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Overview
Cinder provides a SaaS platform that helps Trust and Safety teams automate and scale content moderation and improve AI training with real-time moderation decisions that come as accurately annotated data. The platform runs in the cloud, stores labeled moderation data, supports case management, and includes audit logs and usage analytics to track how teams work and their efficiency. It differentiates itself by focusing on end-to-end safety workflows with built-in governance, security, scalability, and analytics tailored to sensitive online environments. Its goal is to help online platforms counter harmful content around the clock by automating moderation and strengthening AI with high-quality labeled data.
About Cinder
Industries
Data & Analytics
Enterprise Software
Cybersecurity
AI & Machine Learning
Company Size
11-50
Company Stage
Series B
Total Funding
$55.1M
Headquarters
New York City, New York
Founded
2021
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Simplify's Take
What believers are saying
- May 2026 raised $41 million from Radical Ventures, Accel, Y Combinator, and M12.
- Cinder targets AI-powered abuse, deepfakes, CSAM, and prompt abuse, all worsening in 2026.
- Synthesia’s June 2026 partnership validates demand for automated, human-reviewed safety workflows.
What critics are saying
- Intrinsic and Hive attack Cinder from workflow and multimodal moderation angles.
- Cinder’s 2026 customer set stays concentrated in platforms vulnerable to policy shifts.
- If major AI platforms build internal moderation stacks, Cinder’s category contracts fast.
What makes Cinder unique
- 2026 Series B funding backs Cinder’s trust-and-safety operations platform.
- Cinder serves OpenAI, Spotify, Depop, and Black Forest Labs.
- Synthesia adopted Cinder in June 2026 for second-pass AI video enforcement.
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Funding
Total Funding
$55.1M
Meets
Industry Average
Funded Over
4 Rounds
Accel
Y CombinatorIndustry standards
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
↓ -9%1 year growth
↓ -9%2 year growth
↓ -9%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.
Cinder launches software for companies grappling with some of the internet’s most complex, dangerous challenges.
/PRNewswire/ -- Today Cinder officially launched the industry's first Trust and Safety operations platform to help organizations combat Internet abuse at scale....
Cinder is Hiring for 6 Jobs on Simplify!
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About Cinder
Industries
Data & Analytics
Enterprise Software
Cybersecurity
AI & Machine Learning
Company Size
11-50
Company Stage
Series B
Total Funding
$55.1M
Headquarters
New York City, New York
Founded
2021
Cinder is Hiring for 6 Jobs on Simplify!
Find jobs on Simplify and start your career today