AI Evaluation & Safety

HiddenLayer

ByDecipherU Editorial
Headquarters
Austin, Texas
Founded
2022
Employees
50-100
Ownership
private

HiddenLayer focuses on machine learning model security: detecting adversarial inputs, model theft, model tampering, and supply-chain attacks against ML pipelines. The company's Automated Red Teaming product runs adversarial probes against deployed models continuously, and the Model Scanner product inspects model artifacts for malicious code. HiddenLayer raised a $50M Series A in 2023 with M12 (Microsoft's venture fund) leading.

Why this matters in 2026

HiddenLayer research published in early 2024 demonstrated practical model-theft attacks against GPT-class models via the OpenAI API. The work directly shaped how foundation labs throttle and watermark inference responses.

Products

  • HiddenLayer Model Scanner (artifact inspection)
  • HiddenLayer AISec Platform (runtime detection)
  • Automated Red Teaming

Primary focus

Model security: detecting adversarial attacks, model theft, and ML supply chain compromise

Applied AI roles HiddenLayer typically hires

HiddenLayer careers page →hiddenlayer.com
Last verified: June 2026?Report an inaccuracy

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