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I will a custom ai chatbot with rag using your documents and data
Lorenzo
About this gig
Need an AI chatbot that actually understands YOUR business data? I build custom RAG (Retrieval-Augmented Generation) systems that answer questions using your documents, knowledge base, or internal data.
What you get:
- Custom AI chatbot trained on YOUR content (PDFs, docs, websites, databases)
- Accurate responses with source citations
- Clean Python codebase with full documentation
- Integration-ready (API endpoint, web widget, or standalone app)
Perfect for:
- Customer support automation
- Internal knowledge bases
- Document Q&A systems
- Employee onboarding bots
My background:
MSc AI candidate at ETH Zurich with production experience building RAG systems. I've delivered chatbots with <500ms response time and high retrieval accuracy using LangChain, OpenAI/Claude APIs, and vector databases (FAISS, Pinecone).
Tech stack: Python, LangChain, OpenAI API, Claude API, FAISS, FastAPI
Every delivery includes source code, documentation, and a walkthrough call.
Message me with your use case for a free assessment.
Get to know Lorenzo
Lorenzo
AI Engineer
- FromItaly
- Member sinceAug 2019
- Avg. response time2 hours
- Last delivery1 month
Languages
Italian, English, Spanish, German
AI Engineer completing MSc in Artificial Intelligence at ETH Zurich. I help businesses save time and scale with intelligent automation.
What I do:
- AI chatbots and RAG systems that understand your data
- Workflow automation (N8N, Make, Zapier)
- Custom AI integrations and API development
Background: Built production systems processing millions of data points. AWS certified. Experience with startups (secured €100K+ funding) and enterprise clients.
Tech: Python, LangChain, OpenAI/Claude APIs, FastAPI, vector databases.
Based in Zurich. Fast communication, clean code, clear documentation.
FAQ
What types of documents can I use?
PDFs, Word documents, text files, CSVs, websites, Notion pages, and most structured data formats. I can also connect to databases and APIs for dynamic content.
Which AI model do you use?
I primarily use OpenAI GPT-4 or Claude, depending on your needs and budget. I can also implement open-source models (LLaMA, Mistral) for on-premise solutions with no API costs.
Do I need technical knowledge to use the chatbot?
No. I provide everything ready to deploy, including clear documentation and a walkthrough call. For ongoing maintenance, basic Python knowledge helps but is not required.
What are the ongoing costs after delivery?
You'll pay only for API usage (typically $5-50/month depending on volume). Self-hosted options with open-source models have zero ongoing costs.
Can you integrate the chatbot with my existing systems?
Yes. I can integrate with websites (embed widget), Slack, Discord, or provide a standalone API. CRM and database integrations are available in Standard and Premium packages.
