JetBrains AI vs GitHub Copilot vs Cursor 2026: Best AI IDE for Java and Kotlin Devs
For Java and Kotlin developers in 2026, the AI coding assistant choice is no longer “do I use AI?” — it’s “which AI is worth paying for inside IntelliJ?” JetBrains AI has a native advantage, but GitHub Copilot and Cursor both landed in JetBrains IDEs in March 2026. Here’s what actually matters. JetBrains AI vs GitHub Copilot vs Cursor 2026: Quick Comparison Table JetBrains AI Assistant, GitHub Copilot, and Cursor represent three fundamentally different philosophies for AI-assisted Java development — ecosystem-native integration, market-leading breadth, and agent-first interaction. As of April 2026, JetBrains AI (including Junie) is used by 11% of developers worldwide according to the JetBrains Developer Survey of 10,000+ professionals. GitHub Copilot holds approximately 37% market share in the AI coding tools market, which itself hit $12.8 billion in 2026 — up from $5.1 billion in 2024. Cursor grew 35% in nine months but remains a VS Code fork at heart, making it the outsider of the three when IntelliJ is your home. The right choice depends on whether you prioritize type-safe, compile-safe completions; the largest ecosystem of plugins and CI integration; or the most powerful agentic workflows. ...