JetBrains AI Assistant
JetBrains AI Assistant is a proprietary IDE plug-in for AI-assisted coding, built by JetBrains (released 2023-12). JetBrains AI Assistant integrates with 5 verified models, including Claude Sonnet 4.6, Claude Opus 4.6, and Gemini 2.5 Pro. It runs as an extension in VS Code and JetBrains IDEs, pairing editor context with chat, completions, multi-file edits, and code review workflows for daily development.
Overview
Native AI assistant integrated into all JetBrains IDEs with context-aware code generation, Junie autonomous agent, and AI credits system. Supports Claude and GPT models with local model option.
Featured Model Specs
| Model | Lab | Released | Context | Reasoning | Open source |
|---|---|---|---|---|---|
| Claude Sonnet 4.6 | Anthropic | 2026-02-17 | 1M | Yes | No |
| Claude Opus 4.6 | Anthropic | 2026-02-05 | 1M | Yes | No |
| Gemini 2.5 Pro | Google DeepMind | 2025-06-17 | 1M | No | No |
| GPT-4.1 | OpenAI | 2025-04-01 | 1M | No | No |
| GPT-4o (2024-11-20) | OpenAI | 2024-11-20 | 128K | No | No |
Model Compatibility Matrix
| Model | Lab | Default | Access tier | Notes |
|---|---|---|---|---|
| Claude Sonnet 4.6 | Anthropic | No | AI Pro | Available via AI credits |
| Claude Opus 4.6 | Anthropic | No | AI Pro | Available via AI credits |
| Gemini 2.5 Pro | Google DeepMind | No | AI Pro | Available via AI credits |
| GPT-4.1 | OpenAI | No | AI Pro | Available via AI credits |
| GPT-4o (2024-11-20) | OpenAI | No | AI Pro | Available via AI credits |
Underlying Models
Compare to Similar Harnesses
FAQ
What is JetBrains AI Assistant?
JetBrains AI Assistant is a proprietary IDE plug-in for AI-assisted coding, built by JetBrains (released 2023-12). It runs as an extension in VS Code and JetBrains IDEs, pairing editor context with chat, completions, multi-file edits, and code review workflows for daily development. It is primarily used for pair programming, code review, and repository-aware edits inside an editor.
What models does JetBrains AI Assistant support?
JetBrains AI Assistant runs Claude Sonnet 4.6, Claude Opus 4.6, Gemini 2.5 Pro, GPT-4.1, GPT-4o (2024-11-20).
Is JetBrains AI Assistant open source?
No, JetBrains AI Assistant is a proprietary IDE plug-in.
What are alternatives to JetBrains AI Assistant?
Alternatives include Cursor, GitHub Copilot, and Windsurf.
When was JetBrains AI Assistant released?
JetBrains AI Assistant was released in 2023-12.