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English
$
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I will build ai chatbot using openai, gemini, langchain and rag
Bappy Debnath
About this gig
Looking for an intelligent AI chatbot to automate customer support, answer questions, or power your business with AI? You're in the right place!
I build custom AI chatbots using OpenAI, Google Gemini, LangChain, FastAPI, and RAG (Retrieval-Augmented Generation). Whether you need a website chatbot, AI assistant, FAQ bot, PDF chatbot, or knowledge base solution, I'll develop a scalable, production-ready application tailored to your business.
Services include:
AI Chatbot Development
RAG & Knowledge Base Chatbots
Website AI Assistants
PDF & Document Chatbots
Customer Support Automation
FastAPI Backend Development
Database & API Integration
Conversation Memory
Multi-language Support
Clean Source Code
I focus on building reliable AI solutions that improve customer experience, automate repetitive tasks, and integrate seamlessly with your existing systems.
Whether you're a startup, SaaS company, or established business, I'll deliver a secure, scalable, and well-documented solution.
Please contact me before placing an order so we can discuss your requirements and choose the best package for your project.
Get to know Bappy Debnath
Bappy Debnath
AI Backend Developer FastAPI LLM RAG AI Chatbots Automation
- FromBangladesh
- Member sinceMay 2026
- Avg. response time1 hour
Languages
Bengali, English
I am an AI Backend Developer and Full-Stack Engineer specializing in AI chatbots, FastAPI, RAG, AI automation, and backend development. I build scalable AI solutions using OpenAI, Google Gemini, LangChain, Python, Supabase, PostgreSQL, and REST APIs. My experience includes AI assistants, customer support chatbots, analytics dashboards, and intelligent automation workflows. I focus on delivering clean, reliable, and production-ready solutions that help businesses automate processes, improve customer experience, and scale efficiently
My Portfolio
FAQ
What AI models do you support?
I can build chatbots using OpenAI (GPT models), Google Gemini, Groq (Llama), and other LLMs depending on your project requirements.
Can the chatbot answer questions from my documents?
Yes. I can build Retrieval-Augmented Generation (RAG) chatbots that understand and answer questions from PDFs, Word documents, websites, manuals, FAQs, databases, and other business knowledge sources.
Can you integrate the chatbot with my website?
Yes. I can integrate the chatbot with websites, web applications, internal business systems, or custom FastAPI backends. Integration with APIs, databases, and external services is also available.
Which platforms do you support?
Websites WhatsApp Telegram Discord Slack Custom Web Applications
Can you connect the chatbot to my database or CRM?
Yes. I can integrate your chatbot with SQL databases, Supabase, PostgreSQL, vector databases, CRMs, REST APIs, and other third-party services.
Can you deploy the chatbot?
Yes. I can deploy your chatbot on cloud platforms such as Render, Railway, VPS servers, or other hosting providers depending on your project requirements.
I have a custom AI project. Can you help?
Absolutely! Every business has unique requirements. Send me a message with your idea, and I'll recommend the best architecture and solution before you place an order.
