Top 10 Free AI Tools You Should Be Using in 2025

May 19, 2025 · 2 min read · 1. ChatGPT What it does: AI assistant that writes, codes, brainstorms, and more Why use it: It’s like having a 24/7 genius at your fingertips Free tier: Yes (with paid upgrade for GPT-4o) Link: chat.openai.com 2. Notion AI What it does: AI wri...