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: September 13, 2026 21:05:55

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