Aider vs JetBrains AI
Auto-updated comparison · last refreshed September 3, 2026
TL;DR
| Aider | JetBrains AI | |
|---|---|---|
| Type | cli | ide-native |
| Vendor | open source | JetBrains |
| Pricing | Free tier (you pay LLM API costs directly) | Free tier · Pro $10/mo (AI Pro on top of IDE license) |
| Autocomplete | No | Yes |
| Agent mode | Yes | Yes |
| MCP support | No | No |
| Local models | Yes | Yes |
| Self-hosted | Yes | No |
| Codebase indexing | No | Yes |
| Team features | No | Yes |
Where Aider wins
- open source
- any model via API
- excellent diff format
Where JetBrains AI wins
- deep IDE integration
- excellent for JVM langs and Kotlin
Weaknesses
Aider: no GUI; you pay API costs directly; steeper learning curve
JetBrains AI: requires JetBrains subscription; less flexible than Cursor
Best for
Pick Aider if you are OSS purists, or power users, or local LLM enthusiasts.
Pick JetBrains AI if you are JVM/Kotlin/Swift devs already on JetBrains.
FAQ
Is Aider more expensive than JetBrains AI?
Free tier (you pay LLM API costs directly) vs Free tier · Pro $10/mo (AI Pro on top of IDE license). Compare the Pro tiers first if you're a solo dev; Business/Enterprise only matters for teams.
Do Aider and JetBrains AI use the same AI models?
Aider supports: any via API. JetBrains AI supports: claude-sonnet-4-6, gpt-4.1, gemini-2.5-pro. Most modern tools default to Claude Sonnet 4.6 in 2026.
Can I use both?
Yes. They don't conflict at the file level. Some devs use one for autocomplete and one for agent work.
Related comparisons
Best Aider and JetBrains AI pairings by language
- Python: Aider for Python · JetBrains AI for Python
- TypeScript: Aider for TypeScript · JetBrains AI for TypeScript
- Rust: Aider for Rust · JetBrains AI for Rust
- Go: Aider for Go · JetBrains AI for Go