Best Conversational AI Platforms for 2025

Conversational AI solutions–including chatbots, voice assistants, and virtual agents, have become extraordinarily popular over the last few years. The global conversational AI market is expected to grow at a CAGR of 22%, reaching almost US$14 billion by 2025. 

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Data from various conversational AI vendors showed that the volume of interactions handled by conversational agents increased by as much as 250% in multiple industries. These solutions are already delivering significant value for many organizations. 

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Those currently using conversational AI have great expectations for the tech innovation in particular:

• 87% say conversational AI improves productivity
• 80% say these capabilities will be table stakes in the near future 
• 41% say that if companies don’t adopt these capabilities, they will fall behind

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In fact, 76% say that conversational AI/ chatbot capabilities are revolutionizing business communications, and 72% believe these capabilities will increase company profitability and revenue and lower company risks. 

The internet is full of “conversational AI” tools and finding the right ones can become difficult. That’s why we have arranged our top 14 conversational AI platforms that you can choose from to get started. 

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Key Factors to Consider When Choosing a Conversational AI Platform 

While conversation is natural and intuitive, it's also a complex construct. Even the simplest interaction has layers of richness and nuance. Every time a customer interacts with a brand, they bring purpose, problem, need or a question. 

Not selecting a conversational AI around the needs of your customers can hamper customer experience. That’s why it's important to identify features before considering a conversational AI platform that can seamlessly mimic human interactions and deliver customer-centred conversations. 

• Industry expertise: Not all industries are equal. They have different use cases and requirements. A chatbot provider that doesn't have clients similar to your industry may not be able to provide the kind of conversational coverage the brand desires. 

To get a better idea of the industry experience of your chatbot provider, consider asking them the following questions:

• Which industries do your clients usually come from?
• How accurate is your conversational AI in answering questions?
• Are the clients handling support queries in similar ways as you want?

This will give you an understanding of how well the conversational chatbot will perform for your business. 

• Authentic conversations:  An AI bot platform that gives you advice on making an empathetic and natural bot increases your chances of success. Deep insights into the needs, expectations, and emotional states of users are key. It’s also vital to understand how conversations work in theory and practice. 

Getting the combination right will help you design a conversational AI tool that’s ready for and can deal with human unpredictability in a natural way. Speaking to a good AI agent shouldn't feel like talking to a robot.

For instance: Synthflow AI offers 11Labs integrations to enhance its AI voice capabilities. You can choose from hundreds of different voices or clone your voice. Syhthflow guardrail top LLMs like Llama and OpenAI's GPT-3 through GPT-4o. It also offers multilingual and accents—from Australian and British to Argentinian Spanish to support effective communication. This makes it a versatile tool for global businesses

Moreover, customer service automation powered by AI is transforming how brands handle customer interactions, allowing businesses to resolve queries faster while improving user satisfaction.

• Ease of integrations: Integrated conversational AI agents are ten times more exciting than stand-alone, unconnected bots. Integrating with CMS, CRM, knowledge base, customer service tools, and more will help your bot personalize each customer interaction. 

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Ask your conversational AI providers about future integrations, timelines and how receptive they are to custom requests. 

• Check compliance and security: A grade-A conversational AI doesn’t only offer great features; it also comes with built-in compliance and security features, guaranteeing data privacy for end-users and assurance of platform security and integrations. 

Most AI bot platforms are SaaS solutions, which means they essentially check where data is hosted and if data centres are certified by industry standards. Here’s a list of compliance certificates necessary when choosing an conversational AI:

• SOC 2
• HIPAA
• GDPR
• CCPA
• ISO/IEC 27001
• PCI DSS

• Scale and personalization: Scale is important for all businesses. Whether you are a young early-stage startup or a big enterprise, your conversational AI agent should have the bandwidth to answer all of them without compromising on quality. Flexible pricing plays a crucial role in this. Pricing models, such as pay-as-you-go or tiered plans, allow organizations to start small and scale up as their conversational AI demands grow, minimizing financial risk.

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While the scale is important to ensure that customer experience is not affected, it's crucial to add personalization to customer interactions. It could be speaking the customer’s preferred language, having previous chat history, or sharing recommendations based on past preferences. Additionally, contact center automation enables businesses to streamline customer interactions, reduce wait times, and enhance overall service efficiency by automating repetitive tasks.

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Best Conversational AI Platforms for 2025

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For this post, we evaluated several chatbots based on their ability to handle tasks like image generation, providing detailed explanations and information gathering. We assessed their responsiveness, creativity and accuracy. 

Here are our top picks on the best conversational AI platforms according to their uses and capabilities:

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Syntflow AI

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Synthflow’s no-code and enterprise-ready capabilities set it apart. It allows users to create and customize voice agents and processes within the tool. This flexibility allows users to optimize their voice agents according to their business needs. 

Synthflow uses unique custom models that provide customized performance and accuracy by owning and deploying models for particular applications and sectors. This helps the platform to grow with users without sacrificing speed or efficiency, whether a firm is just starting or expanding rapidly.

Synthflow AI features: 

• Integration is a key strength of Synthflow AI. It can seamlessly connect with popular apps and CRM tools like HubSpot, GoHighLevel, Zapier, and Make, helping users expand their capability and providing flexibility. 

• Businesses looking for industry-specific templates benefit from Synthflow AI. For instance, Synthflow AI offers a pre-designed framework for real estate, recruiting, automotive, healthcare, solar, and other sectors, speeding up adoption and lowering expenses.

• Synthflow offers high-level customization with options for configuring prompts, deployment, voice selection, and advanced settings like response speed and custom greetings.

• Synthflow offers a user-friendly, no-code platform with a drag-and-drop interface to help businesses launch their voice agents without any technical experience. 

Synthflow AI pricing:

Synthflow AI charges $0.08/minute and comes with three paid plans-

• Starter: $29/month (50 minutes)
• Pro: $450/month (2500 minutes)
• Growth: $900/month (6000 minutes)
• Agency: $1400/month (6000 minutes)

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ChatGPT

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ChatGpt is a cutting-edge conversational AI assistant powered by Open AI. It stands out from competitors with its ability to understand and communicate in natural, human-like frequency. The platform is trained on a massive amount of data to function. Open AI claims that they’ve fed Chatgpt with 300 million from websites, books, articles, and posts.

In just five days, ChatGPT crossed 100 million users, making it the fastest-growing conversational AI in history. 

ChatGPT’s Features: 

• ChatGPT is really versatile. It can help you with a lot of different things, including coding, writing, math, analysis, research and creative projects. Its advanced natural learning and machine learning models can help you create well-written, logical content that is suited to the demands of all users. 

• By analyzing user history, ChatGPT can personalize responses based on the user’s preferences. This feature is particularly useful in e-commerce and customer service, where personalized responses can improve customer satisfaction.

• ChatGPT can understand and respond in over 50 languages. With its ability to understand context and translate language, ChatGPT can overcome language barriers and facilitate smooth conversations. 

ChatGPT Pricing:

OpenAI offers several ChatGPT subscription plans to cater to different user needs:

• Free: $0/month
• Plus: $20/ month
• Pro: $200/month
• Team: $ 30 per user/month billed monthly
• Enterprise: Custom pricing

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Zendesk AI Agent 

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Zendesk’s newly launched AI agents are designed to autonomously handle a range of customer service requests–from basic FAQs to complex queries. It seamlessly integrates with the Zendesk ticketing system, providing a quick and efficient way to handle customer queries and transfer them to human agents when necessary. 

Zendesk’s Features:

• You can put Zendesk AI agents on various support channels like chat, messaging, email, slack or more. This way Zendesk AI agents provide instant support to your customers anytime, anywhere–shrinking ticket requests. 

• Zendesk answer bot protects agent’s time by collecting customer information like name, email, issue type and more. It can map and pre-populate important information from a customer into existing ticket fields.  

• Zendesk’s AI agents boost customer experience by providing human agents with all relevant information, including past interactions, call transcripts, contextual suggestions and more. This way, customers don’t have to repeat themselves when talking to different agents. 

 Zendesk’s Pricing:

Zendesk customers only pay for successful AI query resolutions rather than a flat fee per agent.

Businesses can purchase additional AI agent resolutions at $1.50 each, with potential discounts for larger volumes. A pay-as-you-go option is also available at $2 per resolution, providing flexibility for businesses unsure of their baseline usage. 

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Retell AI

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Retell is a middleware layer that allows you to bring your own LLM and phone provider. For early- stage companies that have a quick project to put up and have an assistant  API or other LLM, Retell makes it easier to connect to do phone calls. Overall, Retell AI excels in providing a low-code infrastructure where you can access powerful APIs for agent creation, updates, and initiating phone calls. 

Retell AI’s features:

• You can create agents that can handle single as well as multiple prompts in a conversation. 

• Retell AI is easy to build and test, quicker if you utilize its pre-built templates. 

• Retell AI offers multilingual support with access to over 7 languages. 

Retell AI’s Pricing:

For those requiring a complete setup of telephony, LLM agent, knowledge base and phone numbers, total costs generally range between $0.13 and $0.31 per minute, with monthly totals varying based on minutes used and features selected.

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IBM Watson Assistant

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IBM Watson Assistant is an AI-powered conversational solution that is ideal for different types of businesses. It uses advanced Natural Language Processing (NLP) to understand user intent and provide accurate human-like responses. The platform supports both voice and text-based interactions, making it versatile for various use cases. 

IBM Watson Assistant Features: 

• IMP Watsonx offers a user-friendly interface with a drag-and-drop conversation builder and pre-built templates. This helps developers to craft personalized, engaging and intuitive conversational experiences. 

• Watsonx’s assistant’s cutting-edge technology allows for seamless integration with various channels and devices, enabling businesses to reach their customers wherever they are. 

• No coding skills are required to build a chatbot with Watsonx Assistant. You can train your chatbots with only a few questions or use its chatbot templates to get started in minutes. 

IBM Watson Assistant Pricing: 

IBM Watson offers three pricing plans:

• Lite: $0
• Plus: Starting at $140/month
• Enterprise: Custom pricing 

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Yellow.ai 

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Yellow.ai is an enterprise-grade conversational AI platform for leading brands, including Sony, Hyundai, Domino’s and more. It’s built on a multi-LLM architecture that is trained through billions of conversations on this dynamic automation platform. Yellow.ai is fluent in over 135 languages and supports over 35 channels. You can reduce operating costs by automating conversations across email, text and voice. 

Yellow.ai Features: 

• You can personalize each customer interaction by integrating your existing CRM and ticketing system with your inbox. Businesses can further leverage Yelow.ai’s Customer Data Platform (CDP) to get user insights in real time. 

• Enterprises can create and maintain a knowledge base for customers to find solutions to their queries without involving an agent. Plus, you can include an internal knowledge base for your human agents. 

• Yellow.ai is a fully integrated SaaS product that offers 100+ integrations for smooth integrations to your favourite tools. 

Yellow.ai Pricing:

Yellow.ai offers two plans, including:

• Free: $0/month
• Enterprise: Custom pricing

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Good call 

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Developed with the aim of simplifying phone-based transactions, Goodcall leverages the power of GPT and NLP algorithms to engage in human-like interaction with recipients. You can teach your AI agent custom responses based on common customer queries, and it suggests new skills based on caller questions to continuously improve. 

Goodcall’s Features: 

• Goodcall allows users to schedule outbound calls at pre-defined intervals, manage to call queries and automate ups based on specific triggers. 

• Goodcall integrates with popular CRM systems like Salesforce and Hubspot seamlessly to help with data synchronization and lead management. 

• Users can customize call scripts, responses and greetings to align with the brand voice. 

Goodcall’s Pricing:

Goodcall offers subscription-based pricing starting at $59/month. 

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Amazon Lex 

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Amazon Lex is a modern service tool powered by Amazon Web Services (AWS) that is used for building conversational and interactive chatbots and virtual assistants. You can integrate Amazon Lex to answer complex questions using data enterprise knowledge repositories. Quickly build and deploy chatbots or voice bots to mobile devices and other chat services so users can pause and restart multi-turn conversations as needed.

Amazon Lex Features: 

• Amazon Lex provides seamless integration with other AWS services for scaling and customizing deployments as per business needs. This integration simplifies the deployment process and reduces the time-to-market for AI-powered solutions. 

• You can seamlessly deploy your text and voice chat bots, AI bots across mobile devices, and chat services like Facebook Messenger, Slack, Kik, or Twilio SMS. Pre-built integrations with other contact centre solutions are also available. 

• Amazon Lex simplifies bot design by utilizing existing conversation transcripts. The Amazon Lex Visual Conversation Builder (VCB) allows everyone to contribute to bot design and capability so you can launch AI-powered quickly. 

Amazon Lex Pricing:

Amazon Lex works on a pay-as-you-go pricing model, ensuring cost-effectiveness and accessibility for businesses of all sizes.

You can try Amazon Lex for free. You can process up to 10,000 text requests and 5,000 speech requests or speech intervals per month at no cost for the first year.

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Vocode.dev

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Vocode.dev is the only open-source voice assistant tool in this list. This platform provides tools and abstractions to build voice agents on top of LLMs. With Vocode.dev, you can create a system that answers/makes phone calls, acts as a personal assistant, joins Zoom meetings and more. 

Vocode.dev’s Features: 

• Vocode.dev excels in real-time, two-way conversations. It adequately handles the complexities of a conversation, such as interruptions, slang, and endpoints. 

• The platform supports multiple languages, allowing businesses to cater to a larger audience by communicating customer’s native language. 

• Vocode.dev seamlessly integrates with leading speech-to-text, text-to-speech, and large language models, allowing users to choose providers that best suit their needs. 

Vocode.dev’s Pricing: 

Like Play AI, Vocode.dev also offers a free plan along with two paid plans, including:

• Developer:$25 per month
• Enterprise: Custom pricing

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Slang AI 

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Slang AI is designed specifically for restaurants and is built keeping both operators and customers in mind. This AI voice assistant allows restaurants to take reservations, answer questions and satisfy callers with appropriate answers. Slang AI is easy to onboard, install, and get started with, ensuring that the restaurant remains operational 24/7. 

Slang AI’s Features:

• Slang AI provides instant answers to customer queries, reducing customer wait times and handling a high volume of calls efficiently. 

• The voice assistant provides real-time analytics and reporting, helping restaurant businesses monitor performances, understand behaviour and optimize their operations. 

• Slang AI integrates with various POS systems and restaurant reservation apps seamlessly to enhance customer booking experience. 

Slang AI’s Pricing: 

Slang AI offers two paid plans starting at $299 per month. 

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Calldesk

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Calldesk works best for businesses that want to automate repetitive customer service calls with AI-powered voice agents, allowing the support team to focus on high-level interactions. When the AI voice agent encounters a query that they couldn’t solve, it seamlessly handles it to a human agent, maintaining overall customer satisfaction. 

Calldesk Features:

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• Calldesk’s AI voice agents utilize advanced NLP to understand and process natural language, making the conversation more human-like. 

• The platform offers a variety of pre-optimized use cases like caller identification, customer follow-up and more to quickly implement effective solutions tailored to their specific needs. 

• Calldesk supports over 29 languages natively, making it a versatile solution for businesses with a global customer base. 

Calldesk Pricing: 

Contact the support team for a customized pricing plan. 

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Phonely.AI 

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Developed by a team of Ph.D. AI researchers and audio engineers, Phonely.AI is leading the way in voice assistance. Setting up Phonely.AI is quick and easy; simply connect your website to build an AI voice agent in minutes. Phonely can transfer calls, take appointments, and handle product returns, all in real time. 

Phonely.AI features: 

• Phonely.AI offers HIPAA compliance, safeguarding user information and maintaining data security. 

• The AI can automatically follow up with recipients to confirm appointments, gather feedback and handle routine tasks.

• Phonely. AI provides detailed call transcriptions and AI-powered analytics, helping businesses gain insights into call performance and customer interactions. 

Phonely.AI pricing:

Phonely.AI offers four paid plans, including:

• Starter: $34.99/month
• Professional: $99.99/month
• Business: $499.99/month
• Enterprise: Custom pricing

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Bland AI 

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Bland AI is a phone calling system that leverages its API to seamlessly send and receive AI phone calls. The system includes live call transfers, allowing calls to be transferred to a human agent when the predefined criteria are met. Bland supports various use cases including AI answering machine, AI telemarketing, AI receptionist, and AI IVR. 

Bland AI features:

• Using Bland you can build AI phone agents that can manage multiple tasks like answering one-tier customer support calls to qualifying inbound leads. 

• Bland AI offers custom tools that let your AI agents interact with any web API mid call. It can do things like sending a message, scheduling an appointment, or updating CRM. 

• Bland AI lets you integrate with thousands of apps you use everyday through Zapier. 

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Bland AI pricing: 

Bland AI offers usage-based pricing starting at $0.09/minute. 

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Play AI 

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Play AI is an AI voice technology that is accessible and easy to adopt. The platform allows users to build delightful AI voice agents for various use cases. Play AI API provides developers an AI voice stack that can be easily integrated into any AI agent, application or device.

Play AI’s Features: 

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• Through Play.ht, users can choose from over 600+ AI voices that create ultra realistic text-to-speech voice overs. 

• You can easily upload documents, audio recordings or connect with your help desk and your voice agents will be able to learn about your company. 

• Play AI offers seamless integration with scheduling tools, customer support, CRMs and lead engagement and qualification software. 

Play AI’s Pricing:

Play AI offers a free plan where you can create unlimited agents, 30 minutes of voice calls and API access. 

Beside this Play AI offers four paid plans:

• Pro: $20 per month
• Business: $99 per month
• Growth: $499 per month
• Enterprise: Custom pricing 

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Conclusion & Actionable Takeaways

By offering businesses more personalized experiences, efficiency, and operational scalability than ever before, AI-powered voice bots are reshaping the world of customer service. With their ability to handle complex inquiries, respond with empathy, and continuously learn from interactions, these AI bots are transforming traditional customer service into a seamless 24/7 powerhouse. 

And, if you’re wondering about your next steps as a business owner, think of a conversation AI solution that provides a seamless conversation between a brand and its customers. 

Synthflow's no-code, drag-and-drop interface allows users to set up a voice agent in minutes without needing any technical knowledge or coding ability. It can seamlessly handle a large volume of calls across all timelines and languages. 

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Want to try a free demo to see how you can replace your traditional call centres with AI voice bots? Sign up here. 

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