Retell AI Review 2025 : Pros, Cons, Pricing and Features

Retell AI reviews come with a mix of satisfaction and dissatisfaction from users around the world. Users praised it for their advanced capabilities in developing voice agents, 30+ language multilingual support, intuitive setup and real time performance tracking. While some users express dissatisfaction with its UK visibility, slow customer support, and GDPR compliance not cleared. Reddit reviews of Retell AI show a mix of positive and negative user feedback.

In this detailed Retell AI Review blog, we’ll explore hands-on insights from 2025 users along with expert professionals from the automation industry.

What is Retell AI ?

Launched on February 8, 2022, Retell AI introduced production-ready voice agents to automate phone, SMS, and chat interactions with natural, human-like performance. It features an intuitive drag-and-drop builder supporting IVR trees, dynamic transfers, real-time webhooks, and CRM integrations. Pricing starts at $0.07+/min for AI Voice Agents and $0.002+/msg for AI Chat Agents, with adoption across industries like healthcare, logistics, and finance. However, much like Synthflow, Retell relies on older technology and is better suited for smaller-scale use cases.

Key Features :

• Retell is SOC 2 Type 1 & 2, HIPAA, and GDPR compliant, meeting all industry compliance standards.
• Natural, smooth, and empathetic AI conversations with only 600ms latency.
• Support 31+ languages, and can dial to any country's phone numbers.
• Effortlessly handle millions of calls with scalable concurrent calling.
• Offer average 99.99% uptime and effortless fallback. Retell AI ensures your agents are always production-ready.
• Provide native and external connectivity to any CRM, telephony, automation platform, and database.
• Batch Calling: Launch hundreds of calls at once without hitting concurrency caps.
• Verified Numbers: Protect your lines from spam flags and build customer trust.
• Auto-Sync Knowledge Base, AI agents stay current by syncing directly with your company’s knowledge base, no manual updates needed.
• Warm Call Transfer, enables smooth handoffs with context messages so the next agent is fully prepared.

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The Pros and Cons of Bland AI

Retell AI is a modular, voice-centric automation platform designed for engineering teams and businesses needing scalable, real-time agent interactions, like any platform, it has its own strengths and limitations.

Pros : 

1. Cost Efficiency : Retell AI pricing starts at $0.07+/min for AI Voice Agents and $0.002+/msg for AI Chat Agents, with competitive rates for STT, TTS, and LLM.
2. Ease and Dependability : Intuitive dashboard with native SMS and chat capabilities for multi-channel workflows‍ and quick onboarding.
3. End-to-Support : Retell AI offers support via email at support@retellai.com and also has an active Discord Community for users.
4. Human-Like Speech : Retell AI consistently delivers sub-800ms response times, providing fast and reliable performance even during high call volumes.
5. Multilingual : Retell AI supports 31+ languages and captures cultural nuances, making it ideal for global deployments and diverse audiences.
6. Flexible Deployment : Retell AI is a cloud-native platform that integrates with any telephony system via SIP trunking, supporting simultaneous calls with flexible, scalable plans.
7. Testing & Optimization : Developers can test AI agents in a web-based playground, with Retell offering post-call analytics like sentiment, success rates, and containment for optimization.
8. A/B test call flows : Simulate conversations, experiment with A/B call flow testing, and track live call data using detailed dashboards.
9. Embedded using Retell web SDKs : Easily track CSAT, latency, sentiment and conversation outcomes in a single dashboard and deploy voice agents through Twilio, SIP, branded caller ID, or by embedding with Retell’s web SDKs.
10. Compliance & Security : Retell AI offers HIPAA, SOC 2, and GDPR compliance, it’s well-suited for regulated industries such as healthcare and finance.

Cons :

1. Open Source : Retell is a proprietary platform, not fully open source, but it does provide several open-source demo repositories, including LLM and Twilio integrations.
2. LoopTalk : No built-in autonomous testing, relies on manual checks or third-party tools for validation.
3. UK Visibility : Retell AI isn’t functional in the UK, one user commented, “Not sure why this company is on Trustpilot UK. Their platform is unusable here.”
4. No Code Limitations : Retell AI is a robust conversational platform for automating voice, SMS, and chat with natural, humanlike interactions, but non-technical users or cross-functional teams may find it challenging to create bots without coding knowledge.
5. Latency and Voice Quality : Retell AI’s average latency is 500-800 ms, slower than competitors like Dograh, leading to noticeable pauses that can make conversations feel less fluid, particularly in fast-paced interactions.
6. Layered Pricing : While Retell AI advertises $0.07/min, actual costs often reach $0.25 - $0.33/min due to separate fees for LLMs, STT, TTS, and telephony, making budget management difficult.
7. Complex for Non-Technical Users : Building bots often requires coding skills, making it hard for cross-functional teams.
8. Slow Feature Updates : Some features may lag behind competitors in innovation.
9. Integration Challenges : Connecting with third-party tools or workflows can require technical expertise.
10. Conversation Quality : Slower responses and occasional instability can make interactions feel less natural.

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Retell AI Pricing

Retell AI offers no platform fees, claims pay only for what you use. pricing starts at $0.07+/min for AI Voice Agents and $0.002+/msg for AI Chat Agents, with competitive rates for STT, TTS, and LLM. Two plans are provided by Retell AI, Pay as you go and Enterprise Plan.

Core Pricing Structure

• Pay as you go - Retell AI offers pay-as-you-go pricing with $0 to start, $0.07+/minute for AI Voice Agents, and $0.002+/msg for AI Chat Agents, including $10 free credits, 20 free concurrent calls, 10 free knowledge bases, pre-built functions, simulation testing, analytics and support via Discord and email.
• Enterprise Plan - Retell AI’s Enterprise Plan, for companies spending $3k+/month, offers as low as $0.05/min, scaling from 50+ calls, with discounted pricing, managed setup, higher concurrency, expanded limits, early beta access, optional white-glove service, and premium Slack support.
• Large Language Model (LLM) : LLM usage is billed separately by provider: GPT-5 at $0.04/min (Fast Tier $0.08/min), Claude 3.7 Sonnet at $0.06/min, and Gemini 2.0 Flash at $0.006/min.
• Telephony : Telephony costs include Retell via Twilio at $0.015/min, with no charges for SIP trunking or custom telephony, plus varying international call rates.
• Call Agent-ons : Call Agent add-ons include Knowledge Base at +$0.005/min (first 10 free), Batch Call at +$0.005/dial (first 20 concurrency free), and Branded Call at +$0.10/outbound call (custom phone numbers free).

Cost Estimate : 

Cost breakdown for 4,500 monthly Retell AI calls using GPT-5 LLM agents, ElevenLabs/Cartesia voices, and custom telephony.

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Retell AI Usability and Interface

Retell AI is designed for developers with advanced usability, rapid production deployment, cloud native voice agent platform aimed at scalability with two pricing models Pay as you go and Enterprise model.

What You’ll Build with Bland AI:

• Call flow control
• Multilingual and compliance features
• Omnichannel capabilities support for Voice, SMS and Chat
• Automated call agents for answering FAQ’s and booking appointment
• Testing and analytics for simulate calls and monitor performance
• Custom conversational flows and integrating with CRM

Limitations :

• UK Visibility : Retell AI isn’t functional in the UK, one user commented, “Not sure why this company is on Trustpilot UK. Their platform is unusable here.”
• Complex for Non-Technical Users: Building bots often requires coding skills, making it hard for cross-functional teams.
• No Autonomous Testing : There is no built-in autonomous testing feature like Dograh, so users must rely on manual methods or integrate third-party tools to test and validate their bots effectively.

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Retell AI Voice Quality and Latency

Retell AI’s roundtrip averages latency sub500–800 ms, which is slower than competitors like Dograh. This delay often creates noticeable pauses that interrupt the natural rhythm of dialogue. In fast-paced or dynamic conversations, the impact becomes more pronounced and disruptive. Users may find the flow less smooth, leading to a less engaging experience. While the platform remains functional, the lag can reduce conversational fluidity. Overall, higher latency weakens the natural feel of interactions.

Retell AI Developer Capabilities

Retell AI offers robust developer tools to build, customize, and scale advanced voice automation, real-time streaming, flexible integrations and a modular design for production environments.

Core Retell AI Features :

• Quickstarts : The company claims its phone agent can be deployed in just 5 minutes.
• Setup Conversation Flow Agents : Create agents with fine-grained control for structured conversations.
• Single/Multi Prompt Agent Setup : Create flexible agents for dynamic, less structured conversations using prompt based configuration.
• Simulation Testing : Retell AI offers automated testing with simulated conversations to validate agent behaviour at scale.
• Webhook : Offers webhook to receive real-time events for your calls.
• Custom Telephony : Integration with your custom telephony provider via SIP.

Retell AI Security and Compliance

Retell AI is designed for enterprise-grade security and compliance, offering broad certifications and customizable data protection to support healthcare, finance, insurance, and global enterprises.

• SOC 2 Type II: Confirms rigorous security controls and practices are in place for enterprise users.
• HIPAA Compliance: Tailored for healthcare providers, with Business Associate Agreements to ensure PHI protection under HIPAA standards.
• GDPR Compliance: Fully aligns with European data protection laws, ensuring anonymization, consent management, and processing transparency.
• PCI-DSS: Enables automatic redaction and tokenization of card data.
• ISO 27001: Information security management framework.

Retell AI Customer Support

Retell AI welcomes all kinds of feedback, feature requests, and help inquiries. Get dedicated support from both the Retell team and community via

• Discord channel support channel for instant support and community.
• Email : support@retellai.com

Retell AI App Review

Retell AI reviews show a mix of positive and negative feedback from users worldwide. Many praise its advanced voice agent capabilities, 30+ language multilingual support, intuitive setup, and real-time performance tracking. However, concerns include its 800 ms latency, lack of availability in the UK, slow customer support, and unresolved GDPR compliance questions. Reddit discussions also reflect this balance of satisfaction and dissatisfaction.

The Better Retell AI Alternative Dograh

Dograh stands out as a powerful open source alternative to Retell AI with several advantages :

1. Open Source - Dograh is an open source voice ai platform giving full flexibility to developers to customize, self host and extend features.
2. Easy to Use and Dependability - With AI to AI testing (over calls) and feedback loop through call summary, it is fairly easy to build extremely dependable bots with Dograh AI. Also this helps cut down on time needed to build the voice agent, and significantly improves time to market.
3. LoopTalk - Think AI calling AI. Dograh’s LoopTalk auto-tests voice bots using AI-driven customer personas to simulate real-world scenarios boosting accuracy and letting you get started in minutes.
4. No Double Billing - Dograh offers an open source solution to self host. And its cloud solution has transparent pricing with no double billing charges for STT, TTS and LLM.
5. End-to-End Support - Dograh’s professional team offers end-to-end support from integration and workflow setup to analytics and optimization.
6. Faster Setup - Dograh offers drag and drop workflow builder UI and prebuilt workflow as per your business needs.

Key Features

• NEPQ led Sales - Uses Neuro-Emotional Persuasion Questioning (NEPQ) to drive deeper engagement and guide conversations effectively.
• Real-Time Response - Dograh enables low-latency (<500ms), human-like voice conversations for seamless user interactions.
• Longer Conversation - Dograh multi-agent bots can handle calls up to 45 minutes, maintain full context throughout conversations without hallucinations.
• Human Like Speech - Pauses, Filler words & clear tone for realistic, engaging voice interactions.
• Emotionally Effective - Understand user concerns by actively empathizing and probing their pain points to deliver more personalized, effective voice interactions.
• Tailor-Made Build - Dograh experienced team offers hands-on support to help you design and deploy custom voice agents tailored to your scripts and business needs.
• Multilingual Voice Support - Support multilingual voice agents using top STT and TTS providers, enabling natural and fluent conversations for diverse global audiences.
• Expert Cloud Support - Get expert cloud support with Dograh test and refine your voice agent in real time using our intuitive, cloud-hosted interface.
• Flexible Deployment Option - Dograh supports both cloud and open-source deployments, giving you flexibility based on your business and technical needs.
• Customer Support - Dograh’s dedicated support team ensures your Voice AI runs smoothly from setup to ongoing updates with fast, reliable assistance.
• Data Privacy - Your data privacy is our top priority. Dograh’s open source solution helps adhere to strict GDPR and HIPAA standards to keep your information secure and fully compliant.

Ideal Users

• Real Estate Agent
• Customer Support
• Sales and Marketing Automation
• Tech Support
• Finance, Insurance and Banking
• E-Commerce
• Healthcare
• Logistics & Home Services
• Travel & Hospitality

Pricing

Dograh offers an open source solution without any platform charges. This makes it more cost-effective, customisable and scalable compared to Retell AI base pricing starts from $0.07+ /min for AI Voice Agents and for $0.002+/msg for AI Chat Agents.

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Getting started with Dograh

Interested in leveraging Dograh for lead generation, cold calling or business automation ? Here’s a streamlined path to getting started, along with direct links to essential resources :

1. Sign Up for Dograh

2. Quick Start Instructions

This guide walks you through using Dograh’s no-code drag-and-drop builder to easily set up real estate or customer calling workflows.

3. Tutorial : No Code Voice Agent Creation

Discover how to easily create agents, design workflows, and integrate CRMs using Dograh code-free, with real business examples included.

4. Book a Demo

Book a demo to see how Dograh can support your business needs like automating real estate leads or customer support with tailored insights and a live walkthrough.

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