cinder.ai

United States, United States

Cinder provides trust and safety operations for AI platforms to protect against abuse, fraud, and manipulation.

cinder.ai, based in United States, United States, has 5 investors on file, among them Accel, M12 and Radical Ventures. Its latest round on record is Series B, 13 May 2026, of 2 rounds. Its site was last checked 12 Nov 2026: site answers.

cinder.ai

Funding

2 rounds on record

Latest roundSeries B13 May 2026

Since that round6 monthsno later round on record

Time between rounds4 years 4 monthson average, over 2 rounds

Investors in its rounds54 with a VCinfo profile

May 2026Series BLed by Radical Ventures, with M12, Accel, Y Combinator and 1 other

Jan 2022SeedLed by Y Combinator

Round sizes and total raised are on Fundup AI, our sister product for funding data.

Investors

5 investors on file

Investor	Evidence	Type
Accel	Portfolio page	Venture capital
M12	Portfolio page	Corporate VC
Radical Ventures	Portfolio page	Venture capital
The Aligned Fund	Portfolio page	Venture capital
Y Combinator	Page + round	Accelerator

A company is shown only after its own site answers and carries its name. Sites are checked again on a schedule, because domains lapse and get bought. Round stages and dates come from Fundup AI; investor links come from portfolio pages and rounds; other facts name their source when you point at them. How we grade the data

At a glance

Latest round: Series B, 13 May 2026
Investors on file: 5
Founded: 2022
Employees: 11-50
Headquarters: United States, United States
Open roles: 10
Site: Answers
Last checked: 12 Nov 2026

Company data by Fundup AI.

Tech stack by StrataDB

cinder.ai runs on 15 tools StrataDB has found, including:

Amazon Web ServicesAshbyCloudflareDatabricksDjangoFigmaGoogle AdsGoogle Workspace

See the full stack, with sources, on StrataDB

Backed by the same investors

Companies sharing two or more investors with cinder.ai.

Outset3 shared

Agave2 shared

Aktoria Robotics2 shared

Aspect2 shared

AssemblyAI2 shared

Atrato2 shared

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GET /v1/companies/cinder.ai
GET /v1/companies/cinder.ai/investors
GET /v1/companies/cinder.ai/news

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VCinfo API

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  https://api.vcinfo.io/v1/companies/cinder.ai/investors

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GET /v1/companies/cinder.ai
GET /v1/companies/cinder.ai/news

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