<p>Kaggle is the world's largest data science and machine learning competition platform, hosting hundreds of active competitions ranging from beginner Getting Started challenges to research and featured contests with substantial cash prize pools. Run by Google, Kaggle provides free compute, datasets, and a public profile for showcasing results.</p> <ul> <li>Open globally; participants must be 18+ or submit Kaggle's parent/guardian consent form for minors</li> <li>Competition tiers: Getting Started, Playground Series, Featured, Research, and Community</li> <li>Individual competitions run from days to several months with rolling deadlines</li> <li>Free account includes GPU and TPU notebook access, datasets, and forums</li> <li>Leaderboard-based bronze, silver, and gold medals lead to Kaggle Expert, Master, and Grandmaster tiers</li> <li>Featured competitions regularly offer prize pools from USD 25,000 up to several hundred thousand</li> </ul> <p>Create a free account and join any competition directly from the Kaggle Competitions page.</p>