You Are The Star Books · Design and build
AI content moderation
For You Are The Star Books, I designed and shipped a Gemini-based multilingual content moderation pipeline using retrieval-augmented generation (RAG) on Google Cloud. It replaced a third-party moderation tool and cut monthly costs from over £8,000 to under £100.
- Client
- You Are The Star Books
- Studio
- Rigstore
- Role
- Design and build
- Year
- 2025 to 2026
- Tech
- Python, Google Cloud Platform, Gemini, RAG
The challenge
You Are The Star Books relied on a third-party moderation tool that cost over £8,000 a month. Moderation had to work across many languages and keep up as usage grew, without the cost growing with it.
What I did
I designed and shipped a multilingual LLM moderation pipeline built on Gemini, using retrieval-augmented generation (RAG), so the cost follows usage instead of a fixed licence.
- AI-driven moderation: Gemini detects and flags inappropriate content, misinformation, harmful language and spam.
- Many languages: moderation works in over 50 languages.
- Custom moderation levels: each user can set how strict moderation should be for their community.
- Built to scale: the pipeline runs on Google Cloud with Python and scales automatically with usage.
The outcome
- The pipeline replaced the third-party tool.
- Monthly moderation costs fell from over £8,000 to under £100.
- Moderation now runs in real time across many languages, at a fraction of the previous cost.
