You will get AI Features Added to Your Web App — Any LLM, Cost-Optimised
Project details
I add AI features to existing web apps — and help you pick the right model to do it. Most developers default to GPT-4o for everything. I test your use case across providers (OpenAI, Claude, Gemini, local) and recommend the best fit for quality, cost, and privacy.
Why work with me:
• Shipped AI production apps. Dyadem uses LLMs to generate adaptive survey follow-ups and synthesise community insights in real-time. I switched from Gemini to Claude after testing showed better contextual output at lower cost.
• Psychology (Oxford), intelligent systems (UCL), computational modelling (Imperial). I focus on how users interact with AI features, not just making the API call work.
• Model-agnostic. OpenAI, Anthropic, Google, Mistral, or local LLMs for privacy-sensitive data. Same integration pattern — switch providers anytime with zero lock-in.
• Your existing codebase. React, Next.js, or any modern JS framework. No rewrite needed.
Starter ($500): audit + model recommendation + roadmap. Standard ($2,000): one AI feature, deployed. Advanced ($5,000): full AI layer with docs.
Why work with me:
• Shipped AI production apps. Dyadem uses LLMs to generate adaptive survey follow-ups and synthesise community insights in real-time. I switched from Gemini to Claude after testing showed better contextual output at lower cost.
• Psychology (Oxford), intelligent systems (UCL), computational modelling (Imperial). I focus on how users interact with AI features, not just making the API call work.
• Model-agnostic. OpenAI, Anthropic, Google, Mistral, or local LLMs for privacy-sensitive data. Same integration pattern — switch providers anytime with zero lock-in.
• Your existing codebase. React, Next.js, or any modern JS framework. No rewrite needed.
Starter ($500): audit + model recommendation + roadmap. Standard ($2,000): one AI feature, deployed. Advanced ($5,000): full AI layer with docs.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$500
|
Standard
$2,000
|
Advanced
$5,000
|
|---|---|---|---|
| Delivery Time | 5 days | 14 days | 30 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 1 | 3 | 10 |
Design Customization | - | ||
Content Upload | - | ||
Responsive Design | - | ||
Source Code |
Optional add-ons
You can add these on the next page.
Local LLM setup
(+ 5 Days)
+$1,000Frequently asked questions
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LV
Luke V.
Mar 9, 2026
Next.js marketing website build
Adam built a clean and professional Next.js marketing website quickly and to spec. Good communication throughout, responsive to feedback, and delivered on time. Would happily work with him again and fantastic end result.
About Adam
AI Integration Developer | Next.js, Gemini & OpenAI
Surbiton, United Kingdom - 11:59 pm local time
My background is unusual for a developer: psychology (Oxford), intelligent systems (UCL), and computational modelling (Imperial). That means I build AI features focused on how people actually use them, not just technical implementation.
What I build:
AI-powered web applications (Gemini API, OpenAI API, Next.js, TypeScript)
Privacy-first data systems — one handled 500+ sensitive submissions with zero incidents
Payment integrations (Stripe, GoCardless) — one increased donations by 25%
High-performance sites — rich media landing page
Recent shipped work:
Dyadem — AI adaptive feedback platform using Gemini API (submitted to Google hackathon)
TrusteeKit — charity management with automated Gift Aid, HMRC-recognised
Evidence Platform — anonymous data collection for judicial review
Buzzfoiler — marketing site for electric watercraft startup
Tech stack: Next.js, TypeScript, React, Supabase, PostgreSQL, Tailwind CSS, Vercel. Automated security scanning (npm audit, OWASP ZAP) on every commit.
Based in London. Available for AI integration projects, focused builds, and sprint builds.
Steps for completing your project
After purchasing the project, send requirements so Adam can start the project.
Delivery time starts when Adam receives requirements from you.
Adam works on your project following the steps below.
Revisions may occur after the delivery date.
Codebase audit & AI opportunity mapping
Review your app, identify where AI adds value, flag any blockers.
Build & integrate in dev environment
Implement the AI feature with the selected model. Clean code, error handling, tests.