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Top Conversational AI & Voice Assistant Development Companies

Conversational AI development firms build software that talks with customers and staff in natural language, by text or voice: AI voice agents that answer and route calls, IVR replacements, in-app assistants, voice interfaces for devices, and internal assistants that query company systems. The work joins speech recognition, a language model, text-to-speech and CRM or scheduling integrations. Contact centers, clinics, banks and retailers hire them to cut hold times or cover after-hours calls.

Ask the firms below for recorded calls or live demos from production deployments, with containment and escalation rates measured there. Compare how they handle latency, interruptions, accents and handoff to a human agent.

How this list is built

We evaluate companies on verified profile data: services, pricing, locations, and portfolio. Client reviews are being collected. We may earn a fee for some placements. How we rank and verify

List of the Best Conversational AI & Voice Assistant Development Agencies

  1. BOT Shreyasi logo
    BOT Shreyasi
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    BOT Shreyasi is a Conversational AI that streamlines the HR process by fully automating the hiring procedure, covering everything from candidate screening to employee onboarding.

    Highlights

    10-49

    Employees

    Manali, In

    Services Provided
    100% Conversational AI & Voice Assistant Development
    AI Summary

    “BOT Shreyasi is a Conversational AI platform that automates HR processes, enhancing hiring efficiency by managing candidate screening through employee onboarding seamlessly.”

  2. Mindsay logo
    Mindsay
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    Mindsay simplifies and streamlines customer interactions through conversational automation. We assist customer service teams in addressing typical obstacles, enabling them to automate customer inquiries, reduce lengthy processes, and make the best use of their human resources. Whether dealing with s

    Highlights

    $10,000+

    Min Project Size

    $100-149/hr

    Avg Hourly Rate

    10-49

    Employees

    Paris, Ile De France, Fr

    Services Provided
    100% Conversational AI & Voice Assistant Development
    AI Summary

    “Mindsay provides conversational automation solutions that enhance customer service by automating inquiries and complex interactions, optimizing resources, and reducing operational costs across industries.”

  3. Votex AI Solutions logo
    Votex AI Solutions
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    **YOUR CHALLENGE** You are facing repetitive support inquiries, unconverted leads, and lost sales—particularly during off-hours—while your team is already overextended. **OUR SOLUTION** We create AI-driven chatbot systems that function round the clock to answer inquiries, capture leads, and enhance

    Highlights

    $1,000+

    Min Project Size

    2-9

    Employees

    Services Provided
    100% Conversational AI & Voice Assistant Development
    AI Summary

    “Votex AI Solutions develops customized AI-driven chatbot systems that automate support, capture leads, and boost conversions across platforms, enhancing business efficiency for mid-sized companies.”

  4. Affiniti AI logo
    Affiniti AI
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    We offer Conversational AI solutions designed to digitize and scale intellectual capital. Established by PhDs in Computer Science and fueled by cutting-edge research, we assist businesses in delivering customized and tailored customer experiences.

    Highlights

    $75,000+

    Min Project Size

    $50-99/hr

    Avg Hourly Rate

    2-9

    Employees

    London, England, Gb

    Services Provided
    80% Conversational AI & Voice Assistant Development
    20% Machine Learning Model Development
    AI Summary

    “Affiniti AI delivers advanced Conversational AI solutions developed by PhD experts, enabling businesses to digitize intellectual capital and provide personalized customer experiences at scale.”

  5. L
    Limerine Software Pvt Ltd
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    Limerine is a company specializing in Conversational AI Automation. Our Rambutan chat platform operates on websites and within mobile applications, integrating with various channels such as WhatsApp, Telegram, and social media through a shared inbox. Our no-code chatbot builder enables users to crea

    Highlights

    $1,000+

    Min Project Size

    < $25/hr

    Avg Hourly Rate

    2-9

    Employees

    Gurugram, Haryana, In

    Services Provided
    75% Conversational AI & Voice Assistant Development
    20% Custom AI Chatbot Development
    5% AI Strategy & Roadmap Consulting
    AI Summary

    “Limerine Software Pvt Ltd. specializes in Conversational AI Automation with its Rambutan platform, enabling seamless multi-channel communication, no-code chatbot creation, and integrated enterprise interactions.”

  6. CallBotics logo
    CallBotics
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    CallBotics was born from 18 years of firsthand experience in high-stakes, voice-driven operations, where we witnessed how overwhelmed teams, delays, and rising costs quietly eroded performance and trust.Built from the inside, not the sidelines, CallBotics is an enterprise-grade Conversational AI Voi

    Highlights

    $100,000+

    Min Project Size

    < $25/hr

    Avg Hourly Rate

    50-249

    Employees

    Dallas, Texas, Us

    Services Provided
    30% Custom AI Chatbot Development
    70% Conversational AI & Voice Assistant Development
    AI Summary

    “CallBotics offers an enterprise-grade Conversational AI Voice Agent platform that autonomously manages high-volume calls, improves operational efficiency, reduces costs, and integrates seamlessly with existing systems.”

  7. Rabbit & Pork logo
    Rabbit & Pork
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    Rabbit & Pork is an agency specializing in Voice Experience. We craft brand strategies with voice at the core of the user experience. As voice technology transforms our interactions with the internet, digital content, brands, and one another, it presents an incredibly thrilling opportunity. Rabbit &

    Highlights

    $5,000+

    Min Project Size

    $100-149/hr

    Avg Hourly Rate

    50-249

    Employees

    Services Provided
    30% Custom AI Chatbot Development
    70% Conversational AI & Voice Assistant Development
    AI Summary

    “Rabbit & Pork specializes in voice-centered brand strategies, offering data-driven consulting and execution services like Alexa Skills development to optimize brands' voice presence and engagement.”

  8. CallmAi logo
    CallmAi
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    CallmAi transforms phone calls into valuable opportunities utilizing intelligent, multilingual AI voice agents. Our agents communicate naturally, provide immediate responses, and are available 24/7 to handle calls, qualify leads, schedule appointments, and assist customers in various languages, incl

    Highlights

    $5,000+

    Min Project Size

    2-9

    Employees

    Services Provided
    10% Custom AI Chatbot Development
    10% Generative AI
    70% Conversational AI & Voice Assistant Development
    10% AI Strategy & Roadmap Consulting
    AI Summary

    “CallmAi offers intelligent, multilingual AI voice agents that handle calls, qualify leads, and schedule appointments 24/7, serving diverse business needs with scalable plans and partnership opportunities.”

  9. Aberto logo
    Aberto
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    Aberto.ai is a company specializing in AI automation that aims to revolutionize customer communication for businesses. It offers smart, human-like voice agents that streamline both inbound and outbound calls, assisting companies in efficiently handling lead generation, appointment booking, and custo

    Highlights

    $1,000+

    Min Project Size

    $25-49/hr

    Avg Hourly Rate

    10-49

    Employees

    Services Provided
    30% Custom AI Chatbot Development
    70% Conversational AI & Voice Assistant Development
    AI Summary

    “Aberto specializes in AI-driven automation, providing smart voice agents that enhance business customer communication through efficient lead generation, appointment booking, and support services.”

  10. Ragfish AI logo
    Ragfish AI
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    Ragfish.ai is an AI-powered platform that helps businesses build intelligent AI assistants trained on their own data, documents, websites, and knowledge bases. Our technology uses Retrieval-Augmented Generation (RAG) to deliver accurate, context-aware responses and automate customer and business

    Highlights

    10-49

    Employees

    Chennai, Tamil Nadu, In

    Services Provided

    No services available

    AI Summary

    “No AI summary available for this company yet.”

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Buyer's guide

Hiring Conversational AI & Voice Assistant Development companies

What the work covers, how to judge a partner and what drives the price.

What conversational AI and voice assistant developers build

A project starts by choosing the conversations worth automating, often by mining call recordings and chat logs: appointment booking, order status, password resets, lead qualification, triage. The firm designs dialog flows and fallback paths, then assembles the stack: speech-to-text, an LLM or intent engine such as Dialogflow, Amazon Lex or Rasa, retrieval over your knowledge base, text-to-speech voices, and telephony through Twilio, Genesys or Amazon Connect.

Integration is usually the largest piece: the assistant must read and write to the CRM, EHR, booking or order systems to resolve requests rather than just answer questions. Testing covers accuracy, response latency, barge-in, noisy lines and adversarial prompts. Engagements run as a pilot on one use case followed by rollout, and most firms offer a monthly support plan to tune prompts, review transcripts and add new intents.

Chapter 1 of 3
FAQ

Conversational AI & Voice Assistant Development FAQs

Short answers to what buyers ask before hiring a Conversational AI & Voice Assistant Development company.

Question not covered? Ask our team

It designs, builds and maintains assistants that understand and respond in natural language by chat or voice, connected to the business systems they need to complete tasks. Typical projects are AI phone agents, IVR replacements, website and app assistants, and voice features inside products.

A rule-based chatbot follows scripted buttons and keywords, while conversational AI understands free-form language, keeps context across turns and can work by voice. Modern assistants use large language models grounded in company data. Buyers who only need a text widget on a website may find a custom chatbot developer simpler and cheaper.

Most firms listed set a minimum project of $1,000 to $10,000, and enterprise voice deployments often start at $25,000 or $50,000. Budget separately for usage-based running costs such as speech, LLM and telephony minutes, which scale with call volume.

It depends on integrations and testing more than on the AI itself. A pilot that answers common questions from a knowledge base goes live much sooner than an agent that books appointments, verifies identity and writes to a CRM. Compliance review and testing on real call traffic usually set the timeline.

Healthcare is the largest group listed, followed by IT, financial services, ecommerce, business services, education, real estate and retail. Clinics automate scheduling and reminders, banks handle balance and card queries, and retailers answer order and return questions around the clock.

Ahmedabad, London, Bengaluru, Warsaw and New York host the most firms in this listing, with Mumbai, Gurugram and Kyiv also active. For voice work, check that the team has tested the accents and languages your callers actually use.

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