You will get a LLM API Integration
Top Rated

Project details
Want to connect OpenAI, Claude, or Gemini to your app or workflow but don't know where to start? I'll handle the full LLM API integration for you — from setup to deployment.
Whether you need GPT-4, Claude Sonnet, or Gemini Pro integrated into your web app, automation, or custom tool, I'll design clean prompts, implement function calling, and build proper error handling so your AI feature works reliably every time.
What's included:
✅ LLM API setup & configuration
✅ Prompt design & optimization
✅ Function / tool calling implementation
✅ Error handling & retry logic
✅ Response parsing & formatting
✅ Testing & quality assurance
✅ Clean, documented code delivery
Platforms supported: OpenAI (GPT-4o, Turbo), Anthropic Claude (Sonnet, Opus), Google Gemini (Pro, Flash, Ultra).
Get a fully working AI-powered integration delivered in just 3 days!
Whether you need GPT-4, Claude Sonnet, or Gemini Pro integrated into your web app, automation, or custom tool, I'll design clean prompts, implement function calling, and build proper error handling so your AI feature works reliably every time.
What's included:
✅ LLM API setup & configuration
✅ Prompt design & optimization
✅ Function / tool calling implementation
✅ Error handling & retry logic
✅ Response parsing & formatting
✅ Testing & quality assurance
✅ Clean, documented code delivery
Platforms supported: OpenAI (GPT-4o, Turbo), Anthropic Claude (Sonnet, Opus), Google Gemini (Pro, Flash, Ultra).
Get a fully working AI-powered integration delivered in just 3 days!
Programming Languages
HTML & CSS, Python, JavaCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included $149
These options are included with the project scope.
$149
- Delivery Time 3 days
- Number of Revisions 2
- Number of Pages 3
- Design Customization
- Content Upload
- Responsive Design
Optional add-ons
You can add these on the next page.
Additional Page
(+ 2 Days)
+$100
Source Code
(+ 2 Days)
+$99
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DW
David W.
May 31, 2025
Implementation & Workflow Strategist
It was a pleasure working with Rehman. He was immensely helpful in guiding us toward the right structure for our database and provided valuable insights throughout the process.
TJ
Tarun J.
May 29, 2025
Real estate referal wesbite designer needed
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Gerardo A.
Apr 7, 2025
UX Design for E-commerce website
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Tammam K.
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Tyrone W.
Aug 5, 2024
UX/UI Designer specializing in Shopify
Rehman turned out be a great help as our UX/UI Designer, enhancing our Shopify stores with seamless, engaging designs, and creating custom icons that significantly elevated our digital products' visual appeal and usability. Highly recommend!
About Rehman
AI Agent Developer | Agentic Workflow Architect | LangChain OpenAI n8n
100%
Job Success
Gujranwala, Pakistan - 3:02 am local time
I build autonomous AI agents and multi-step LLM pipelines that don't just automate tasks. They reason, decide, and act.
With 100% Job Success and Top Rated Plus status across 50+ delivered projects, I specialize in turning complex business logic into intelligent systems that run themselves.
𝗪𝗵𝗮𝘁 𝗜 𝗯𝘂𝗶𝗹𝗱:
→ 𝗔𝗜 𝗔𝗴𝗲𝗻𝘁𝘀 & 𝗔𝘂𝘁𝗼𝗻𝗼𝗺𝗼𝘂𝘀 𝗦𝘆𝘀𝘁𝗲𝗺𝘀 — LangChain, LangGraph, OpenAI, Claude API; agents that browse, research, write, and execute without a human in the loop
→ 𝗔𝗴𝗲𝗻𝘁𝗶𝗰 𝗪𝗼𝗿𝗸𝗳𝗹𝗼𝘄 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 — n8n, Make, Zapier, Power Automate; complex multi-step flows that replace entire manual processes
→ 𝗔𝗜 𝗖𝘂𝘀𝘁𝗼𝗺𝗲𝗿 𝗦𝘂𝗽𝗽𝗼𝗿𝘁 & 𝗟𝗲𝗮𝗱 𝗚𝗲𝗻 𝗔𝗴𝗲𝗻𝘁𝘀 — GPT/Claude-powered bots that qualify leads, answer customers, and escalate intelligently
→ 𝗥𝗔𝗚 𝗦𝘆𝘀𝘁𝗲𝗺𝘀 & 𝗞𝗻𝗼𝘄𝗹𝗲𝗱𝗴𝗲 𝗕𝗮𝘀𝗲𝘀 — custom GPT deployments trained on your business data for internal tools and client-facing bots
→ 𝗣𝘆𝘁𝗵𝗼𝗻 𝗔𝗣𝗜 𝗕𝗮𝗰𝗸𝗲𝗻𝗱𝘀 — custom integrations, webhook pipelines, and data processing for when no-code tools hit their ceiling
𝗥𝗲𝗮𝗹 𝗿𝗲𝘀𝘂𝗹𝘁𝘀 𝗜'𝘃𝗲 𝗱𝗲𝗹𝗶𝘃𝗲𝗿𝗲𝗱:
✦ Built a multi-agent lead qualification system that processed 300+ inbound leads/week — zero manual review
✦ Reduced a client's document processing time from 4 hours to under 10 minutes using GPT-4 + n8n
✦ Deployed an AI support agent for a SaaS company that resolved 70% of tickets without human escalation
𝗛𝗼𝘄 𝗜 𝘄𝗼𝗿𝗸:
I don't hand you a working Zap and disappear. Every system I build comes with clean documentation your team can actually maintain, and a 30-day support window after delivery — because real automation should keep working long after I'm done.
𝗦𝘁𝗲𝗽 𝟭: Discovery — I map your current workflow and identify exactly where an agent creates leverage
𝗦𝘁𝗲𝗽 𝟮: Architecture — I design the system before writing a line of code, so you approve the logic first
𝗦𝘁𝗲𝗽 𝟯: Build & Test — I build, stress-test edge cases, and iterate until it's production-ready
𝗦𝘁𝗲𝗽 𝟰: Handoff — full documentation + walkthrough so your team owns it completely
If you're ready to replace a manual process with something that thinks and acts on its own
Let's talk.
Steps for completing your project
After purchasing the project, send requirements so Rehman can start the project.
Delivery time starts when Rehman receives requirements from you.
Rehman works on your project following the steps below.
Revisions may occur after the delivery date.
Discovery & API Access Review your stack and connect the LLM API