Commercial Platforms
Commercial harness and managed agent platforms.
| Platform | Type | Model Support | Key Feature |
|---|---|---|---|
| Claude Code | Monolithic harness | Claude | 512K line harness, deep IDE integration |
| Codex | Cloud HaaS | GPT | Cloud sandbox, parallel tasks |
| Cursor | IDE-native harness | Multi-model | AI-first IDE, tab completion |
| Windsurf | IDE agent | Multi-model | Flow-based agent in editor |
| Devin | Cloud agent | Proprietary | Autonomous software engineer |
| CREAO | Agent platform | Multi-model | Enterprise AI Super Agent |
This list focuses on platforms with significant harness engineering. Omissions are not endorsements or criticisms — suggest additions via PR.