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 11, 2026 10:59:45

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