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$
USD
I will build a tested custom ai chatbot with rag for your website
Alex R
About this gig
Most document chatbots guess. Mine don't.
I build a RAG chatbot that answers only from your documents and proves it:
- Every answer cites the file and page
- If the answer isn't in your documents, it says so instead of guessing
- A test report with your own questions: at least 90% correct is promised, 100% is the goal
- Reworded and control questions, so it works for real users, not just the test
- Upload as many documents as you need
- A simple web chat in every package
Standard and Premium add: online on your website or in your account, handoff to a human (email or Slack), password protection and an overview of unanswered questions.
How it works:
1. You send your documents and test questions with the correct answers
2. I build, test and improve until the goal is met
3. You get the chatbot, the full source code and the test report
Why me: I built four features that are now part of PydanticAI, an open-source AI framework with over 20 million monthly downloads. My own RAG chatbot answers 24 of 25 test questions correctly. German-speaking, based in Germany.
You use your own OpenAI, Gemini or Claude API key. Scanned PDFs or more than 1,000 files? Message me first.
Get to know Alex R
Alex R
AI Developer for RAG Chatbots and Python
- FromGermany
- Member sinceFeb 2022
Languages
English, German
I build AI chatbots that answer from your own documents: with sources, an honest "that's not in your documents" and a test report that shows how often they are right.
I'm a freelance AI developer (Python) working with RAG, LangGraph, the OpenAI, Claude and Gemini APIs, MCP, FastAPI and Docker. I built four features that are now part of PydanticAI, an open-source AI framework with over 20 million monthly downloads.
I speak German and English. Tell me about your documents and I'll suggest the right package.
My Portfolio
FAQ
Can you guarantee the chatbot never gives a wrong answer?
No honest developer can. I promise at least 90% correct answers on your agreed test questions, aim for 100% and show the real result in the test report. If an answer isn't in your documents, the chatbot says so.
Which documents can I use?
PDF, TXT and Markdown files, as many as you need. For scanned PDFs or more than 1,000 files, please message me first so I can make a custom offer.
Which AI model do you use and what does it cost to run?
OpenAI, Google Gemini or Anthropic Claude with your own API key, so you pay the provider directly. The test report includes an estimate of your running costs.
What do you need from me?
Your documents and your test questions with the correct answers: 10, 25 or 50 depending on the package. I can help you write good test questions.
Who owns the code and the data?
You do. You get the full source code, and the chatbot runs on your computer or in your own account. I delete your documents after delivery.
What happens after delivery?
Standard includes 7 days and Premium 14 days of support. Premium also includes one review of the real questions after 30 days. Ongoing monthly reports are available as a custom offer.
Can the chatbot answer in German?
Yes. German is my native language, and the chatbot can answer in German, English or both.
How quickly do you reply?
Within 24 hours, usually the same day (CET, Germany time zone).
