AI Security Heats Up: Pluto Security Exits Stealth With $42M and Opsin Raises $21M

Companies in this story: Pluto Security, Opsin, Jump Capital, TLV Partners, SYN Ventures, Race Capital

As employees build their own AI tools and agents, security teams are struggling to see what exists, what it can access and what it is doing. Two startups raised money in the same week to fix that.

Pluto Security: $42M to secure the AI workspace

Pluto Security emerged from stealth on October 13 with $42 million in total funding: a $34 million Series A led by Jump Capital and an $8.5 million seed round led by TLV Partners. The company says it already has more than $2 million in annual recurring revenue and over 40 enterprise customers.

Pluto focuses on the AI apps, automations and agents that employees build themselves, often outside formal IT processes, and works at the endpoint to find and control them.

Opsin: governing agents through platform APIs

Opsin reportedly raised $21 million, led by SYN Ventures and Race Capital, according to cybermerge. Opsin connects through APIs to enterprise AI platforms, including Microsoft 365 Copilot and Copilot Studio, Claude Enterprise, ChatGPT Enterprise and Gemini, and maps each agent's purpose, identity, data access and behaviour so it can flag risky changes.

Two different bets

	Pluto Security	Opsin
Control point	The endpoint, where employees build and run tools	Platform APIs of major AI suites
Strength	Catches tools that never touch an official platform	Deep view of agents inside sanctioned platforms
Funding	$42M total	$21M (reported)

The most likely outcome is that large organisations will need both kinds of visibility, which is why investors are backing multiple approaches at once.

Why AI security is heating up

• Shadow AI is everywhere. Teams adopt AI tools faster than security reviews can keep up.
• Agents act, not just answer. An agent with access to email, files or customer data can cause real damage if misconfigured.
• Regulation and audits are coming. Companies need to show who owns each agent and what it can do.

What it means for SaaS companies

If your product includes AI features or agents, security questionnaires will increasingly ask how they are governed. Publishing clear, specific information about permissions, data handling and audit logs shortens enterprise sales cycles and helps AI assistants describe your product accurately. Our AI visibility work includes making sure that information is easy to find and cite.

Funding details as reported in the coverage linked above. Opsin's round is based on a single report.