Anthropic · OpenAI · Amazon · Funding Round · Crunchbase News
The Week’s 10 Biggest Funding Rounds: AI, Autonomy And Biotech Top The Ranks
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This is a weekly feature that runs down the week’s top 10 announced funding rounds in the U.S. Check out last week’s biggest funding deal roundup here.
Key facts
- Reliable Robotics, $160M, autonomous aircraft: Reliable Robotics, a developer of autonomous aircraft systems, raised $160 million in fresh financing led by Nimble Partners
- OpenAI, $75M, foundational AI: Robinhood Ventures announced that it purchased $75 million worth of San Francisco-based OpenAI’s common stock
- Serif Biomedicines, $50M, biotech: Cambridge, Massachusetts-based Serif Biomedicines, a biotech startup focused on Modified DNA as a new class of medicines, launched with $50 million
- Omni, $120M, AI analytics: Omni, developer of an AI-enabled analytics platform, closed on $120 million in Series C funding led by Iconiq Growth
Summary
Want to keep track of the largest startup funding deals in 2025 with their curated list of $100 million-plus venture deals to U.S.-based companies? This week, half of the top 10 rounds crossed the $100 million mark, which is somewhat unusual in this high-flying era for venture megarounds. Anthropic, $5B, foundational AI: AI giant Anthropic announced that Amazon is investing $5 billion in the company, with up to an additional $20 billion in the future. Reliable Robotics, $160M, autonomous aircraft: Reliable Robotics, a developer of autonomous aircraft systems, raised $160 million in fresh financing led by Nimble Partners.