The Week’s 10 Biggest Funding Rounds: World-Model Startup Odyssey Leads With $310M In Slower Week For Large Deals

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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.

This week was not an exceptionally busy one for large funding deals, though we saw sizable rounds in a lively mix of sectors ranging from AI to fintech to quantum computing and cybersecurity. The biggest raise was for AI world-model developer Odyssey, which secured a $310 million Series B. Venture investors also put money into AI infrastructure and AI models for biotech.

1. Odyssey, $310M, artificial intelligence: Menlo Park, California-based Odyssey raised $310 million at a $1.45 billion valuation in a Series B round led by Natural Capital. Other investors included Amazon, AMD Ventures, EQT, Google Ventures, IQT and SignalRank. Odyssey develops AI world models that create multimodal simulations of real-world environments. The startup has now raised $337 million in funding to date, per Crunchbase.

2. Chronograph, $140M, fintech: New York-based Chronograph secured a $140 million private equity round led by Sixth Street Growth. The company provides portfolio monitoring, reporting and diligence software for private capital investors, an increasingly important market as private assets continue to grow. The new raise, which it describes as growth capital, brings its total funding to date to $160 million, according to Crunchbase.

3. (tied) Hydra Host, $100M, AI infrastructure: Boulder, Colorado-based Hydra Host raised a massive $100 million Series A led by Kindred Ventures. A long list of other investors joined, including 10x Founders, ARK Investment Management, Comcast Ventures, Founders Fund and Nvidia. The company operates a bare-metal GPU platform that connects customers to distributed AI computing infrastructure. With the latest investment, it has raised just under $119 million to date.

3. (tied) Ent.AI, $100M, cybersecurity: Startups that promise to protect companies in the AI era are also raising massive sums right out of the gate. This week, Santa Clara, California-based Ent.AI emerged from stealth and said it has raised $100 million in seed funding led by Decibel Partners. Other investors included Craft Ventures, Crosspoint Capital Partners, Felicis 1, IQT, Sequoia Capital and Shield Capital. The company, founded by former RiskIQ executives and members of the Microsoft Security Copilot team, offers an AI-powered workspace security platform that it says can analyze user and AI-agent behavior in real time to proactively prevent cyber threats.

3. (tied) Twenty Technologies, $100M, cybersecurity, defense: Arlington, Virginia-based Twenty Technologies secured a $100 million Series B at a $1 billion valuation. The round was led by Accel, with participation from Caffeinated Capital, Friends & Family Capital and Point72 Ventures. The company develops AI-enabled cyber warfare systems for the U.S. military and intelligence community, helping automate and accelerate offensive cyber operations at scale. Founded by former cyber operators and defense technologists, Twenty Technologies has now raised $138 million to date, per Crunchbase. It’s part of a growing wave of venture-backed startups building software for military and national security purposes.

3. (tied) Atom Computing, $100M, quantum computing: Berkeley, California-based Atom Computing raised a $100 million Series C led by Third Point Ventures that brings its total private investment to date to just over $191 million, per Crunchbase. Cisco Investments and DCVC also backed its latest round. Along with the venture money, Atom also received a $100 million Letter of Intent from the U.S. Department of Commerce under the CHIPS and Science Act that gives the startup additional public backing in exchange for a minority government stake. The company develops neutral-atom quantum computers, one of several competing architectures seeking to commercialize quantum computing. It is one of several quantum startups to receive sizable funding deals this year, following a record-breaking venture investment year for the sector in 2025.

7. Triveni Bio, $65M, biotechnology: Watertown, Massachusetts-based Triveni Bio raised a $65 million Series C co-led by Ascenta Capital and Janus Henderson Investors. Additional participation came from Deep Track Capital. The company develops antibody-based therapeutics for immunological and inflammatory diseases. It has now raised $272 million total from investors, per Crunchbase.

8. (tied) AttoTude, $52M, semiconductor infrastructure: Menlo Park, California-based AttoTude secured a $52 million Series C led by The Westly Group. Other investors included Allegis Capital, Canaan Partners, DNX Ventures, Keysight Technologies, Mayfield Fund 2, Sutter Hill Ventures and Wing Venture Capital. The startup develops high-speed interconnect technology for AI and hyperscale data centers and has raised $142 million to date, according to Crunchbase. It comes amid robust funding for semiconductor startups this year.

8. (tied) Richard Roths Media, $52M, digital media: Beverly Hills, California-based Richard Roths Media raised a $52 million venture round led by GGC Capital Investment. The company says it delivered AI-driven marketing and advertising services for “high trust” industries such as banking, law and healthcare. The investment appears to be its first outside capital, per Crunchbase.

10. (tied) Bland AI, $50M, artificial intelligence: San Francisco-based Bland AI raised a $50 million Series C led by Dell Technologies Capital. The long list of other investors includes Y Combinator, Scale Venture Partners, Affirm founder Max Levchin, Archerman Capital, Tribeca Venture Partners and others. The company develops AI-powered voice agents that automate inbound and outbound phone conversations for enterprises, a category that has seen growing adoption as businesses look to replace traditional call-center workflows. It has raised $106 million to date, according to Crunchbase data.

10. (tied) Interchecks, $50M, fintech: Brooklyn-based Interchecks secured a $50 million Series C led by Bettor Capital, Commerce Ventures, Decades Holdings and Thayer Street Partners. The company operates a payments platform that allows businesses to manage deposits and payouts through a single API, reflecting continued investor interest in infrastructure that simplifies financial operations. It has now raised just under $79 million to date.

10. (tied) Radical Numerics, $50M, artificial intelligence, biotechnology: Menlo Park, California-based Radical Numerics emerged from stealth and said it has raised a $50 million seed round led by Emergence Capital, with participation from First Spark Ventures, Obvious Ventures, Factory and Triatomic Capital. The startup is developing AI models designed to simulate and predict biological systems, with the goal of accelerating drug discovery and advancing precision medicine.

Large non-US deals:

• The largest startup deal outside of the U.S. this week was very large indeed, and also very unusual. DeepSeek, the Chinese AI chatbot startup that briefly roiled public AI-related stocks in early 2025, reportedly took its first outside financing, worth roughly $7.4 billion. The Series A deal, however, comes with a lot of atypical caveats, notably that investors in the deal didn’t actually receive a stake in DeepSeek, but rather in an LLC controlled by founder Liang Wenfeng, per reporting by The Information. Those investors also reportedly face a five-year lockup and receive no voting rights.

Methodology

We tracked the largest announced rounds in the Crunchbase database that were raised by U.S.-based companies for the period of June 13-18. Although most announced rounds are represented in the database, there could be a small time lag as some rounds are reported late in the week.

Illustration: Dom Guzman