VC Explorer

Explore funding trends in the RAI space.


2025

53 rounds raised

$1,543m raised

2026

7 rounds raised -86.8%

$508m raised -67.1%


Investment Feed

Last updated: October 9, 2026 16:39:30

HiddenLayer

Raised $100.0M in Series B round
Delta-v Capital, Ten Eleven Ventures, Morgan Stanley, M12, Booz Allen Ventures

2026-09-02

Patronus AI

Raised $50.0M in Series B round
Greenfield Partners, Notable Capital, Lightspeed Venture Partners, Datadog, Samsung, Factorial Capital, Gokul Rajaram

June 2026

Gray Swan AI

Raised $40.0M in Series A round
Wing Venture Capital, Madrona, Obvious Ventures, Snowflake Ventures, Hudson River Trading, Samsung Next, Magarac Venture Partners

May 2026

Braintrust

Raised $80.0M in Series B round
ICONIQ Capital, Andreessen Horowitz, Greylock

February 2026

Goodfire

Raised $150.0M in Series B round
B Capital, Juniper Ventures, Menlo Ventures, Lightspeed Venture Partners, South Park Commons, Wing Venture Capital, DFJ Growth, Salesforce Ventures, Eric Schmidt

February 2026

Fiddler AI

Raised $30.0M in Series C round
RPS Ventures, Lightspeed Venture Partners, Lux Capital, Insight Partners, Capgemini Ventures, Dallas VC, Dentsu Ventures, Mozilla Ventures, LG Technology Ventures, Benhamou Global Ventures, LDV Partners

January 2026

RAI-Leveraged Firms

Firm Name # RAI Investments Investments
Y Combinator 8 Ambient AI, Pave, Armilla AI, Athina AI, Unbound Security, Humanly, Openlayer, Nuanced
Lightspeed Venture Partners 6 Snorkel AI, Fiddler AI, Virtuous AI, Virtue AI, Goodfire, Patronus AI
Factory 4 Virtuous AI, Guardrail Technologies, Virtue AI, Guardrails AI
Insight Partners 4 HoneyHive, Fiddler AI, OneTrust, Laminar
Samsung Next 4 Gray Swan AI, Fiddler AI, Bast AI, Bria
Andreessen Horowitz 3 Pave, Hippocratic AI, Braintrust
Bessemer Venture Partners 3 Giskard AI, Pave, AIMon Labs
Bloomberg Beta 3 Guardrails AI, Fiddler AI, Guardrail Technologies
Gaingels 3 ValidMind, Rhino Health, TomtA AI
Index Ventures 3 Pave, Arthur AI, BrightHire
Mozilla Ventures 3 Fiddler AI, Trail ML, Credo AI
Plug and Play 3 Datatron, Betterdata, Monitaur
500 Startups 2 Impress AI, Datatron
AI Fund 2 Credo AI, ValidMind
Alpha Square Group 2 Fiddler AI, Unbound Security
Alumni Ventures 2 Trustible, Humanly
Amarjit Gill 2 Virtuous AI, Virtue AI
Calibrate Ventures 2 ProRata AI, Howso
Capital One Ventures 2 HiddenLayer, Conjecture
Chingona Ventures 2 CertKOR AI, Optimal
Chris Re 2 Virtue AI, Virtuous AI
Datadog 2 Patronus AI, Arize AI
Eric Schmidt 2 Goodfire, Holistic AI
European Innovation Council (EIC) 2 QuantPi, Deeploy
European Union 2 Veil AI, Headai
Fin Capital 2 Liminal AI, Witness AI
Flybridge Capital Partners 2 Troj AI, BrightHire
Foundation Capital 2 Acuvity, Arize AI
Franklin Templeton 2 OneTrust, Betterdata