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I will integrate openai, claude or gemini API into your web app
Kanta B
About this gig
Here's your gig description paste this directly:
Is your web application missing the power of AI? I can integrate OpenAI (ChatGPT), Anthropic Claude, or Google Gemini API into your existing React, Next.js, or Node.js project cleanly, securely, and fast.
I am a full-stack developer with 3+ years of experience building and integrating AI-powered features into real-world web applications.
What I can integrate:
- ChatGPT / GPT-4o (OpenAI API)
- Claude API (Anthropic)
- Gemini API (Google)
- Streaming responses (real-time typing effect)
- Custom AI personas & system prompts
- Conversation history & multi-turn chat
- RAG chat with your own documents or data
- Image generation (DALL-E / Imagen)
- Speech-to-text (Whisper API)
- Function calling & tool use
What you will get:
- Clean, well-commented code
- API key secured via backend proxy (no exposure)
- Fully tested and working integration
- Clear explanation of how everything works
- Documentation on request
Tech stack I work with: React · Next.js · Node.js · Express · ASP.NET Core · REST APIs
Whether you want a simple AI chat feature, a smart assistant trained on your data, or a fully custom AI-powered tool I have got you covered.
Not sure which package fits your pr
Get to know Kanta B
Kanta B
Software Engineer
- FromBangladesh
- Member sinceMay 2026
- Avg. response time1 hour
Languages
Bengali, English, German
I am a full stack software engineer with hands-on experience building web applications from scratch to production deployment. Whether you need a simple application or a complex enterprise grade system, I bring the technical depth and problem solving mindset to high performance solutions for your business needs.
I am fully committed. I believe in transparent communication, timely delivery, and writing solid code. I do not just write code I build solutions that scale, perform, and stand the test of time. Your goals become my goals, let us connect and build something great together.
My Portfolio
FAQ
Which AI providers do you support?
I support OpenAI (GPT-4o, GPT-3.5), Anthropic Claude (claude-sonnet, claude-haiku), and Google Gemini (1.5 Pro, 1.5 Flash). If you are unsure which one suits your project best, message me and I will recommend the right one based on your needs and budget.
What do I need to share to get started?
I need access to your GitHub or GitLab repository (or a zip of your project), your preferred AI provider, and a description of what you want the AI to do. You do not need to share your API key upfront — we set that up securely during the integration.
Will my API key be safe and secure?
Absolutely. I always integrate the AI through a secure backend proxy so your API key is never exposed in the frontend code. I follow best practices including environment variables and server-side request handling.
My app is built with a different stack — can you still help?
I primarily work with React, Next.js, Node.js, Express, and ASP.NET Core. If your stack is different, message me first with the details and I will let you know if I can help before you place an order.
What is RAG and do I need it?
RAG (Retrieval-Augmented Generation) lets the AI answer questions based on your own documents, website content, or database — instead of just general knowledge. You need it if you want your AI to know about your specific product, policy, or data. It is included in the Premium package.
Do you provide the AI API key?
No — API keys are provided by you directly from OpenAI, Anthropic, or Google. They are free to create and you only pay based on usage. I can guide you through setting up your API account if needed.
What if the integration does not work after delivery?
If the same issue reappears within 7 days of delivery, I will fix it for free. If I am unable to complete the integration for any reason, I offer a full refund — no questions asked.
