Castelion vs Maximus
Side-by-side comparison of AI visibility scores, market position, and capabilities
Raised $350M Series B (Dec 2025). $50M US Navy contract for Blackbeard hypersonic prototyping. 1,000-acre solid rocket motor facility under construction.
About
Castelion is a defense startup developing the Blackbeard hypersonic missile system, one of the few startups with an active US Navy contract for hypersonic weapons full-scale prototyping and early operational fielding. The company raised $350 million in Series B financing in December 2025 and secured a $50 million US Navy contract for Blackbeard prototyping, directly addressing the DoD's urgency to field hypersonic strike capability as China and Russia have demonstrated operational hypersonic weapons.
Leading government BPO and program administration firm. $5.43B FY2025 revenue. Runs Medicaid, Medicare, unemployment, and social-program eligibility for federal and state agencies globally.
About
Maximus is a global government services company founded in 1975 and headquartered in Tysons, Virginia. Trading on the NYSE (ticker: MMS), Maximus reported fiscal year 2025 revenue of $5.43 billion, up 2.4% year-over-year, providing outsourced business process management, program administration, and digital services to federal, state, and local government agencies across health, employment, student loans, and social assistance programs.\n\nThe company's services include eligibility determinations for Medicare, Medicaid, CHIP, and marketplace health insurance, unemployment insurance program administration, workforce development, tax credits processing, and benefits enrollment. Maximus operates in the United States, Australia, Canada, and the United Kingdom, processing millions of citizen interactions annually. Key technology capabilities include AI-powered contact center solutions, robotic process automation for claims adjudication, and digital intake platforms.\n\nMaximus has been expanding its digital technology portfolio to automate manual workflows in government programs, reduce fraud and improper payments, and improve citizen experience through omnichannel service delivery. The company plays a critical role administering large-scale healthcare and benefit programs, including the federal Marketplace enrollment support contract and state Medicaid eligibility operations. FY2026 revenue guidance is $5.225–$5.425 billion.
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