ChatGPT Integration
GPT built into your product and operations
We integrate OpenAI's models into websites, stores and internal software: drafting, answering, extracting, personalizing. Properly engineered, with your data connected safely, outputs validated and API costs kept predictable.
- 513+ projects delivered
- ★ 4.9 from 678 verified reviews
- Clients in 20+ countries
Trusted by brands worldwide
Projects launched
Fiverr rating
Years experience
Countries served
The API is easy. The integration is the hard part.
Calling ChatGPT takes ten lines of code. Making it production-grade takes real decisions: what context the model sees, how outputs are validated before users see them, what happens when the API is slow or wrong, and how costs behave when usage spikes.
We handle the whole integration: prompt architecture, retrieval over your data, caching, fallbacks and monitoring. The result feels like a native feature of your product, not a chatbot bolted on the side.
Why brands choose Devjour
Not just another development agency: a growth partner focused on what your website earns, not just how it looks.
678 verified 5-star reviews
A 4.9 rating across 678 Fiverr reviews and 500+ delivered projects. Our track record is public and verifiable.
Conversion first, always
We measure success in revenue, not deliverables. Every layout, feature and line of copy exists to move buyers to checkout.
Fixed quotes, zero surprises
You get a fixed price and timeline before we start. No hourly meters, no scope-creep invoices.
Senior team, direct access
You talk to the people doing the work, including experience building for top US brands at Sharma Brands.
What you get
Product features
GPT-powered drafting, search, recommendations and personalization inside your app or store.
Content operations
Descriptions, summaries and translations generated in your brand voice, with review flows.
Data grounding
Your docs, catalog and policies connected so answers are specific to your business.
Structured outputs
Validated JSON responses that plug into your systems, not free text that breaks them.
Cost engineering
Model selection, caching and token budgets that keep the bill boring.
Reliability
Timeouts, fallbacks and monitoring so AI features degrade gracefully, never take you down.
AI tools & platforms we work with
OpenAI
Claude
n8n
Cursor
Our process
You always know what happens next. From the first call to 30 days of free post-launch support.
Case studies
All case studiesCustom & Gifts
Jetpack Stickers
Full website build for a custom sticker company, including a live sticker configurator where customers design, price and order in one flow.
Challenge, solution and results →Home & Lifestyle
Drool Art
Full website build for an art-print brand, with dynamic product framing so shoppers preview any artwork in any frame and size, live.
Challenge, solution and results →Sports & Fitness
Timeless Jump
Full website build for a jump-rope brand, with individually designed product pages for every rope, mat and accessory in the range.
Challenge, solution and results →What clients say
Real reviews from verified Fiverr clients
“Had a great experience with Devjour Tech. He built me a full website with lots of customized sections that required a professional web designer. It's tough these days to find people who can actually do what they say they can do. I am so happy I have found a developer that I know can confidently do the work that is needed. 5 stars!!”
“Great service and went above the required job! I wanted help with some specific coding and font adjustments, the coding has now allowed me to fully control the font sizing with an adjustment tool which is super helpful! Small issues with the website were also fixed. Would highly recommend if you are looking for a coding expert for your Shopify store!”
“We are very happy with the work delivered. He helped us solve several bugs and issues we had on our website and was extremely helpful throughout the entire process. Communication was always professional and efficient, and he paid great attention to detail while following all the guidelines we provided.”
“This is the second project we have worked on and I have been completely satisfied each time, the work was executed professionally and he did what he said he would do. Highly recommend.”
The Devjour difference
An investment that pays for itself
A faster, conversion-focused website is not a cost, it is infrastructure for growth. The work we do is aimed squarely at the numbers that move your business:
- More completed checkouts
- Higher average order values
- A better mobile experience
- Lower bounce rates
- Increased repeat purchases
Technologies we use
- OpenAI GPT
Next.js
Node.js
PostgreSQL- Vector DBs
Redis
The team behind your project
Meet the companyMore AI services
ChatGPT Integration questions
Can you integrate GPT into our existing site or store?
Yes, that is the typical project: adding AI features into an existing Next.js app, Shopify store, WordPress site or custom software without disrupting what already works.
GPT or Claude?
We implement both and often route by task. If you arrived wanting ChatGPT specifically, we will build it, and benchmark alternatives on your workload so you choose with data.
How do you control API costs?
Right-sized models per task, aggressive caching, response limits and usage dashboards. You will know the cost per action before launch.
Is our data safe?
API usage with training disabled, minimal context windows, redaction of sensitive fields and audit logs. NDAs signed before discovery.
Not ready to start yet?
Free Integration Consultation, on us
Tell us about your website and we will send back honest, specific recommendations. No strings attached.
Ready to grow with chatgpt integration?
Free 1-hour strategy call. Clear plan, fixed quote, zero obligation.