Practice & Contests

Sharpen your skills with past IOAI problems and related AI competitions

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25+ Past Contests
500+ Problems
100+ Solutions
IOAI 2025

International Olympiad in AI 2025

The latest IOAI competition featuring problems on ML, Deep Learning, and AI applications.

August 2025 China
Antique Hard View Problem
Chicken Counting Hard View Problem
Concepts Medium View Problem
Pixel Medium View Problem
Radar Medium View Problem
Restroom Medium View Problem
IOAI 2024

International Olympiad in AI 2024

Second edition of IOAI with challenging problems on various AI domains.

August 2024 Bulgaria
Helo_BOBAI Hard View Problem
Lost in Hyperspace Hard View Problem
Madarian_Cow Medium View Problem

Machine Learning Fundamentals

Linear Regression from Scratch Easy Solve
Implement K-Means Clustering Medium Solve
Decision Tree Implementation Medium Solve
SVM with Custom Kernels Hard Solve

Deep Learning

Build a Simple Neural Network Easy Solve
Implement Backpropagation Medium Solve
CNN for Image Classification Medium Solve
Implement Attention Mechanism Hard Solve

Natural Language Processing

Text Classification with TF-IDF Easy Solve
Word Embeddings from Scratch Medium Solve
Named Entity Recognition Medium Solve
Build a Transformer Model Hard Solve

Computer Vision

Image Preprocessing Pipeline Easy Solve
Object Detection with YOLO Medium Solve
Image Segmentation Medium Solve
GANs for Image Generation Hard Solve