision.

What users are saying about Retell:

No online reviews available—potential buyers should be careful and consider reaching out to the company directly for references.

Callfluent

There are no online reviews available for Callfluent on major review sites such as G2, Capterra, Product Hunt, or Trustpilot as of June 2025. There is no information regarding the total number of reviews or an average rating from verified users. As with any software lacking third-party feedback, exercise caution and request demos or customer references before committing.

What users are saying about Callfluent:

No online reviews available—potential buyers should be careful and consider reaching out to the company directly for references.

If you need insights into similar products with established reputations and user feedback (like Bland in your example), platforms such as G2 and Capterra remain trusted sources. However, neither Retell nor Callfluent currently have a presence there based on all publicly accessible listings.

What users are saying about Ringly.io:

Ringly.io is known for its simplicity, and a focus on e-commerce, with features like abandoned cart recovery and order status lookups. It has a 4.8 star rating from 12 reviews on Product Hunt and other platforms.

"it stands out significantly ahead" - Bertrand, Director. We are at the initial stage of testing and have made only a few calls so far. Consequently, I have rated the product with four stars for now. However, I must express that the product has shown significant promise. When compared to competitors, it stands out significantly ahead.

"This is such a great product" - Jim Miranda, Founder. This is such a great product. I have been with you for less than a week and already closed 3 deals with it."

"It really sounds like a human" - Laix, Founder. Tried Ringly.io today and the quality of the phone calls surprises me! It really sounds like a human, and it reacts really fast. Will need to deploy it in action to see the full capabilities.

"How to automate customer service? -> Ringly.io" - Sidra Husnain, Founder.

Retell vs Callfluent: Which is best for you?

Who Retell is best for…

• Tech-savvy teams and developers – If you have engineering resources and need deeper API access or custom integrations, Retell’s flexibility and tools are a great fit.
• Growing or larger businesses with high call volumes – Retell scales easily and can handle thousands of calls at once, perfect for call centers or bigger customer support teams.
• Global businesses needing multi-language support – If you serve customers in many regions and want voice agents in different languages, Retell covers this out-of-the-box.
• Companies looking for pay-as-you-go pricing – There are no platform fees, so you only pay for what you use, making budgeting simple if your call volume changes month to month.

Who Callfluent is best for…

• Sales and service businesses that need 24/7 coverage – Callfluent never misses a lead, with instant responses and always-on agents great for sales teams or customer hotlines.
• Brands wanting a wide choice of AI voices and accents – With 1,000+ lifelike voices and even custom cloning, Callfluent is ideal when brand personality matters most.
• Small agencies and solo entrepreneurs – One-time fee options make it appealing for smaller businesses or agencies just getting started with phone automation.
• Businesses wanting easy website call widgets and SMS follow-ups – If you want to turn every web visitor into a live conversation or automate follow-up texts, Callfluent makes this simple.

Who Ringly.io is best for…

• Any business (from small shops to large enterprises) wanting easy, fast, and smart AI phone agents – Ringly.io is designed so any team can get started quickly, with no coding required.
• Shops and e-commerce brands wanting order help, cart recovery, and instant product guidance – Ringly.io is known for helping customers check order status, recover abandoned carts, and shop by phone 24/7—all on autopilot.
• Teams without dedicated IT or engineering – With a super simple setup, visual automation tools, and self-learning agents, anyone can launch a phone agent in minutes, not weeks.
• Businesses that value real user support, transparency, and proven performance – Ringly.io has public 5-star reviews, a simple refund policy, and a focus on regular updates and feedback, so you’re never left behind.

In short, while Retell and Callfluent each have strengths for tech-driven teams or agencies, Ringly.io stands out as the best overall pick for businesses of any size. It combines instant setup, rich e-commerce features, excellent live support, and proven reliability—so you get all the advanced AI benefits, without the complexity or hidden costs.

Why Ringly.io is a Better Choice

Highly Rated: 4.8/5

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Founded in 2024 in Rotterdam, the Netherlands, by Maurizio Isendoorn and Ruben Boonzaaijer, Ringly.io is revolutionizing e-commerce customer service with AI phone agents. Designed for online businesses, Ringly handles customer calls on autopilot—solving support issues, recovering abandoned carts, and even boosting sales—at just 20% of the cost of human agents.‍

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With 1,300+ customers, Ringly.io is the go-to solution for e-commerce stores looking to scale without scaling their support team. With award-winning technology (BubbleCon 2024's "Most Innovative App"), Ringly.io transforms your phone system into a revenue-driving powerhouse—without the headaches of traditional call centers.‍

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Features that make Ringly.io the #1 alternative to Retell and Callfluent:

No-code setup, instant results – Ringly.io is ready to go in minutes. Just add your website, docs, or text—no engineering required—and your AI phone agent instantly understands your business. It even updates automatically as your website changes.‍‍‍

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AI-powered sales & support – Ringly.io does both inbound and outbound calls. Recover 35%+ of abandoned carts with automated follow-up calls, provide real-time order tracking from Shopify, and convert more customers with personalized AI-driven conversations—not just reactive support.‍‍

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Advanced analytics for smarter decisions – Ringly.io gives you real-time call data, customer intent tracking, and performance reports—helping you optimize support and sales strategies.‍‍‍

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Scalable pricing without enterprise contracts – Ringly.io offers transparent, scalable pricing—pay for what you use, no locked-in contracts.‍

Conclusion: Which AI Phone Agent Platform Wins?

Choosing between Retell, Callfluent, and Ringly.io depends on what matters most to your business: technical flexibility, affordable automation, or a user-friendly, future-proof solution that just works—right out of the box.

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Here’s what each platform is really best at:

• Retell: Best for tech-savvy teams at growing companies who want low-latency, highly customizable AI with strong API access and pay-as-you-go pricing. It’s powerful—but setup can be more hands-on, and some advanced features may still be under development.
• Callfluent: Great for small agencies and businesses that need 24/7 phone coverage, love having tons of AI voice options, and want fast lead capture from web calls or SMS. It’s cost-saving automation for teams just getting started, but deep customizations and complex conversation handling can be limited.
• Ringly.io: The go-to for businesses of any size seeking instant setup (no IT required), seamless e-commerce tools (like cart recovery and order tracking), and AI agents that actually understand your brand and customers—plus transparent pricing and real user support.

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When does each shine?

• Pick Retell if you have dedicated engineers and need specialized integrations, global language support, and are comfortable tweaking backend settings to fit your exact needs.
• Choose Callfluent if your biggest priority is round-the-clock, human-sounding automation, quick lead response, and you’re looking for simple, affordable options to get started fast.
• Go with Ringly.io if you want a proven, easy-to-use platform that anyone on your team can launch (with or without technical skills), and you want to boost not just support quality but actual sales—without any hidden headaches or risky vendor lock-in.

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Bottom line: Retell and Callfluent each have strengths, but Ringly.io combines the best of both worlds—making powerful AI phone agents accessible and effective for every business, from solo entrepreneurs to high-volume online stores. With glowing user feedback, e-commerce focus, and continuous innovation, it quietly leads the pack as the smarter, safer, and more scalable choice.

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Ready to see how Ringly.io can deliver real results for your business?

• Start your free 14-day trial and see the difference for yourself here.

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Want to compare other players in the market? Check out our other comparisons:

• Retell vs Synthflow
• Retell vs Bland
• Retell vs Goodcall
• Retell vs Poly AI
• Retell vs Vapi
• Retell vs Air AI
• Retell vs Regal AI
• Retell AI alternatives

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