C

Cinder

SaaS platform enabling real-time moderation

Overview

Cinder provides a SaaS platform for Trust and Safety teams to automate and scale content moderation and improve AI training. It generates real-time moderation decisions as accurately annotated data, simplifying model learning, and includes audit logs and usage analytics to track team activity and efficiency. The product is cloud-based, secure, and scalable, with case and investigation management to govern sensitive data. Its goal is to help online platforms counter harmful content around the clock by delivering governance-grade moderation and better AI training data.

YC Company

Work here?Claim your company

About Cinder

Simplify's Rating
Why Cinder is rated
B-
Rated B on Competitive Edge
Rated B on Growth Potential
Rated C on Differentiation

Industries

Data & AnalyticsEnterprise SoftwareCybersecurityAI & Machine Learning

Company Size

51-200

Company Stage

Series B

Total Funding

$55.1M

Headquarters

New York City, New York

Founded

2021

Get referred to Cinder

See people who can refer or advise you

Simplify Jobs

Simplify's take

What believers are saying

  • May 2026 Series B raised $41 million from Radical Ventures, Accel, Y Combinator.
  • June through August 2026 brought Synthesia, StopNCII, Wizz App, and IWF partnerships.
  • October 2026 product pages show five live agents and customer expansion across fraud and safety.

What critics are saying

  • OpenAI, Synthesia, and Wizz can pressure pricing and demand bespoke custom work.
  • Cinder’s privacy-heavy workflows face GDPR and data-residency scrutiny across Europe and enterprise procurement.
  • If Meta, Google, or OpenAI bundle comparable safety tooling, Cinder becomes expendable.

What makes Cinder unique

  • Cinder centralizes policies, cases, audits, and AI agents in one trust system.
  • It sells agentic safety for fraud, moderation, IP, and open-weight model governance.
  • Cinder targets regulated review workflows, not generic ticketing or point-solution moderation tools.

Help us improve and share your feedback! Did you find this helpful?

Funding

Total Funding

$55.1M

Meets

Industry Average

Funded Over

4 Rounds

Notable Investors:
Series B funding is typically for startups that have proven their business model and need more funding to expand rapidly—often by entering new markets or adding more products. Investors are usually venture capital firms that specialize in later-stage investments.
Series B Funding Comparison
Above Average

Industry standards

$35M
$41M
$45M
$65M
$100M

Benefits

  • Health Insurance
  • Dental Insurance
  • Vision Insurance
  • 401(k) Retirement Plan
  • 401(k) Company Match
  • Remote Work Options
  • Flexible Work Hours

Growth & Insights and Company News

6 month growth

3%

1 year growth

-5%

2 year growth

-3%
Wow Partners, Inc.
May 13th, 2026
Cinder raises $41M Series B to help platforms combat AI-powered threats with automated safety tools

Cinder, a trust and safety platform startup, has raised $41 million in Series B funding led by Radical Ventures, with participation from existing investors Accel and Y Combinator. The round brings total funding to over $60 million. Founded by former Meta employees Glen Wise and Phil Brennan, who previously built community threat intelligence platforms, Cinder provides tools for content moderation, case investigation and risk monitoring. The platform serves social media, AI labs, e-commerce and financial companies facing online safety challenges. The company is developing "agentic safety" capabilities, using AI agents to automate repetitive investigation and classification tasks. The funding will support AI agent development, customer support expansion and hiring. Competitors include Intrinsic and Spectrum Labs.

TechCrunch
Dec 8th, 2022
Cinder's content moderation software is custom-built for trust and safety teams

Cinder launches software for companies grappling with some of the internet’s most complex, dangerous challenges.

PR Newswire
Dec 8th, 2022
Cinder Emerges From Stealth With First Platform For Trust And Safety Operations

/PRNewswire/ -- Today Cinder officially launched the industry's first Trust and Safety operations platform to help organizations combat Internet abuse at scale....

Recently Posted Jobs

Sign up to get curated job recommendations

Cinder is Hiring for 8 Jobs on Simplify!

Find jobs on Simplify and start your career today

Don't see your dream role? Check out thousands of other roles on Simplify.Browse all jobs