Rebellion Defense vs ManTech
Side-by-side comparison of AI visibility scores, market position, and capabilities
AI-native defense software startup building autonomous mission platforms for the U.S. military and allies. Raised $224M+ total; $1B valuation at Series B in 2021.
About
Rebellion Defense is a Washington, D.C.-based AI and machine learning software company founded in 2019 by former U.S. government officials and defense tech engineers. The company builds mission-focused AI products for national security customers, with a product suite spanning Iris (predictive threat analytics), SECURE (cyber vulnerability assessment), Dispatch (autonomous mission planning), and Nova (defense analysis and decision support).\n\nRebellion's SensorOS platform provides defense customers with a fused operational picture of the threat environment, automated orchestration across distributed hardware and software, and AI-driven decision support for warfighters. Iris is designated an awardable vendor on the DoD's Tradewinds Solutions Marketplace, enabling streamlined government acquisition. In April 2025 the company expanded a U.S. Navy contract for target recognition enhancement.\n\nWith 200–500 employees across offices in Washington D.C., Seattle, and London, Rebellion represents a generation of defense tech startups aiming to bring Silicon Valley engineering velocity to national security missions. The company is positioned as a software-first counterpart to hardware-focused peers such as Anduril, targeting command, control, and intelligence automation at every echelon.
Private defense IT and cyber intelligence firm serving U.S. national security agencies. Taken private by Carlyle Group in 2022 in a $4.2B deal; 9,000+ cleared professionals.
About
ManTech International is a U.S. defense IT and cybersecurity company founded in 1968, headquartered in Herndon, Virginia. Taken private by The Carlyle Group in a $4.2 billion deal in 2022, ManTech focuses exclusively on national security missions for the Department of Defense, intelligence agencies, and federal law enforcement. The company employs over 9,000 cleared professionals capable of working in classified environments across domestic and international locations.\n\nManTech's core competencies include cyber operations support, intelligence analysis, software development, data analytics, digital modernization, and systems engineering. The company has specialized practices in full-spectrum cyber (offensive, defensive, and vulnerability research), geospatial intelligence (GEOINT), and special operations technical support. Key long-duration contracts span agencies such as DISA, U.S. Cyber Command, NGA, and NSA, reflecting deep mission trust built over decades.\n\nManTech regularly competes on large indefinite delivery/indefinite quantity (IDIQ) vehicles and maintains a reputation for executing on high-classified mission programs. The company is positioned to benefit from DoD's accelerating investment in offensive and defensive cyber capabilities and AI-driven intelligence operations, particularly as the Pentagon prioritizes full-spectrum cyber dominance across all warfighting domains.
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