VC Explorer

Explore funding trends in the RAI space.


2025

53 rounds raised

$1,543m raised

2026

6 rounds raised -88.7%

$408m raised -73.6%


Investment Feed

Last updated: August 14, 2026 22:23:12

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

Witness AI

Raised $58.0M in Strategic round
Sound Ventures, Fin Capital, Qualcomm Ventures, Samsung Ventures, Forgepoint Capital Partners

January 2026

RAI-Leveraged Firms

Firm Name # RAI Investments Investments
Y Combinator 8 Humanly, Armilla AI, Nuanced, Ambient AI, Unbound Security, Pave, Openlayer, Athina AI
Lightspeed Venture Partners 6 Goodfire, Fiddler AI, Patronus AI, Virtue AI, Virtuous AI, Snorkel AI
Factory 4 Guardrail Technologies, Virtuous AI, Guardrails AI, Virtue AI
Insight Partners 4 Fiddler AI, HoneyHive, OneTrust, Laminar
Samsung Next 4 Fiddler AI, Bria, Gray Swan AI, Bast AI
Andreessen Horowitz 3 Hippocratic AI, Braintrust, Pave
Bessemer Venture Partners 3 AIMon Labs, Giskard AI, Pave
Bloomberg Beta 3 Guardrails AI, Guardrail Technologies, Fiddler AI
Gaingels 3 TomtA AI, ValidMind, Rhino Health
Index Ventures 3 BrightHire, Arthur AI, Pave
Mozilla Ventures 3 Fiddler AI, Trail ML, Credo AI
Plug and Play 3 Datatron, Betterdata, Monitaur
500 Startups 2 Datatron, Impress AI
AI Fund 2 Credo AI, ValidMind
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 Conjecture, HiddenLayer
Chingona Ventures 2 Optimal, CertKOR AI
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 Headai, Veil AI
Fin Capital 2 Liminal AI, Witness AI
Flybridge Capital Partners 2 Troj AI, BrightHire
Foundation Capital 2 Arize AI, Acuvity
Franklin Templeton 2 Betterdata, OneTrust