Terra and Ares are the two purest agentic offensive security platforms on this list. Both run swarms of AI agents, both validate real exploitability, both run continuously against production. The difference is a fundamental bet on how the work gets done. Terra pairs its agents with a human in the loop. A pentester directs and oversees the AI, steps in for controlled exploitation, and signs off. That model gives regulated enterprises the human oversight some of them want, and it lets Terra stretch across web, AI red teaming, and network infrastructure. Ares made the opposite bet. She is fully autonomous. No pentester sits in the loop, no human gates the work, and she scales on compute instead of headcount. She stays focused on the application layer, the APIs, web apps, and mobile apps where most breaches begin, and she attacks them black-box, with no access to your source code, exactly as an outside adversary would. Terra is the broad, human-governed option. Ares is the autonomous specialist.