You will get a custom LLM application using Python, FastAPI & OpenAI

Name: You will get a custom LLM application using Python, FastAPI & OpenAI
Availability: InStock

Divash U. Divash U.

3.0

Divash U. Divash U.

3.0

Project details

You will get a production-ready LLM application built with Python, FastAPI, OpenAI, and modern AI architecture. As a Generative AI Developer and AI Developer, I build scalable LLM applications, AI chatbots, AI Agents, RAG systems, and enterprise AI solutions for startups and businesses.

Whether you need an OpenAI application, GPT-4 integration, Claude AI, Gemini AI, AI automation, Conversational AI, or a custom AI-powered SaaS product, I'll deliver secure, scalable, and maintainable software using Python, FastAPI, LangChain, LangGraph, REST APIs, and modern cloud technologies.

Every solution includes clean architecture, Prompt Engineering, API integration, testing, documentation, and production-ready code, not just a prototype.

Specializations: Generative AI Developer, AI Developer, LLM Developer, OpenAI Developer, Python Developer, FastAPI Developer, AI Agent Developer, RAG Developer, GPT-4, Claude AI, Gemini AI, LangChain, LangGraph, Prompt Engineering, AI Chatbot, Conversational AI, AI Automation, Enterprise AI, API Integration.

AI Algorithms

Large Language Model, Multimodal Large Language Model, Recurrent Neural Network, Regression Analysis, Transformer Model

AI Applications

AI Chatbot, AI Content Creation, AI Mobile App Development, AI Text-to-Image, AI Text-to-Speech, AI-Enhanced Classification, AI-Generated Code, AIOps, Conversational AI, Natural Language Generation, Natural Language Understanding, Sentiment Analysis

AI Development Language

Python

AI Tools

Azure OpenAI, Bing AI, Jasper AI, PyTorch, Streamlit, TensorFlow

AI Models

ChatGPT, GPT-3, GPT-4, LaMDA, LLaMA, OpenAI Codex

What's included

Service Tiers	Starter $299	Standard $799	Advanced $1,999
Delivery Time	5 days	10 days	20 days
Number of Revisions	2	5	7
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

Frequently asked questions

3.0

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Full stack team Started well, but after payment, responsiveness and professionalism declined.

About Divash

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AI Developer | GenAI Engineer | Python | FastAPI | LLM | RAG

3.0 (1 review)

Bengaluru, India - 1:38 am local time

If you're looking for an AI Developer who can build production-ready Generative AI applications instead of simple demos, you're in the right place.

I'm a Generative AI Developer and AI Developer with 7+ years of experience building AI-powered SaaS products, enterprise applications, intelligent automation platforms, and scalable backend systems. As an AI Developer, I help startups, SaaS companies, and enterprises transform ideas into production-ready AI products using Python, FastAPI, LLMs, RAG pipelines, AI Agents, and modern cloud infrastructure.

As a Generative AI Developer, I specialize in designing scalable AI systems that solve real business problems. Every AI Developer project I build focuses on reliability, performance, maintainability, and long-term scalability rather than quick prototypes. My experience as a Generative AI Developer allows me to build complete AI solutions from architecture and backend development to deployment and optimization.

What I Build

• Generative AI Applications
• AI SaaS Platforms
• AI Agents & Multi-Agent Systems
• Enterprise AI Solutions
• AI Automation Platforms
• AI Chatbots
• AI Assistants
• AI Copilots
• Knowledge Base Chatbots
• Document Intelligence Systems
• Custom AI Products

As an AI Developer and Generative AI Developer, I build production-grade AI software powered by LLM, RAG, and AI Agent architectures that help businesses automate workflows, improve customer experiences, and unlock organizational knowledge.

Generative AI Expertise

As a Generative AI Developer, I build intelligent applications using OpenAI, Claude, Gemini, and open-source LLMs. I design advanced LLM applications with Prompt Engineering, function calling, structured outputs, memory, tool calling, and AI Automation workflows.

I develop scalable LLM solutions including AI Assistants, enterprise search, AI Copilots, AI Agents, and intelligent workflow automation. Every Generative AI Developer solution is optimized for speed, reliability, and production use.

RAG & AI Agent Development

I specialize in RAG (Retrieval-Augmented Generation) systems that connect LLM models with business knowledge using modern Vector Database technologies.

My RAG expertise includes:

• Enterprise RAG
• Hybrid Search
• Semantic Search
• Vector Search
• Knowledge Bases
• PDF Chat
• Document Intelligence
• Context Engineering
• Citation Systems
• Multi-document Retrieval

As an AI Developer, I build advanced RAG pipelines using LangChain, LangGraph, embedding models, reranking strategies, and scalable Vector Database architectures.

I also develop intelligent AI Agent systems capable of planning, reasoning, executing tools, and automating complex business workflows. My AI Agent solutions leverage LangGraph, LangChain, and modern orchestration frameworks to deliver reliable, production-ready automation.

Backend & AI Engineering

My primary backend stack includes Python, FastAPI, Node.js, PostgreSQL, Redis, Docker, and cloud-native architecture.

I build scalable APIs, async services, authentication systems, background workers, microservices, and AI backends using Python and FastAPI. Every FastAPI application is designed for high performance, security, and maintainability.

Backend Expertise:

• Python
• FastAPI
• Node.js
• REST APIs
• GraphQL
• PostgreSQL
• MongoDB
• Redis
• Docker
• AWS
• CI/CD

Full Stack AI Development

As a Generative AI Developer, I also build complete user-facing products using React.js, Next.js, TypeScript, Tailwind CSS, and modern frontend architecture.

I combine React.js, Next.js, Node.js, Python, and FastAPI to deliver complete AI-powered SaaS platforms from frontend to backend.

AI Technologies

• OpenAI
• Claude
• Gemini
• LangChain
• LangGraph
• Python
• FastAPI
• LLM
• RAG
• AI Agent
• Vector Database
• Prompt Engineering
• AI Automation
• React.js
• Next.js
• Node.js

Whether you need an AI Developer to build an enterprise AI platform, a Generative AI Developer for an AI SaaS product, an LLM application, a production-ready RAG system, intelligent AI Agent workflows, or scalable FastAPI and Python backend services, I can help you design, build, and deploy secure, high-performance AI solutions that are ready for real users, not just demos.

Let's build your next AI product.

[ Full Stack Developer | Full Stack AI Developer | Generative AI Developer | AI Engineer | AI Application Developer | LLM Developer | LLM Engineer | RAG Developer | AI Agent Developer | AI Automation Developer | AI Chatbot Developer | AI SaaS Developer | Generative AI SaaS Developer | OpenAI Developer | Claude AI Developer | LangChain Developer | AI API Developer | AI Integration Developer | MERN Stack Developer | React.js Developer | Next.js Developer | Node.js Developer | Express.js Developer | TypeScript Developer | JavaScript Developer | Python Developer | FastAPI Developer | Full Stack Web Developer | SaaS Developer ]

Steps for completing your project

After purchasing the project, send requirements so Divash can start the project.

Delivery time starts when Divash receives requirements from you.

Divash works on your project following the steps below.

Revisions may occur after the delivery date.

Requirement Analysis

Review your business needs, define the project scope, select the best LLM architecture, and finalize the implementation plan.

LLM Development

Develop the application using Python, FastAPI, OpenAI APIs, prompt engineering, and modern backend architecture.

Review the work, release payment, and leave feedback to Divash.

Select service tier

Starter$299

Standard$799

Advanced$1,999

LLM MVP

Basic LLM app with OpenAI integration, FastAPI API, and clean source code.

Delivery Time 5 days
Number of Revisions 2
- AI Model Integration
- Detailed Code Comments
- Natural Language Processing
- Prompt Engineering
- Setup File
- Source Code

5 days delivery — Jul 13, 2026

Revisions may occur after this date.

Upwork Payment Protection

Fund the project upfront. Divash gets paid once you are satisfied with the work.

You will get a custom LLM application using Python, FastAPI & OpenAI

Let a pro handle the details

Let a pro handle the details

Project details

AI Algorithms

AI Applications

AI Development Language

AI Tools

AI Models

What's included

Frequently asked questions

JC

About Divash

AI Developer | GenAI Engineer | Python | FastAPI | LLM | RAG

Steps for completing your project

After purchasing the project, send requirements so Divash can start the project.

Divash works on your project following the steps below.

Requirement Analysis

LLM Development

Review the work, release payment, and leave feedback to Divash.

Select service tier

LLM MVP