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Fundraising
Infisical

Infisical Raises $40M Series B for AI Agent Security Infrastructure

Infisical raised a $40 million Series B at a $600 million valuation, led by Elad Gil, to expand security infrastructure for AI agents.

SalesTools Research
Oct 27, 2026
2 min read•$40M
Fundraising
Rein Security

Rein Security Raises $25M Series A for AI Agent Runtime Security

Rein Security raised a $25 million Series A co-led by Glilot Capital and Sienna Venture Capital for its platform that secures enterprise AI agents at runtime.

SalesTools Research
Oct 8, 2026
2 min read•$25M
Fundraising
Obsidian Security

Obsidian Security Raises $85M Series D for AI Agent Security

Obsidian Security raised an $85 million Series D led by Crescent Cove Advisors at a $1.1 billion valuation to secure AI agents and data inside third-party applications.

SalesTools Research
Aug 4, 2026
2 min read•$85M
Fundraising
Straiker

Straiker Raises $64M Series A for Enterprise AI Agent Security

Straiker raised a $64 million Series A led by Marathon Management Partners, Citi Ventures, Illuminate Financial and Workday Ventures to secure enterprise AI agents.

SalesTools Research
Jun 29, 2026
2 min read•$64M
Fundraising
NeuralTrust

NeuralTrust Raises $20M Seed for AI Agent Security

NeuralTrust raised a $20 million seed round led by Alstin Capital to secure enterprise AI agents and expand across the European market.

SalesTools Research
Jun 17, 2026
2 min read•$20M
AI/ML
Anthropic

Anthropic raises $4B from Amazon in landmark AI safety deal

Amazon invests up to $4 billion in Anthropic, the AI safety startup behind Claude, marking one of the largest AI investments to date and reshaping the competitive landscape.

Sarah Chen
Sep 25, 2024
0 min read•$4B
AI/ML
Inflection AI

Inflection AI raises $1.3B at $4B valuation for Pi personal AI assistant

Inflection AI secured $1.3B led by Microsoft, Reid Hoffman, and Bill Gates at $4B valuation to build Pi—a kind, empathetic personal AI assistant. Microsoft later acquires most of the team in landmark AI talent deal.

Sarah Chen
Jun 29, 2023
0 min read•$1.3B
AI/ML
DevRev

DevRev raises $100M Series A at $1.15B valuation for AI-powered customer support

DevRev secures $100M Series A led by Khosla Ventures at $1.15B valuation, building AI agents that connect customer support with engineering to resolve issues faster and build better products.

Sarah Chen
Aug 21, 2024
0 min read•$100M
AI/ML
Harvey AI

Harvey AI raises $100M Series C at $1.5B valuation for legal AI assistant

Harvey AI secures $100M Series C led by Kleiner Perkins at $1.5B valuation, deploying AI-powered legal research and drafting tools at Allen & Overy, PwC, and 100+ law firms globally.

Sarah Chen
Dec 14, 2023
0 min read•$100M
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