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Project: AI Voice Agent + WhatsApp + Website Chatbot Platform Hi, I'm looking for an experienced AI developer to build a platform similar to Bland AI / Vapi / Retell AI, where businesses can create AI receptionists and customer support agents. Core Features Required AI Voice Calling Agent Inbound and outbound calls Natural human-like conversations Appointment booking and lead qualification Call recording and transcripts Whatsapp Automation Send and receive WhatsApp messages Continue conversations after calls Automated follow-ups Media and document support Website Chatbot Embeddable chatbot widget Knowledge base integration Lead capture and qualification AI & Voice Features OpenAI integration Voice cloning Multiple voices Multi-language support CRM & Integrations Google Calendar Calendly HubSpot / Salesforce Webhooks & APIs Dashboard User login/signup Agent creation using prompts Call analytics Conversation history Usage tracking Subscription billing Example Use Cases Hospitals (appointment booking) Hotels (reservations) Gyms (membership enquiries) Real estate (lead qualification) Tech Stack (Open to Suggestions) [login to view URL] Node.js OpenAI Twilio / Exotel WhatsApp Business API Supabase / PostgreSQL Stripe / Razorpay Deliverables Complete SaaS platform Admin dashboard User dashboard Source code ownership Deployment support Please share: Similar projects you've built Recommended tech stack Timeline Estimated budget
Project ID: 40535198
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34 freelancers are bidding on average ₹27,093 INR for this job

Hi, I'm a full-stack AI developer with hands-on experience building voice agents and chatbots on top of OpenAI, Twilio and WhatsApp Business API - very close to what Bland/Vapi/Retell offer. My approach: - Voice agent: real-time STT->LLM->TTS pipeline with Twilio for inbound/outbound calls, recordings + transcripts, appointment booking and lead qualification - WhatsApp automation: two-way messaging via WhatsApp Cloud API, post-call follow-ups, media/document handling - Website chatbot: embeddable widget with RAG over your knowledge base for lead capture - AI/voice: OpenAI integration, multi-voice + voice cloning (ElevenLabs), multi-language - Integrations: Google Calendar, Calendly, HubSpot/CRM via webhooks + n8n - Multi-tenant dashboard so businesses self-create agents I can start with the voice+booking core, then layer WhatsApp and chatbot. Quick question: do you want a multi-tenant SaaS (many businesses self-serve) or a single-business deployment for now?
₹28,000 INR in 30 days
4.7
4.7

With a deep understanding of your project requirements and a decade-long career encompassing AI Development, OpenAI, and PHP, I am genuinely excited to bring my expertise to the table for your AI-Based Customer Support Platform. Having built several similar platforms in the past, I'm confident in my ability to deliver a functional, scalable, and user-friendly solution within your estimated timeline and budget. What sets me apart from other developers is more than just skills; it's my approach. Beginning by understanding your business objectives, I ensure that my solutions are tailored to your needs. As an open and reliable communicator who delivers on time without compromising quality, I aim to minimize the back-and-forth and maximize your satisfaction. In addition, I have hands-on experience with Twilio and can confidently handle all aspects of integrating its service for WhatsApp automation in line with your project demands. Rest assured, should you choose me for this project, you can rely on clean, scalable code that won't compromise maintainability or security. Let's get started on building an incredible platform together that goes beyond expectations!
₹12,500 INR in 7 days
4.9
4.9

Hi Your project AI-Based Customer Support Platform Development aligns perfectly with my expertise in AI and automation. I can help design, build, and deploy intelligent systems using AI Agents, n8n, OpenAI, API integrations, workflow automation, and chatbot solutions. I prioritize clean implementation, reliability, and long-term scalability while ensuring clear communication throughout the project. My solutions are designed to save time and improve business efficiency. Let's discuss how I can help bring your project to life. Best Regards, Naseeb A.
₹12,500 INR in 5 days
3.4
3.4

Hi, I can easily DO your work IN 24 HOURS, DM me now to get started, PRICE NEGOTIABLE 100% Work satisfaction is provided
₹12,500 INR in 1 day
2.4
2.4

Hey! With over 5 years of experience crafting and executing AI-powered systems just like the one you need to develop, I am confident that I can bring great value to your project. My expertise in AI Chatbot development and OpenAI integration aligns perfectly with your requirements, ensuring you get a platform with natural, human-like conversations and multiple voice options for the conversations. Additionally, my proficiency in Node.js - the primary tech you need, will ensure diligent handling of features like appointment booking and lead qualification. A distinctive quality I bring to every project is not just technical expertise but also a strong understanding of business needs. Having collaborated with 80+ businesses worldwide for growth automation and scaling, I am well-rounded in my approach. Alongside being result-driven and deadline-oriented, I prioritize clear communication.
₹25,000 INR in 20 days
1.1
1.1

As a chat support i can work on it and i will make sure i do my job as a chat support u can deliver the project in 2 days i can work 8 hours and 8$
₹25,000 INR in 2 days
0.0
0.0

⭐ Hi there ! Let's set meeting schedule for ur project more detail . Your platform is not just chatbot work Core part is voice flow call state WhatsApp follow up CRM sync and billing all working cleanly Similar AI agent flow was built with OpenAI Twilio WhatsApp API Supabase and Next js where agent handled lead qualify booking transcript and admin review For this one best stack is Next js Node OpenAI Twilio or Exotel WhatsApp Business API Supabase PostgreSQL Razorpay and Stripe Voice cloning and multi language can be added but better to launch first MVP with stable calling booking transcript KB bot dashboard usage tracking and webhooks Then scale voices analytics and CRM deeper after real calls Source code and deployment setup will be handed over fully Timeline :15 days Total Budget : INR 37500 Do you want first version focused on India businesses with Exotel and Razorpay
₹37,500 INR in 15 days
0.0
0.0

I'VE GOT YOUR BACK I recently helped a B2B team transition from a third-party sales stack to an in-house solution, resulting in increased efficiency and cost savings. I see your need for an AI developer to create a platform like Bland AI/Vapi/Retell AI. Although I am new to the platform, I have the experience of exceeding client expectations. I am well-versed in AI development and integration, ensuring seamless voice agent, WhatsApp automation, and website chatbot functionalities. Let's schedule a free consultation to discuss your project further and provide valuable insights. Helping you bring your vision to life, Warm Regards, Ahead Solutions
₹15,000 INR in 7 days
0.0
0.0

I recently assisted a client with a similar setup, ensuring their application ran seamlessly on the new environment without disrupting existing workflows. I can help you achieve your goal of developing an AI-based customer support platform by leveraging my experience in creating AI solutions for businesses. By focusing on outcomes, reliability, and smooth execution, I will ensure a clean, professional, and user-friendly platform. This is exactly the kind of project where a structured, detail-focused approach makes all the difference, and that’s what I bring. Your requirements align perfectly with my expertise in AI development and integration with platforms like WhatsApp and websites. I will ensure the platform is scalable, optimized, and seamlessly integrated with the necessary tools like CRM systems. Let's discuss your project further to deliver a solution that exceeds your expectations. Regards, Sebastian
₹18,750 INR in 7 days
0.0
0.0

You want a Bland/Vapi/Retell-style platform: AI voice calling (inbound/outbound, human-like, booking + lead qualification, recording/transcripts), WhatsApp automation, and an embeddable website chatbot. I build exactly this. I run a production multilingual voice-banking platform (Urdu/English) handling 500K+ commands/month at 99.3% uptime, sub-800ms — custom ASR, intent + RAG, live human handoff. Also a Twilio + OpenAI bank call-center IVR (inbound/outbound, recording + transcription, 6 languages) and a real-time STT→LLM→TTS engine with barge-in. How I'd approach yours: one FastAPI core orchestrating Twilio/SIP voice + WhatsApp + web-chat channels, per-business agent config, booking/lead tools, recording + transcripts, and dashboards. I can show the voice engine live on a call. Portfolio: https://www.freelancer.com/u/ZohaibSathio. Which telephony stack do you prefer — Twilio, Plivo, or self-hosted SIP? — Zohaib, AI Engineer (Voice AI · Autonomous Agents · RAG)
₹22,500 INR in 21 days
0.0
0.0

Chennai, India
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