JetBrains AI Assistant / Junie vs Supermaven: Side-by-Side Comparison 2026
JetBrains AI Assistant / Junie vs Supermaven comparison 2026. Side-by-side features, pricing & capabilities.
JetBrains AI Assistant / Junie is an editor extension from JetBrains — native ai assistant for jetbrains ides. Supermaven is an editor extension from Supermaven (acquired by Cursor) — ultra-fast ai code completion (sunset).
JetBrains AI Assistant / Junie
JetBrains AI Assistant / Junie — AI Code Assistant from JetBrains. IDE-Integrated AI.
- ✓ Code completions
- ✓ AI chat
- ✓ Junie (autonomous agent)
- ✓ Multi-file editing
- ✓ Terminal commands
Free / $10/mo · 3 plans
Supermaven
Supermaven was an ultra-fast AI code completion tool. Acquired by Anysphere (Cursor) in November 2024 and sunset in November 2025. Its technology now powers Cursor's Tab AI. Existing extensions still provide basic autocomplete but no new features or paid plans.
- ✓ Code completions
- ✓ AI chat
- ✓ Adaptive learning
- ✓ Low-latency suggestions
Free / $10/mo · 3 plans
| Feature | JetBrains AI Assistant / Junie | Supermaven |
|---|---|---|
| Category | Extension | Extension |
| Starting Price | Free | Free |
| Model Family | Multi-model | GPT-based |
| Agentic Mode | ✓ | — |
| Multi-File Editing | ✓ | — |
| Terminal Commands | ✓ | — |
| Test Generation | ✓ | — |
| Debugging | ✓ | — |
| Refactoring | ✓ | — |
| Documentation | ✓ | — |
| Git Integration | ✓ | — |
| Open Source | No | No |
Pricing verified Mar 20, 2026. JetBrains AI Assistant / Junie pricing | Supermaven pricing
Key Differences
- Model family: JetBrains AI Assistant / Junie uses Multi-model; Supermaven uses GPT-based.
- Agentic mode: JetBrains AI Assistant / Junie supports agentic mode; Supermaven does not.
- Bring your own key: JetBrains AI Assistant / Junie supports BYOK; Supermaven does not.
- Platforms: JetBrains AI Assistant / Junie runs on Linux, Windows, macOS; Supermaven runs on Desktop.
- Provider: JetBrains AI Assistant / Junie is built by JetBrains; Supermaven is built by Supermaven (acquired by Cursor).
- Capabilities: JetBrains AI Assistant / Junie has multi-file editing; JetBrains AI Assistant / Junie has terminal commands; JetBrains AI Assistant / Junie has test generation; JetBrains AI Assistant / Junie has debugging.
Which Should You Choose?
Choose JetBrains AI Assistant / Junie if you want native AI assistance with multi-model choice and agentic capabilities. Choose Supermaven if you want ultra-low-latency completions that adapt to your coding style. Read our full reviews to see which fits your workflow.