You will get Build a Custom AI Chatbot with GPT, LangChain & RAG
Project details
Looking for a custom AI chatbot that actually understands your business? I build intelligent, production-ready chatbots and conversational AI assistants powered by the latest LLMs GPT-5, Claude, and open-source models like LLaMA.
Whether you need a customer-support bot that answers from your own documents, a lead-generation assistant for your website, or a multi-agent system that handles complex workflows, I deliver a solution that's accurate, scalable, and tailored to you.
What I build:
• Custom GPT & Claude-powered chatbots
• RAG chatbots trained on your docs, PDFs & knowledge base
• Multi-agent systems with LangChain & LangGraph
• Website, WhatsApp, Slack & Telegram integration
• Vector database setup (Pinecone, Qdrant, ChromaDB)
• Secure API integration & deployment
Why work with me:
✅ Top Rated Plus top 1% of talent on Upwork
✅ $100K+ earned across 89+ projects
✅ 9,900+ hours of proven delivery
✅ End-to-end: from concept to deployment & support
I focus on chatbots that reduce support load, capture leads, and respond accurately not generic templates. Message me with your idea and I'll recommend the best approach.
Whether you need a customer-support bot that answers from your own documents, a lead-generation assistant for your website, or a multi-agent system that handles complex workflows, I deliver a solution that's accurate, scalable, and tailored to you.
What I build:
• Custom GPT & Claude-powered chatbots
• RAG chatbots trained on your docs, PDFs & knowledge base
• Multi-agent systems with LangChain & LangGraph
• Website, WhatsApp, Slack & Telegram integration
• Vector database setup (Pinecone, Qdrant, ChromaDB)
• Secure API integration & deployment
Why work with me:
✅ Top Rated Plus top 1% of talent on Upwork
✅ $100K+ earned across 89+ projects
✅ 9,900+ hours of proven delivery
✅ End-to-end: from concept to deployment & support
I focus on chatbots that reduce support load, capture leads, and respond accurately not generic templates. Message me with your idea and I'll recommend the best approach.
AI Algorithms
AdaBoost, AlexNet, Autoencoder, Convolutional Neural Network, CycleGAN, Deep Belief Network, Feedforward Neural Network, Generative Adversarial Network, Large Language Model, Linear Discriminant AnalysisAI Applications
AI Chatbot, AI Content Creation, AI Mobile App Development, AI Text-to-Image, AI Text-to-Speech, AI-Enhanced Classification, AI-Enhanced Medical Imaging, AI-Generated Code, AI-Generated Music, AI-Generated Video, AIOps, Image AnalysisAI Development Language
PythonAI Tools
Adobe Firefly, Azure OpenAI, Bing AI, Copy.ai, GitHub Copilot, Gradio, Jasper AI, Microsoft 365 Copilot, NVIDIA AI Platform, ReplitAI Models
AlphaCode, BERT, BLOOM, ChatGPT, DALL-E, Dolly, GPT-3, GPT-4, GPT-J, Jurassic-2, LaMDA, Midjourney AIWhat's included $200
These options are included with the project scope.
$200
- Delivery Time 15 days
- 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
About Vikas
AI Developer | Gen AI | LLM | LangGraph | AI Voice Agent | RAG | AI
Ghaziabad, India - 12:47 am local time
𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝗔𝗜 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 & 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 | 𝟴+ 𝗬𝗲𝗮𝗿𝘀 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 | 𝟭𝟬𝟬% 𝗝𝗼𝗯 𝗦𝘂𝗰𝗰𝗲𝘀𝘀 𝗥𝗮𝘁𝗲
→ Top 1% Freelancer on Upwork with $700+ in total earnings
→ 100% Job Success Rate verified across 80+ completed projects
→ Top 4% overall contributor on Stack Overflow
→ AWS & Python Certified | Enterprise AI Architect | Available 50+ hours/week
Greetings! I am Vikas Kumar, a Senior AI Engineer and Full-Stack Architect with over 8+ years of experience engineering production-grade AI solutions, agentic workflows, and full-stack software.
I bridge the gap between cutting-edge Artificial Intelligence and commercial-grade software. Whether you need autonomous multi-agent orchestration, ultra-low latency Voice AI bots, advanced GraphRAG pipelines, or custom fine-tuned LLMs, I deliver scalable, secure, and maintainable enterprise AI applications.
𝗖𝗼𝗿𝗲 𝗔𝗜 & 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀
→ Autonomous Multi-Agent Systems: Designing stateful, deterministic agentic workflows using LangGraph, CrewAI, and AutoGen for complex enterprise decision logic, tool calling, and human-in-the-loop approvals.
→ Production Voice AI Agents: Building real-time, low-latency conversational voice bots using LiveKit, Vapi, Retell AI, ElevenLabs, and Deepgram.
→ Advanced RAG & GraphRAG Pipelines: Engineering hybrid semantic search, corporate knowledge graphs, and multi-stage reranking engines (LlamaIndex, LangChain) to achieve zero-hallucination document intelligence.
→ Custom MCP Servers & Tool Calling: Building Model Context Protocol (MCP) integrations to safely connect LLMs to internal databases, APIs, and business systems.
→ LLM Fine-Tuning & Inference Optimization: Fine-tuning open-weight models (DeepSeek-R1, Llama 3.3, Mistral) using Unsloth, Axolotl, PEFT/LoRA, and vLLM to cut external API costs by up to 70%.
→ Full-Stack GenAI Web & Mobile Apps: Developing modern Next.js/React frontends with scalable Python (FastAPI, Django) and Node.js backends.
𝗗𝗲𝗲𝗽 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲
• GenAI & Agent Frameworks: LangGraph | LangChain | CrewAI | AutoGen | LlamaIndex | Model Context Protocol (MCP) | Prompt Engineering | Tool Calling
• Cloud AI & Foundations: OpenAI API | Anthropic Claude | AWS Bedrock | AWS SageMaker | Hugging Face | Google Gemini API
• Open-Weight LLMs & Serving: DeepSeek-R1 | Llama 3.x / Llama 4 | Mistral | vLLM | TensorRT-LLM | Quantization (GGUF, AWQ, EXL2)
• Voice AI & Streaming: Vapi | LiveKit | ElevenLabs | Retell AI | Deepgram | Whisper API
• Vector Stores & Databases: Qdrant | Pinecone | Weaviate | Milvus | PostgreSQL (pgvector) | Redis Caching
• Backend & Data Pipelines: Python (FastAPI, Django, Flask) | Node.js (Nest.js, Express) | Celery | Web Scraping (Playwright, BeautifulSoup)
• Frontend & Mobile: Next.js | React.js | TypeScript | Tailwind CSS | React Native (iOS / Android)
• LLMOps, DevOps & Observability: Langfuse | Arize Phoenix | Docker | Kubernetes | AWS (EC2, S3, Lambda) | CI/CD Pipelines
𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 Choose 𝗧𝗼 𝗪𝗼𝗿𝗸 𝗪𝗶𝘁𝗵 𝗠𝗲
1. Production-Ready Code: I build maintainable, commercially viable software, not fragile proofs-of-concept.
2. End-to-End Ownership: From model architecture and vector storage to frontend UI and cloud deployment.
3. Speed & Communication: Fast turnaround times, transparent updates, and clean documentation.
Let’s solve your engineering bottlenecks and build something incredible.
📩 Send me a message or invite me to apply for your project today!
Best regards
Vikas
Steps for completing your project
After purchasing the project, send requirements so Vikas can start the project.
Delivery time starts when Vikas receives requirements from you.
Vikas works on your project following the steps below.
Revisions may occur after the delivery date.
Discovery & Scope
I will align on your chatbot's goals, data sources, target model, and where it will be deployed.
Data Prep & Setup
I prepare your knowledge base, set up the vector database, and build the RAG pipeline.