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Companies

Valthos

AI for detecting biothreats and designing countermeasures

Raised to date

$27.3M

of $27.5M offered across 1 Form D filing

Still open
$200K
Investors
5
Last filed
Apr 1, 2026

About

Valthos is a New York-based biodefense company building frontier AI systems that identify biological threats and design medical countermeasures in real time. Its software rapidly characterizes biological sequences and updates medicines against emerging or engineered pathogens, aimed at compressing the time between detecting a threat and fielding a therapeutic. The company emerged from stealth in late 2025 with $30M from the OpenAI Startup Fund, Lux Capital and Founders Fund, and its team draws from Palantir, DeepMind, the Broad Institute and the Arc Institute.

Couples real-time characterization of biological sequences with automated design of medical countermeasures, so detection and therapeutic response happen in one adaptive loop rather than as separate multi-year processes.

Funding

  • EquityFiled Apr 1, 2026Form D
    $27.3M/ $27.5M

Product

Valthos biodefense platform

AI biosecurity software

AI software that characterizes biological sequences as they are observed and designs or updates medical countermeasures against them in real time.

  • Real-time characterization of biological sequences
  • Automated design and updating of medical countermeasures
  • Detection of emerging biological threats, including AI-engineered ones

Built for

Government agencies (biodefense, public health, national security) and life sciences organizations

People on file