Browse categories
Explore
Fiverr Pro
English
$
USD
I will build a custom ai chatbot using openai, claude or langchain
Khizar
Level 2
5.0
5.0
About this gig
I build custom AI chatbots and agents for your business not no-code templates. Every bot is coded from scratch, production-ready, and fully yours.
What you get:
Custom chatbot (OpenAI GPT / Claude API)
LangChain/LangGraph intelligent agents
Custom personality & system prompts
Chat memory & conversation history
RAG answers from your own docs/data
Integration into your website/app
FastAPI or Node.js backend + React/Next.js frontend
Tech stack: OpenAI, Claude API, LangChain, LangGraph,Python,FastAPI, Node.js, React, Next.js, PostgreSQL, MongoDB
Real projects delivered:
MediClear bilingual medical report AI interpreter
16-agent fintech platform (LangGraph + Azure OpenAI)
Why me: No templates, no shortcuts. 4+ years freelance experience, clean code, clear communication, on-time delivery.
Message me your use case I'll tell you exactly what's possible.
Get to know Khizar
Khizar
MERN and AI Developer
Level 2
- FromPakistan
- Member sinceMar 2025
- Avg. response time1 hour
- Last delivery1 week
Languages
Urdu, Hindi, English
Hi, I'm Khizar, a Full-Stack MERN Developer & AI Specialist with 4+ years of experience in React.js, Next.js, Node.js, MongoDB, and AI-powered applications.
I specialize in building high-performance web apps and integrating AI solutions using LangChain, OpenAI API, LlamaIndex, and Vector Databases.
My Expertise:
✅ Full-Stack Web Development (React.js, Next.js, Node.js, Express.js, MongoDB)
✅ AI-Powered Apps & Chatbots (LangChain, FastAPI, OpenAI, RAG)
✅ API Integrations & Automation (REST, GraphQL, OpenAI API, Stripe)
✅ Performance Optimization & Debugging
My Portfolio
FAQ
Which AI model will you use?
Depends on your needs. I work with OpenAI GPT-4, Claude, and open-source models — I'll recommend the best fit for your use case.
Can the chatbot be trained on my own data?
Yes. I can build a RAG-based chatbot that answers from your documents, website, or knowledge base.
Will it work on my existing website?
Yes. I'll integrate it into any React, Next.js, or custom website you have.
Do you use no-code tools like Voiceflow?
Do you use no-code tools like Voiceflow?
Can I upgrade my package later?
Absolutely. Start with Basic and upgrade anytime as your needs grow.
Reviews
1 reviews for this Gig
| (1) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
N 
namazkhan
South Korea
He created for me Tracks API for my WordPress website. Exceptional work. I am very satisfied and recommend his services to everyone. (It was not AI related work, so nobody is confused)
$100-$200
Price
8 days
Duration
K 
Seller's Response
Helpful?
Reviews
1 reviews for this Gig
| (1) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
N namazkhan
South Korea
He created for me Tracks API for my WordPress website. Exceptional work. I am very satisfied and recommend his services to everyone. (It was not AI related work, so nobody is confused)
$100-$200
Price
8 days
Duration
K Seller's Response
Helpful?
