GitHub Copilot Agent Mode & Plan Mode in IntelliJ IDEA Chat, Edits, AI Coding Models Explained 2026
In IntelliJ IDEA, GitHub Copilot has evolved far beyond simple autocomplete. It is now a multi-modal AI development assistant with powerful modes designed to automate coding, refactoring, and project planning.
This video explains the latest Copilot modes available in IntelliJ and how they transform the developer workflow.
🚀 Copilot Modes in IntelliJ
Chat Mode
Ask questions about your code, generate snippets, explain logic, and use @project context to analyze your entire repository.
Edits (Copilot Edits)
Apply AI-powered changes across multiple files at once with a safe diff review interface before committing.
Agent Mode
An autonomous AI workflow where Copilot can research your codebase, ask clarifying questions, run configurations, and execute terminal commands.
Plan Mode (inside Agent Mode)
Before writing code, Copilot generates a high-level implementation plan so developers can review architecture and strategy first.
🤖 AI Model Options
Depending on your plan, Copilot can use advanced AI models such as:
• GPT‑4o
• Claude 3.5 Sonnet
• Gemini 1.5 Pro
💼 Copilot Subscription Plans
• Free – limited messages for beginners
• Pro – unlimited usage for individual developers
• Business – team management and security features
• Enterprise – advanced customization and model controls
If you want to learn AI-powered coding, automated refactoring, and next-generation developer workflows, this guide shows how Copilot is reshaping software development inside IntelliJ.
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