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The viral general-purpose AI agent that works on its own — acquired by Meta for $2B+
HQ: Singapore (Chinese-founded; Butterfly Effect) | Founded: 2024 | Employees: ~100 (2025, est.) | Stage: Acquired by Meta (December 2025) | Website: https://manus.im
Manus emerged from Butterfly Effect, the Chinese-founded company behind the Monica (Monica.im) AI assistant, founded by Ji Yihao (Joey Ji). The team had spent years building consumer AI products; Manus — Latin for 'hand' — was the culmination: an autonomous agent that doesn't just chat but acts, executing multi-step tasks end-to-end across web browsing, computer use, coding, and data analysis.\n\nManus launched on March 6, 2025, and instantly went viral. Invite codes became a scarcity commodity on Chinese social media, and the product earned comparisons to DeepSeek as another 'China moment' in AI. By April 2025 it had raised a $75M Series B led by Benchmark at a $500M post-money valuation — a remarkable trajectory for a product barely a month old — and growth compounded: 20%+ month-over-mo
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