You will get a RAG AI chatbot with voice, leads and website widget
Project details
I build custom AI chatbots that answer customer questions using your business knowledge and help turn conversations into qualified leads.
The chatbot can use your website content, PDFs, FAQs, and documents with Retrieval-Augmented Generation (RAG). It retrieves relevant information from your knowledge base before generating a GPT response.
Included features:
• Embeddable website chat widget
• GPT-powered RAG chatbot
• Document, FAQ, and website-content indexing
• Text chat, voice input, and AI voice responses
• Lead capture: name, email, phone, and notes
• Conversation history and visitor dashboard
• Human-handoff requests for your support team
• Secure authentication and API-key configuration
• React, FastAPI, PostgreSQL, pgvector, and OpenAI integration
Optional integrations: WhatsApp, Facebook, Instagram, GoHighLevel, CRM/API workflows, and Vapi AI voice calls.
Ideal for customer support, lead generation, SaaS, agencies, e-commerce, and service businesses.
Live demo: fapibot.vercel.app
Already built and ready to customize. Special launch pricing available for early clients.
The chatbot can use your website content, PDFs, FAQs, and documents with Retrieval-Augmented Generation (RAG). It retrieves relevant information from your knowledge base before generating a GPT response.
Included features:
• Embeddable website chat widget
• GPT-powered RAG chatbot
• Document, FAQ, and website-content indexing
• Text chat, voice input, and AI voice responses
• Lead capture: name, email, phone, and notes
• Conversation history and visitor dashboard
• Human-handoff requests for your support team
• Secure authentication and API-key configuration
• React, FastAPI, PostgreSQL, pgvector, and OpenAI integration
Optional integrations: WhatsApp, Facebook, Instagram, GoHighLevel, CRM/API workflows, and Vapi AI voice calls.
Ideal for customer support, lead generation, SaaS, agencies, e-commerce, and service businesses.
Live demo: fapibot.vercel.app
Already built and ready to customize. Special launch pricing available for early clients.
AI Algorithms
Large Language Model, Transformer ModelAI Applications
AI Chatbot, AI Text-to-Speech, Automatic Speech Recognition, Conversational AI, Natural Language Generation, Natural Language UnderstandingAI Development Language
PythonAI Models
ChatGPT, GPT-4, WhisperWhat's included
| Service Tiers |
Starter
$99
|
Standard
$500
|
Advanced
$1,500
|
|---|---|---|---|
| Delivery Time | 1 day | 3 days | 7 days |
Number of Revisions | 1 | 2 | 3 |
AI Model Integration | |||
Batch Normalization | - | ||
Database Integration | - | - | - |
Detailed Code Comments | - | - | - |
Image Upscaling | - | - | - |
MLOps | - | - | - |
Model Deployment | - | - | - |
Model Documentation | - | ||
Model Monitoring | - | - | - |
Model Testing & Optimization | - | ||
Model Tuning | - | - | - |
Natural Language Processing | |||
NLP Tokenization | - | - | - |
Pre-Training | - | - | - |
Prompt Engineering | |||
Setup File | - | ||
Source Code | - |
Optional add-ons
You can add these on the next page.
Additional knowledge-base / document source
(+ 2 Days)
+$75
Voice-chat integration
(+ 3 Days)
+$150
Additional website widget installation
(+ 1 Day)
+$50Frequently asked questions
41 reviews
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JB
James B.
Mar 15, 2026
Full Stack Developer + Google Cloud Configuration
Shaikh was fast, spoke great English, easy to understand, knowledgeable, and was very responsive. cant wait to work with him again
JB
James B.
Jun 4, 2024
help set up MySQL table and organize databae
SH
Stephen H.
Aug 17, 2022
complete trucklotmanger.com, improve doc files using photoshop, customer development
JB
James B.
Jul 5, 2022
help set up MySQL table and organize databae
MV
Marika V.
Dec 22, 2020
Wordpress Avada Theme upgrade from 4.x to latest version
Job well done and on time.
About Shaikh Mahbubur
AI Developer | AI Agents, RAG, Voice AI, GoHighLevel & SaaS Automation
100%
Job Success
Khulna, Bangladesh - 6:28 am local time
With 12+ years of software development experience, I combine traditional software engineering with modern AI to build scalable applications that connect with CRMs, business data, documents, APIs, messaging platforms, and existing workflows.
### 🚀 What I Build
🤖 **AI Agents & Custom Chatbots** — Intelligent assistants with memory, business rules, lead qualification, API/tool access, and automated actions.
📚 **RAG & Knowledge Base AI** — Secure AI systems that search company documents and business knowledge using embeddings, vector search, and contextual retrieval.
🎙️ **Voice AI & AI Receptionists** — AI phone agents for answering calls, qualifying leads, handling questions, collecting information, and booking appointments.
⚙️ **GoHighLevel Automation** — Custom GHL API integrations, webhooks, workflows, contact routing, owner assignment, lead management, and CRM automation.
💬 **WhatsApp & Messenger AI** — AI assistants connected to messaging channels for customer support, lead engagement, and automated conversations.
🔗 **API & Business Automation** — Connect AI with CRMs, databases, calendars, internal systems, and third-party applications.
📊 **Custom AI SaaS Platforms** — Full-stack AI applications with authentication, dashboards, administration, user management, knowledge bases, and integrations.
### 🛠 Recent Projects
** AI Mentor Platform**
Built an advanced AI mentor system combining RAG, vector search, mentor-specific knowledge, conversation history, contextual memory, STT/TTS, and personalized AI conversations.
** AI Financial Fact Finder & Qualification**
Developed an AI-guided intake and fact-finding system that collects client information, remembers progress, applies qualification rules, routes opportunities, and helps move prospects from initial contact through advisor follow-up.
** AI Social Media SaaS Platform**
Developed a multi-platform SaaS application integrating Facebook, Instagram, Threads, X, LinkedIn, YouTube, and TikTok with OAuth, media management, publishing workflows, and AI-powered content capabilities.
**Agentic AI Customer Support Platform**
Built a ChatGPT-powered support system using RAG, PostgreSQL/pgvector, conversation memory, business knowledge, guided lead qualification, WhatsApp, Messenger, and custom API integrations.
**GoHighLevel CRM Automation**
Built custom GHL integrations using APIs and webhooks for contact management, owner synchronization, lead routing, appointments, workflows, and external application integrations.
**Marketing Attribution Platform**
Developed an attribution and CRM automation system designed to connect advertising sources with leads and downstream CRM activity.
### 💻 Technology
**AI:** OpenAI, ChatGPT, Claude, Gemini, RAG, Embeddings, Vector Search, AI Agents, Prompt Engineering
**Backend:** FastAPI, Python, Laravel, PHP, REST APIs, Webhooks, JWT
**Frontend:** React, TypeScript, JavaScript
**Database:** PostgreSQL, pgvector, MySQL
**Integrations:** GoHighLevel, Meta, WhatsApp, Messenger, Google APIs, OAuth & third-party APIs
### Why Work With Me?
✔ 12+ years of software development experience
✔ Production-ready AI—not just prototypes
✔ Strong AI Agent, RAG & API integration experience
✔ Full-stack development from concept to deployment
✔ Clean, scalable, maintainable architecture
✔ Business-focused automation and problem solving
✔ Long-term development and support
My goal isn't to build an AI demo. It's to build technology that reduces manual work, improves customer experience, captures more opportunities, and makes your business operate more efficiently.
If you're looking for help with AI Agents, RAG, Voice AI, GoHighLevel automation, API integrations, or a custom AI SaaS application, let's discuss your project.
Steps for completing your project
After purchasing the project, send requirements so Shaikh Mahbubur can start the project.
Delivery time starts when Shaikh Mahbubur receives requirements from you.
Shaikh Mahbubur works on your project following the steps below.
Revisions may occur after the delivery date.
Review your goals and knowledge sources
I review your website, documents, FAQs, target users, brand details, and the questions your chatbot should handle.
Build and train the RAG chatbot
I configure the GPT-powered chatbot, index your knowledge sources, create the prompt, and test answer quality.