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I will build ai powered next js web app with openai integration
Rajan Vasani
About this gig
Want to build an AI-powered web app in 2026? I build cutting-edge Next.js apps integrated with OpenAI, ChatGPT, and modern AI APIs.
With 7+ years of full stack experience, I specialize in Next.js 14/15 apps that combine AI intelligence with fast, scalable frontends.
What I build:
- AI web apps with OpenAI GPT-4 integration
- ChatGPT chatbots embedded in your platform
- AI content generators and smart dashboards
- Next.js SaaS platforms with AI features
- RAG systems with vector databases (Pinecone)
- AI image generation apps with DALL-E
- API-based AI tool development
Tech stack:
- Frontend: Next.js 14/15, React 18, TypeScript, Tailwind CSS
- AI: OpenAI API, GPT-4, DALL-E, Whisper, Embeddings
- Backend: Node.js, REST APIs, tRPC, Prisma ORM
- Database: PostgreSQL, MongoDB, Pinecone, Supabase
- Auth: NextAuth.js, Clerk, JWT
- Deploy: Vercel, AWS, Docker
Why choose me:
- Fast delivery with clean, documented code
- AI features that work in production
- Full TypeScript for reliability
- Ongoing support after delivery
Order now and let's build your AI app.
Get to know Rajan Vasani
Rajan Vasani
Senior Full Stack Developer React NodeJS and AI Integration
- FromIndia
- Member sinceMay 2021
- Last delivery2 years
Languages
Gujarati, English, Hindi
I’m a certified senior Full-Stack developer with 7+ years of experience. I specialize in creating high-performance back-end APIs and integrating them seamlessly with responsive front-end systems. My expertise includes building ReactJs applications (Redux, Redux-thunk, Redux-saga) and developing NodeJs apps using Express and EJS. I’m also skilled in creating REST APIs with databases like MySQL, PostgreSQL, and MongoDB. I’m dedicated to delivering top-tier solutions that meet your unique needs.
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FAQ
Can you integrate OpenAI or ChatGPT into my Next.js app?
Yes! I specialize in integrating OpenAI GPT-4, ChatGPT, DALL-E, and Whisper into Next.js apps. Whether you need a chatbot, AI content generator, or smart search, I build it with secure API handling and a great user experience.
What AI features can you build into my web app?
I can build AI chatbots, content generators, semantic search, AI image tools with DALL-E, RAG pipelines with vector databases, AI dashboards, and GPT-4 powered recommendation engines — all within your Next.js app.
Do you have experience with RAG and vector databases?
Yes! I build RAG systems that connect your documents or data to GPT-4. I use Pinecone, Supabase pgvector, and Weaviate for vector storage so your AI app can answer questions from your own knowledge base.
Can you build a complete AI SaaS product from scratch?
Absolutely! I build full AI SaaS products with Next.js, OpenAI, Stripe payments, user auth (Clerk/NextAuth), and database. You get a production-ready AI product with subscription billing and a clean dashboard.
How long does a typical project take?
Simple AI integrations (chatbot, GPT-4 API) take 3-5 days. Full AI web apps take 1-2 weeks. Complete AI SaaS products take 2-4 weeks. I always give a clear timeline before starting.
