42,000 Instant Answers Without APIs — TF-IDF Q&A System

Part 3 of 5 | ← Part 2 | Part 4 → | View Series The Problem With LLMs for Retrieval I considered using GPT or Claude for Q&A. Open the API, feed it cricket data, done. Three problems: Cost: $0.01 per request × 10,000 daily users = $100/day Latency: API calls take 500-2000ms Hallucinations: An LLM might confidently invent data ("Suryakumar hit 12 sixes") if it's unsure For cricket facts, hallucinations are unacceptable. The Solution: TF-IDF + Cosine Similarit...