Best AI Coding Agents: the real-cost ranking
AI Coding Agents compared on value per dollar — not feature checklists. Sort by what you care about, check two tools to compare them head-to-head, or use the quick filters to cut to a shortlist.
| Compare | Tool | ToolScore↓ | Price | BYOK | Limits | Value | Speed | Privacy | Quality |
|---|---|---|---|---|---|---|---|---|---|
| AiderPaul Gauthier | 84 | $0OSS as of Sep 16 | ✓ | 9 | 10 | 8 | 10 | 8 | |
| OpenCodeSST | 80 | $0OSS as of Sep 16 | ✓ | 8 | 10 | 8 | 9 | 8 | |
| Gemini CLIGoogle | 77.5 | Free tier/mo as of Sep 16 | ✓ | 9 | 10 | 8 | 6 | 8 | |
| ContinueContinue Dev, Inc. | 77 | $0OSS as of Sep 16 | ✓ | 8 | 9 | 7 | 9 | 7 | |
| ClineCline Bot Inc. | 76.5 | $0OSS as of Sep 16 | ✓ | 6 | 9 | 7 | 9 | 8 | |
| Claude CodeAnthropic | 73 | $20/mo as of Sep 16 | ✓ | 5 | 6 | 8 | 6 | 10 | |
| GitHub CopilotGitHub (Microsoft) | 71.5 | $10/mo as of Sep 16 | — | 7 | 9 | 8 | 6 | 8 | |
| OpenAI CodexOpenAI | 71 | $20/mo as of Sep 16 | ✓ | 6 | 7 | 8 | 6 | 9 | |
| WindsurfCognition | 63 | $15/mo as of Sep 16 | — | 6 | 8 | 8 | 6 | 7 | |
| CursorAnysphere | 62.5 | $20/mo as of Sep 16 | — | 5 | 6 | 8 | 5 | 9 |
Pillar scores 0–10 · see methodology. “Lowest token burn” = tools whose limits hold up a full working day; “Best value” = most output per dollar.
What to look for in ai coding agents
Token burn beats sticker price
The $20/mo line is marketing. What matters is how many hours of real work that tier holds before throttling or overages — our Limits pillar tracks exactly that.
BYOK changes the math
Tools that accept your own API key turn a subscription into raw token cost — often 3–6× cheaper at the same volume. The BYOK column shows who allows it.
Privacy defaults, not promises
Several popular agents train on your code by default unless you opt out. The Privacy pillar reflects defaults — check before onboarding client work.
Billing transparency
Fuzzy usage windows and credit meters make monthly cost unpredictable. We score how knowable your bill is before the invoice arrives.