The best free AI courses and certificates for upskilling in 2026 - and I've tried them all

I've worked with AI for decades and have a master's degree in education. Here are the top free AI courses online that I recommend - and why.
Futurism

Something Wild Happens to ChatGPT’s Responses When You’re Cruel To It

Researchers found that as their prompts for OpenAI's ChatGPT-4o model grew ruder, the outputs became more accurate.
IEEE

Sentiment Analysis Using LSTM Model for Emotion Detection

Abstract: This research focuses on the role of Natural Language Processing in extracting, analysing, and interpreting textual data to identify sentiment and emotional patterns from tweets. NLP ...

The Bots That Women Use in a World of Unsatisfying Men

Has anyone else lost their want to date real men after using AI?” one Reddit user posted a few months ago. Below came 74 ...

The Hidden AI Cost Few Leaders Track: How Typos Inflate Your LLM Spend

It sounds trivial, almost too silly to be a line item on a CFO’s dashboard. But in a usage-metered world, sloppy typing is a ...
IEEE

Multilingual and Multi-Class Sentiment Classification Using Machine Learning, BERT, and GPT-4o-mini

Abstract: In this study, we investigate multilingual and multiclass sentiment classification by analyzing datasets in Turkish, English, and Italian. The proposed approach consists of three main stages ...