List of the Top 16 AI Voice Agents for OpenAI in 2026

Intervo is a powerful open-source platform designed to function as an enterprise-level voice and chat AI agent system, with the goal of improving the automation of real-time interactions with customers through both voice and text channels. It allows businesses to quickly create, train, and deploy customized agents in just minutes, without requiring any programming skills; users only need to define the agent's purpose, upload pertinent knowledge sources, choose a voice engine like ElevenLabs or Azure, and launch the agent across multiple integrated platforms. The versatility of these agents enables them to support a variety of functions, including lead qualification, customer service, AI receptionist roles, interactive product assistance, and internal support for teams such as HR and IT. They seamlessly integrate with telephony services via Twilio and connect to numerous large language model backends such as OpenAI, Claude, and Gemini, while also managing complex AI workflows and being embedded on websites as interactive elements. Intervo's strong emphasis on scalability, compliance, and flexibility allows companies to implement context-aware conversational agents that efficiently respond to complex questions, manage call routing, and interact with users through both voice and text interfaces. This capability positions it as a prime option for organizations aiming to elevate their customer engagement efforts, all while ensuring operational adaptability and efficiency. Additionally, the platform's user-friendly interface and extensive integration options make it accessible for various industries looking to enhance their communication strategies.

Kore.ai empowers businesses around the globe to leverage artificial intelligence for enhancing automation, boosting efficiency, and improving customer engagement via its sophisticated AI agent platform and user-friendly no-code development tools. Focused on automating work processes with AI, optimizing operations, and delivering smart service solutions, Kore.ai equips organizations with adaptable and scalable technology that accelerates their journey toward digital transformation. The company adopts a model-agnostic strategy, providing the flexibility needed to integrate various data sources, cloud infrastructures, and applications to cater to the unique requirements of different enterprises. With a proven history of success, Kore.ai has earned the trust of more than 500 partners and over 400 Fortune 2000 companies to advance their AI initiatives and foster innovation. Acknowledged as a frontrunner in the industry, bolstered by a vast portfolio of patents, it consistently strives to redefine the landscape of AI-driven solutions. Headquartered in Orlando, the company boasts a global footprint with offices in countries such as India, the UK, the Middle East, Japan, South Korea, and throughout Europe, ensuring that its clients receive extensive support. As it continues to innovate with state-of-the-art AI technologies, Kore.ai is playing a pivotal role in transforming enterprise automation and enhancing intelligent interactions with customers, paving the way for a future where AI integration is seamless and effective.

ContactSwing is an AI-driven voice assistant that can both place and respond to calls just like a person would. This innovative solution operates around the clock, providing a seamless calling experience without the need for any coding. With its advanced AI technology, the system guarantees that every inquiry is addressed and effectively captures all incoming interest. The AI call assistant promptly handles inquiries and organizes appointments, enabling your business to function continuously, day and night. Additionally, the AI Phone Agent streamlines repetitive processes, including follow-ups and scheduling, as well as answering frequently asked questions, thereby optimizing time management. ContactSwing's AI Agents empower you to: Make and receive calls at any hour Efficiently schedule appointments Follow up on potential leads Seamlessly integrate with your CRM or ATS Utilize the SMS AI Agent to send bulk text messages Employ the Email AI Agent for prompt email responses In doing so, ContactSwing enhances overall productivity and ensures that businesses remain competitive in a fast-paced environment.

Cognigy.AI is a sophisticated conversational AI platform tailored for enterprises, aimed at automating customer interactions across multiple channels, such as voice and chat. By utilizing cutting-edge natural language understanding (NLU) and large language models (LLMs), it allows companies to develop smart AI agents that engage in personalized, human-like dialogues. The platform's strong integration features enable it to connect effortlessly with existing contact center and CRM systems, thereby enhancing the orchestration of customer experiences. Additionally, Cognigy.AI introduces Agentic AI, which features autonomous, goal-driven agents capable of independent thought, adaptation, and collaboration with both AI and human agents, effectively managing intricate queries with agility and accuracy. This all-encompassing solution not only facilitates the streamlining of customer service operations but also boosts engagement levels and increases efficiency in addressing customer inquiries, ultimately transforming the way businesses interact with their clients. With its innovative tools and capabilities, Cognigy.AI positions organizations to thrive in the competitive landscape of customer service.

LiveKit serves as a dynamic platform for real-time communication, enabling developers to seamlessly incorporate video, voice, and data capabilities into their applications. By leveraging WebRTC technology, it supports a diverse range of frontend and backend frameworks. The platform’s network architecture is carefully crafted to deliver ultra-low latency, remarkable resilience, and the ability to scale extensively. With a globally distributed team managing an infrastructure that handles billions of audio and video minutes each month, LiveKit showcases its vast operational reach. It provides SDK support for all major platforms, allowing developers to customize their applications with a LiveKit client that is specifically designed for their preferred environment. Additionally, LiveKit offers the option for self-hosting at no expense, with no changes needed to existing code, since all tools and services operate under the Apache 2.0 open-source license. Among its many features, LiveKit includes single sign-on (SSO), role-based access control (RBAC), robust security features like end-to-end encryption, and tools for noise and echo cancellation, session recording, stream ingestion, and moderation, making it an excellent option for developers seeking comprehensive solutions. Overall, LiveKit emerges as a versatile and powerful choice for real-time communication needs, equipping developers with everything required to create highly engaging applications and foster robust user interactions.

Answering AI is an advanced service powered by artificial intelligence that operates your phone calls continuously, guaranteeing your customers receive timely support at all times. Setting up your virtual receptionist is a straightforward process; all you need to do is outline your preferences for call management, similar to creating a prompt for a conversational AI. The system seamlessly integrates with your existing phone numbers, calendars, and call forwarding settings, enabling the AI to manage scheduling, escalate intricate questions to your staff, and maintain synchronization across different platforms. Answering AI caters to a diverse array of industries, such as small businesses, law firms, e-commerce platforms, healthcare facilities, creative agencies, software-as-a-service providers, and remote teams. Its main features consist of a customizable smart call button for your website that reacts to user interactions, context-aware intelligence that customizes conversations based on the caller's online behavior, and intelligent routing that determines when to handle inquiries directly or bring in human experts. This all-encompassing system not only improves customer satisfaction but also boosts your team's productivity by reducing disruptions. By utilizing Answering AI, organizations can foster stronger relationships with their clients while streamlining their communication processes.

Genspark is a cutting-edge AI platform that simplifies the generation of content and the automation of tasks, offering powerful features like video and image creation, and deep research. The Genspark Super Agent plays a pivotal role, assisting users with a wide array of tasks such as selecting gifts, booking travel, making restaurant reservations, and generating comprehensive reports. With its user-friendly interface, Genspark allows you to automate and streamline workflows, creating high-quality, insightful content in a fraction of the time.

AgentVoice is an innovative platform that enables the creation of AI-powered voice agents, which can handle phone calls and execute various tasks such as scheduling appointments, sending messages, and updating customer relationship management systems without requiring any programming skills. Every interaction harnesses cutting-edge speech recognition technology to translate spoken language into text, employs a sophisticated language model to determine appropriate responses and actions, and utilizes an AI-generated voice that communicates in a fluid and natural way. These intelligent agents not only provide answers but also perform tasks in real time or after the call by leveraging actual data, memory functions, and access to various tools. Users can easily create no-code workflows that optimize CRM updates, schedule meetings, send follow-up communications, screen potential leads, manage voicemails, and filter out unwanted calls, all within a single phone conversation. The process of setting up an agent is incredibly swift, allowing users to develop and launch a fully operational agent in less than 30 minutes without the need for coding: one simply defines the agent's specifications, chooses a voice, integrates with over 200 native tools, utilizes low-code options, or employs a comprehensive API and webhooks, and then uploads or creates a customized script. With its intuitive interface and powerful functionalities, AgentVoice revolutionizes business communication over the phone, significantly boosting productivity and streamlining operations for various organizations. This transformation not only enhances customer interactions but also enables businesses to focus on their core activities while relying on efficient automation.

OpenAI has launched GPT-Realtime, its most advanced speech-to-speech model, accessible through the fully functional Realtime API. This innovative model generates audio that is not only strikingly natural but also rich in expressiveness, enabling users to customize aspects such as tone, speed, and accent with precision. It demonstrates an impressive capability to grasp intricate human audio signals, including laughter, and can fluidly switch languages mid-conversation while accurately interpreting alphanumeric data, like phone numbers, across different languages. With significant improvements in reasoning and instruction-following skills, it has achieved remarkable scores of 82.8% on the BigBench Audio benchmark and 30.5% on MultiChallenge. Moreover, it boasts enhanced function calling abilities that offer increased reliability, speed, and accuracy, reflected in a score of 66.5% on ComplexFuncBench. The model also supports asynchronous tool invocation, ensuring that conversations remain coherent even during lengthy discussions. Additionally, the Realtime API rolls out groundbreaking features, such as image input support, integration with SIP phone networks, links to remote MCP servers, and efficient reuse of conversation prompts, which collectively position it as an essential asset for advancing communication technology. This holistic enhancement in capabilities truly sets a new standard in the field.

Layercode is a cloud-oriented platform tailored for developers, streamlining the process of building production-ready voice AI agents with low latency by handling real-time infrastructure, thereby enabling developers to focus on the intricacies of their agents' logic; it manages aspects such as WebSockets, voice activity detection, global edge deployment, and the integration of voice models while offering comprehensive oversight of the agent’s cognitive processes, speech patterns, and interactions. This platform ensures fluid and natural voice communication with response times under a second and conversational dynamics that mimic human interactions, in addition to providing tools for tracking a variety of performance metrics like call quality, latency levels, and production errors. Layercode boasts effortless compatibility with modern TypeScript and Next.js frameworks, featuring intuitive CLI and SDK tools that facilitate straightforward text communication. Furthermore, it allows developers to avoid vendor lock-in by enabling seamless transitions between various voice and transcription model providers, promotes full adaptability by supporting the integration of custom AI agent backends, and accommodates deployment across multiple platforms including web, mobile, and telephony systems. Ultimately, Layercode significantly boosts both the flexibility and efficiency of creating advanced voice-driven applications, paving the way for innovative solutions in the voice technology landscape. With its robust capabilities, Layercode stands as a vital resource for developers seeking to elevate their voice AI projects.

Fluents.ai introduces an advanced sales assistant powered by artificial intelligence that quickly connects with potential clients through its intuitive and empathetic conversational skills. This cutting-edge tool enables businesses to broaden their reach while preserving a personal touch, effectively acting as a digital sales representative. It seamlessly integrates with existing software platforms, facilitating human-like interactions in real-time while collecting vital information, addressing questions, and ensuring smooth handoffs to human representatives when necessary. Additionally, the platform offers real-time dashboards, comprehensive conversation logs, and advanced reporting features, delivering crucial insights for refining sales strategies. By automating time-consuming tasks like scheduling appointments and handling follow-ups, the AI assistant enhances overall productivity, allowing sales teams to focus on their most important objectives. Moreover, its capability to operate around the clock ensures that no potential leads are overlooked, ultimately contributing to increased business revenue. This powerful technology not only optimizes processes but also significantly bolsters the effectiveness of sales operations, paving the way for sustained growth and success.

Experience automated voice testing and monitoring like never before. Quickly evaluate your AI voice agent with thousands of simulated users in just minutes, simplifying a process that typically requires extensive effort. Achieving optimal performance from AI voice agents can be challenging, as even minor adjustments to prompts, function calls, or model providers can significantly impact results. Our platform stands out by supporting you throughout the entire journey, from development to production. Hamming empowers you to store, manage, and synchronize your prompts with your voice infrastructure provider, achieving speeds that are 1000 times faster than conventional voice agent testing methods. Utilize our prompt playground to assess LLM outputs against a comprehensive dataset of inputs, where our system evaluates the quality of generated responses. By automating this process, you can reduce manual prompt engineering efforts by up to 80%. Additionally, our monitoring capabilities offer multiple ways to keep an eye on your application’s performance, as we continuously track, score, and flag important cases that require your attention. Furthermore, you can transform calls and traces into actionable test cases, integrating them seamlessly into your golden dataset for ongoing refinement.

Johnni AI stands out as the perfect virtual receptionist, ensuring that you’ll never overlook another phone call. This advanced AI-powered assistant takes responsibility for your business communications, adding a personal touch to appointment scheduling and providing summaries of discussions to help you reclaim your precious time. Seamlessly integrating with your existing software and CRM platforms, Johnni AI adeptly handles inquiries, bookings, and phone calls with ease. Designed to cater specifically to the distinct requirements of your business, Johnni AI allows you to focus on more pressing tasks by optimizing call management. Available around the clock, this virtual receptionist manages calls, organizes appointments, provides discussion summaries, and offers customizable interactions, making sure that every customer feels valued and recognized. Moreover, by automating the complex aspects of call handling and appointment scheduling, Johnni AI ensures a consistently exceptional experience for your clients throughout the day and night. As a result, your business can flourish while delivering remarkable customer service that leaves a lasting impression. This innovative solution not only enhances efficiency but also fosters stronger relationships with your clientele.

Kipps.AI is a powerful platform designed specifically for businesses that wish to develop and deploy AI agents across multiple channels, including voice, chat, and WhatsApp, effectively handling millions of interactions with a degree of human-like intelligence and reliability suited for large-scale use. This innovative solution allows organizations to tailor agents for a variety of functions such as lead qualification, appointment setting, and customer service, all while integrating smoothly with CRM platforms, telephony systems, and an array of other operational tools. With more than 100 pre-built integrations featuring well-known services like Salesforce, HubSpot, WhatsApp, Slack, and Zoom, Kipps.AI provides an extensive suite of functionalities including in-depth analytics for both models and agents, transcription of conversations, real-time call monitoring, sentiment analysis, and a mechanism to transfer conversations to human agents when needed. The platform also prioritizes security, meeting enterprise-level compliance standards with certifications like SOC 2 Type II, ISO 27001, and HIPAA-readiness, in addition to adhering to PCI DSS Level 1 requirements and offering zero data retention options, making it a reliable choice for companies aiming to enhance their customer engagement efforts. Moreover, Kipps.AI's cutting-edge technology positions it as more than just a tool; it acts as a strategic ally for companies looking to revolutionize and refine their communication strategies, ensuring they remain competitive in a rapidly evolving marketplace. This emphasis on innovation and adaptability further illustrates Kipps.AI's commitment to supporting businesses in achieving their operational goals.

Inagent represents a state-of-the-art conversational AI solution specifically designed for contact centers, showcasing autonomous AI agents that are proficient in understanding, reasoning, and handling complex customer interactions across both voice and text channels within a robust omnichannel environment. By leveraging generative AI and contextual insights, these virtual agents effectively interpret messages, make insightful decisions, and execute tasks related to business systems such as CRM and ERP platforms to achieve established operational goals. This platform enables businesses to create specialized teams of AI agents trained across various industry sectors, ensuring accurate and efficient management of tasks including customer support, sales, appointment scheduling, and claims processing, while also allowing seamless handoffs of conversations between AI agents and human representatives when required. A notable aspect of Inagent is its swift deployment capability, enabling activation in mere minutes through an easy-to-use no-code interface that requires only basic training using existing business knowledge. Additionally, this groundbreaking technology not only boosts operational efficiency but also significantly improves customer satisfaction by providing swift and precise responses, ultimately fostering a more engaging customer experience. Moreover, by integrating advanced analytics, Inagent can continually optimize its performance, adapting to evolving customer needs and preferences over time.

In 2024, the launch of the OpenAI Realtime API marked a significant advancement for developers, enabling them to create applications that facilitate real-time, low-latency communication, such as conversations that occur entirely via speech. This groundbreaking API serves a wide range of purposes, including enhancing customer support systems, powering AI-based voice assistants, and offering innovative tools for language education. Unlike previous approaches that required the use of multiple models to handle tasks like speech recognition and text-to-speech, the Realtime API consolidates these capabilities into a single request, thereby improving the efficiency and fluidity of voice interactions within applications. Consequently, developers are empowered to craft user experiences that are not only more interactive but also more dynamic, reflecting the evolving demands of technology in user engagement. This integration ultimately paves the way for a new era of communication-driven applications.