Building a Multilingual Sentiment Analysis API with Google Gemini — Free Tier Only

I was building a social listening tool for a client. They wanted sentiment analysis on 10K+ tweets daily. Every SaaS ML API quoted me $200-500/month. Then I realized: Google Gemini's free tier could handle this. I built the entire thing in a weekend. Three months later, we're processing 50K+ text samples daily—for zero dollars. The Reality Check Most sentiment analysis APIs are bloated. You get scores, confidence metrics, entity extraction—tools you don't need. What you actually want: is this text positive, negative, or neutral? Google Gemini changed the game. The free tier gets you: 60 requests/minute (scaling up is cheap) Multilingual support (tweets in Portuguese? No problem) No minimum commitment Fast responses (usually sub-500ms) I wrapped it in a serverless API on Cloudflare Workers. Now you get instant sentiment analysis without the bill. What This API Analyzes The Degani AI Text Analyzer breaks down text into signals you can actually use. POST /analyze - Full sentiment breakdow