Aider vs Cline
The line that matters isn't features — it's what a working month costs and where each tool bites. Data as of 2026-09-16 / 2026-09-16.
Aider higher ToolScore
Paul Gauthier · open-source
Open-source terminal pair programmer that writes git commits for you — bring any model, including local ones.
Cline higher ToolScore
Cline Bot Inc. · open-source
Open-source VS Code agent with BYOK transparency — powerful, but famous for eating tokens by design.
| Dimension | Aider | Cline |
|---|---|---|
| Starting price | $0 (OSS) | $0 (OSS) |
| Pricing model | open-source | open-source |
| BYOK (own API key) | Yes | Yes |
| Limits score | 9.0 | 5.5 |
| Privacy score | 9.5 | 9.0 |
| Quality score | 8.0 | 8.0 |
| Best for | Truly model-agnostic: swap providers per task, lock in nothing | Runs inside VS Code — full IDE feedback loop, terminal, and diff view |
| Watch out for | Weak models produce weak commits — silently | The agentic loop is a token furnace |
Aider — score breakdown
Price / Value 9.5
Token & Rate Limits 9.0
Speed / Latency 7.5
Privacy & Retention 9.5
BYOK (Own API Key) 10.0
Output Quality 8.0
Stability 7.5
Ease of Setup 6.5
Billing Transparency 9.5
Support & Community 7.0
Cline — score breakdown
Price / Value 9.0
Token & Rate Limits 5.5
Speed / Latency 7.0
Privacy & Retention 9.0
BYOK (Own API Key) 10.0
Output Quality 8.0
Stability 6.0
Ease of Setup 8.0
Billing Transparency 9.0
Support & Community 5.0
Both reviews with sources and verification status: Aider · Cline