OpenAI Real-time API vs Retell AI : Which one is better for your business?

AI voice agents are pivotal for businesses aiming to enhance customer interactions and streamline operations. By comparing OpenAI's Realtime API and Retell AI, we will evaluate which platform offers superior low-latency performance, multimodal capabilities, integration ease, and cost efficiency. This comparison will help determine the best solution for creating advanced, natural conversational experiences.

A quick overview on OpenAI Real-time API and Retell AI

What is OpenAI Real-time API

OpenAI's Realtime API enables developers to integrate low-latency, multimodal experiences into their applications, supporting natural speech-to-speech conversations. Unique features include handling speech recognition, text inference, and text-to-speech in a single API call, and maintaining a persistent WebSocket connection for dynamic interactions.

What is Retell AI

Retell AI is a platform that enables businesses to build, test, deploy, and monitor AI voice agents at scale. Unique features include auto-syncing with a company’s knowledge base, powerful call transfer capabilities, and easy appointment booking integration. The platform supports multilingual interactions and ensures compliance with industry standards like SOC 2, HIPAA, and GDPR.

Features of OpenAI Real-time API and Retell AI

OpenAI Real-time API features

OpenAI's Realtime API offers a range of unique features that cater to consumer needs:

• Low-latency performance: Ensures real-time interactions, making conversations feel natural and immediate.
• Multimodal capabilities: Supports both text and audio inputs, providing a versatile solution for various applications.
• Simplified integration: Allows developers to handle speech recognition, text inference, and text-to-speech in a single API call, streamlining the development process.
• Cost-effective pricing: Offers cached options for text and audio tokens, making it a budget-friendly choice for businesses.
• Persistent WebSocket connection: Maintains a continuous connection for dynamic and uninterrupted interactions, setting it apart from competitors.

Retell AI features

Retell AI offers a range of unique features that cater to consumer needs:

• Auto-Sync Knowledge Base: AI agents stay up-to-date by syncing directly with the company’s knowledge base without manual updates.
• Warm Call Transfer: Allows for warm transfers with handoff messages, ensuring the next agent is prepared.
• Navigate IVR: AI agents can press the correct digits to navigate IVR systems.
• Batch Calling: Enables sending out hundreds of calls without hitting concurrency limits.
• Branded Call ID: Displays the brand name to gain trust for outbound call campaigns.

Comparing OpenAI Real-time API, Retell AI and Dasha's features

Why choose one over the other?

When deciding between OpenAI Real-time API and Retell AI, consider the following points:

• Why use OpenAI Real-time API over Retell AI: OpenAI Real-time API excels in low-latency, real-time interactions, making it ideal for applications requiring immediate responses. Its single API call simplifies the development process by handling the entire speech-to-speech process, reducing the need for multiple models and API calls. This makes it a more streamlined and efficient choice for developers looking for advanced, multimodal capabilities.
• Why use Retell AI over OpenAI Real-time API: Retell AI offers specialized features tailored for call operations, such as Call Transfer, Appointment Booking, and Navigate IVR, which are not available in OpenAI Real-time API. Additionally, Retell AI provides seamless integration with various telephony systems and CRMs, along with compliance with SOC 2, HIPAA, and GDPR standards, making it a robust choice for businesses focused on call management and regulatory compliance.

Considering Dasha vs OpenAI Real-time API and Retell AI

When comparing Dasha to OpenAI Real-time API and Retell AI, consider the following:

• Why use Dasha over OpenAI Real-time API and Retell AI: Dasha offers unparalleled scalability and production stability, handling hundreds of concurrent calls with automatic failover and real-time monitoring. Its advanced telephony features, such as warm transfers and smart queuing, combined with the flexibility to bring your own VoIP provider, make it a superior choice for businesses seeking a robust and customizable AI voice solution.

What are the customers saying?

OpenAI Real-time API reviews

Users have praised OpenAI Real-time API for its powerful capabilities in natural language processing, image generation, and coding assistance. They find it easy to use and appreciate its intuitive interface. However, some users have reported frustrations with analysis problems and daily errors. Overall, the API has received a high rating of 4.7 out of 5 from 33 reviews.

• "This tool is just made the things very easy and the rest api works flawless with javascript and amazing machine at a very good price but there are some analysis problem in this bot but it is ok due to its capabilities." - Saransh Jagwani
• "Very easy to use Rest API. I use their REST API mainly because I make the API calls from a mobile app (flutter/dart). ChatGPT is great at constructing the rest api calls required to make chat completion, whisper, etc models as well. So, it is very convenient to use." - Berkan Sesen

For more detailed reviews, visit OpenAI Reviews.

Retell AI reviews

Users generally find Retell AI to be an excellent tool for creating voice agents with human-like speech capabilities. They appreciate its ease of use, customer support, and integration capabilities. The platform is praised for its affordability, lack of platform fees, and the ability to quickly deploy voice agents. However, some users have expressed frustrations with the limited number of deployable agents, the need for more function calls out of the box, and challenges in selecting new voices from different providers. Overall, Retell AI has received a high rating of 5.0 out of 5 stars.

• "Retell AI has no platform fees, meaning you only pay for what matters: the API cost. Retell does not have a platform fee like other platforms, making it super cheap to use without missing anything." - Emanuel T.
• "We’ve been using Retell to build these voice agents for our customer service, for over a year. It’s so natural, people don’t even realize it’s not a human half the time. The responses are super quick too, like you’re having a real convo." - Utkarsh M.

For more detailed reviews, visit Retell AI Reviews & Product Details.

Dasha reviews

Users have praised Dasha for its ultra-realistic voice capabilities, seamless integration, and robust scalability. They find the platform particularly useful for automating customer interactions and enhancing operational efficiency. The overall rating for Dasha is an impressive 4.8 out of 5. Customers appreciate the lifelike conversational abilities and the flexibility offered by DashaScript, making it a preferred choice for developers.

• "Dasha's AI agents are incredibly lifelike, making our customer service interactions feel natural and engaging." - John D.
• "The integration process was smooth, and the scalability of the platform is unmatched." - Sarah K.

For more detailed reviews, visit Dasha.AI Reviews & Product Details.

OpenAI Real-time API, Retell AI, or Dasha: Which is the best platform for you?

In conclusion, while OpenAI Real-time API and Retell AI both offer impressive features and capabilities, Dasha stands out with its ultra-realistic voice agents, seamless integration, and robust scalability. Each platform has its strengths, but for businesses seeking a comprehensive and customizable AI voice solution, Dasha is the clear choice. Ultimately, any of these platforms can enhance your operations, but we highly recommend giving Dasha a try.