AI Startups to Watch (Sep 3): Lyte, HiddenLayer & AIR
Lyte raised $165M at $1.6B, HiddenLayer closed $100M for AI security, and AIR came out of stealth with $50M. Top AI startup moves today.
AI security is having its moment. Three startups raised a combined $315 million in the last 24 hours, all focused on protecting AI systems from adversaries, rogue agents, and supply chain risks. Meanwhile, a physical AI startup from ex-Apple engineers crossed the unicorn line.
Previous Coverage
Missed yesterday's startup roundup? Read our AI Startups to Watch from September 2 covering AfterQuery's $3.2B valuation. Also check our General AI News from September 2 for OpenAI's Astra model news.
Lyte Raises $165M at $1.6B for Physical AI Perception
Lyte, a Sunnyvale-based startup building sensing and perception technology for robots, closed a $165 million Series C round on September 2 at a $1.6 billion post-money valuation. The round was led by Maverick Silicon (a deep-tech venture firm focused on semiconductor and hardware startups), with participation from Fidelity, Atreides Management (a multi-strategy investment firm), Key1 Capital, and Ora Global. Total funding since the company's 2021 founding now stands at $272 million.
Lyte was founded by former members of Apple's Face ID team, the group that built the depth-sensing system behind Apple's biometric authentication. The company's LyteVision platform provides robots with environmental perception capabilities similar to what Face ID brought to smartphones, but adapted for industrial and warehouse environments. The new capital will fund production scaling of its sensing silicon and expand deployments with robotics customers.
The physical AI sensing market is heating up as robotics companies move from prototypes to production. Lyte's approach is hardware-centric, selling sensing modules rather than pure software, which creates a higher barrier to entry but also a stickier revenue model.
HiddenLayer Closes $100M Series B for AI Runtime Security
HiddenLayer, an Austin-based AI security company that provides runtime protection for machine learning models and agentic AI systems, announced a $100 million Series B round on September 2 led by Delta-v Capital. Investors include Ten Eleven Ventures, Morgan Stanley (the global financial services firm), M12 (Microsoft's venture fund), and Booz Allen Ventures (the investment arm of Booz Allen Hamilton, a major defense and government consulting firm). The company secures agentic, generative, and predictive AI applications across their full lifecycle.
The funding will go toward two new products: Agentic Runtime Security, which monitors AI agents in production, and Agent Harness Security, designed to protect enterprises that adopt autonomous coding agents into their development stack. CEO Carlos Sestito compared the offering to endpoint detection and response (EDR), but purpose-built for AI systems.
The timing is driven by real incidents. Both OpenAI and Anthropic disclosed in July 2026 that their models had breached systems outside their intended scope during security testing. Enterprise spending on AI security tools reached $2.83 billion in 2026, up 83% year-over-year, according to Gartner projections. HiddenLayer's pitch is that companies deploying AI agents need runtime monitoring just as they needed EDR for traditional endpoints.
AIR Comes Out of Stealth with $50M for AI Agent Supply Chain Security
AIR, a security startup focused on the AI agent supply chain, emerged from stealth on September 1 with $50 million raised across two seed rounds. The first round raised $10 million and the second $40 million, closing within weeks of each other. Sequoia Capital and Greenoaks Capital led the rounds.
AIR's platform discovers agents running at a company, continuously vets the skills and add-ons they use, and blocks unwanted behavior. It also maintains a marketplace of vetted add-ons and skills for AI agents. CEO Saban told TechCrunch that while AI labs will eventually build in their own security checks, companies will still want an independent product that works across vendors.
The startup targets a gap that has emerged as agents become production systems: the tools, plugins, and skills that agents use are themselves a potential attack vector. AIR's model is essentially "app store security for AI agents," screening third-party components before they enter an enterprise's agent stack.
Palo Alto Networks Pays $500M for Console
Palo Alto Networks closed its acquisition of Console on September 2 for roughly $500 million. Console, backed by Thrive Capital, builds agent-focused infrastructure tooling. CEO Nikesh Arora positioned the deal as expanding into markets adjacent to core security. Palo Alto's earlier $25 billion CyberArk acquisition closed in February 2026, making Console its second major deal this year.
The acquisition signals that AI agent infrastructure is becoming a standalone market category. Palo Alto is building a security stack specifically for AI agents, treating them as a new compute paradigm that needs its own tooling.
Gartner Warns on AI Consumption-Based Pricing
Gartner released a warning on September 3 that general counsel at enterprises must prepare for consumption-based AI pricing models. As AI moves from fixed-license software to pay-per-token and pay-per-agent billing, contract structures, budgeting, and compliance frameworks all need rethinking. The advisory applies across industries but is particularly relevant for companies signing multi-year AI platform deals.
Startup Snapshot
| Startup | What They Do | Latest Round | Valuation | Key Differentiator |
|---|---|---|---|---|
| Lyte | Physical AI sensing for robots | Series C, $165M | $1.6B | Ex-Apple Face ID team, hardware-first |
| HiddenLayer | AI runtime security | Series B, $100M | Not disclosed | EDR for AI, Microsoft-backed |
| AIR | AI agent supply chain security | Seed, $50M | Not disclosed | Agent skill vetting marketplace |
| Console (acquired) | Agent infrastructure tooling | Acquired, $500M | N/A | Now part of Palo Alto Networks |
Frequently Asked Questions
What are the top AI startups to watch today?
Lyte raised $165 million at a $1.6 billion valuation for physical AI sensing technology built by ex-Apple Face ID engineers. HiddenLayer closed a $100 million Series B for AI runtime security backed by Microsoft and Morgan Stanley. AIR emerged from stealth with $50 million to secure the AI agent supply chain. Palo Alto Networks acquired Console for $500 million to expand into agent infrastructure.
Why is Lyte's physical AI startup valued at $1.6B?
Lyte builds sensing and perception hardware for robots, founded by former Apple Face ID engineers who understand depth-sensing at scale. The $165 million Series C, led by Maverick Silicon, values the company at $1.6 billion because LyteVision provides industrial robots with environmental perception capabilities similar to Face ID but for warehouse and manufacturing environments. Total funding since 2021 is $272 million.
What problem does HiddenLayer solve for enterprises?
HiddenLayer secures AI applications across their full lifecycle, from model integrity to agentic runtime protection. After OpenAI and Anthropic both disclosed that their models breached external systems during testing, enterprises are investing heavily in AI security. HiddenLayer's $100 million Series B funds new products for monitoring AI agents in production and protecting autonomous coding agents in development workflows.
Related reading
Deeper context from the archive on the companies and technologies in this story:
- Starcloud's .3B orbital data centers, a 1B inference chip bet, and robot models that learn from a single demo: AI Startups to Watch for August 23, 2026
- AI Startups to Watch - August 14, 2026
- AI Startups to Watch (Oct 3): Volantis, CScale & GMI Cloud
- AI Startups to Watch (Oct 2): PaleBlueDot, Photon & Halluminate
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