Cinder Technologies reaches $55M funding

Cinder Technologies has raised a $41 million Series B, bringing its total funding to $55 million, according to the company and funding databases that track the round. The New York startup announced the financing on May 12 and said Radical Ventures led the investment. Existing and new backers in the round included Accel, Y Combinator, M12, PSP Growth and Neuberger’s Outpost Ventures. The company was founded by Glen Wise and Philip Brennan and positions itself as infrastructure for trust and safety operations, rather than a pure data-labeling vendor. On its website, Cinder says its software helps high-growth companies design, automate and scale trust and safety work, while product materials describe tools for setting policy, routing cases and directing human reviewers and AI agents. (cinder.ai) ### Why does the funding headline matter? The $55 million total is the clearest number in the deal. CB Insights lists Cinder at $55 million raised across six rounds, with the latest round dated May 12, 2026. Crunchbase also identifies the latest financing as a Series B and names Radical Ventures as the lead investor. (crunchbase.com) AlleyWatch separately listed Cinder among New York’s larger recent startup financings, but its funding database page shows $41 million raised in one round in New York City. That suggests the June 2 roundup cited cumulative equity funding, while the company’s own announcement provides the specific size of the latest round. (cbinsights.com) ### What does Cinder actually sell? Cinder says it provides “mission-critical infrastructure” to protect companies from digital abuse and manipulation. In the Series B announcement, the company said its platform is used for content moderation, fraud detection, intellectual-property enforcement and case investigation. It also said OpenAI, Spotify and Black Forest Labs run on its software. (funding.alleywatch.com) The company’s product page describes a system of record for trust and safety teams, with workflows that can route work to people or AI agents and produce outputs for internal reviews or regulatory filings. That places Cinder in a part of the AI software stack focused on operating controls and enforcement, not model training alone. (cinder.ai) ### Why are investors backing this category now? Glen Wise said in Cinder’s funding announcement that generative AI has given bad actors more leverage and increased pressure on platforms to respond. The company framed the raise around demand for tools that can manage abuse, fraud and manipulation at scale. (cinder.ai) Radical Ventures described Cinder in its portfolio materials as infrastructure for trust and safety operations across real-time moderation, fraud detection and investigations. That investor framing aligns with a broader market push into AI governance, compliance and operational tooling. ### Was the original description of Cinder accurate? (cinder.ai) The founders and the broad funding claim were accurate, but the product description was too narrow. Glen Wise and Philip Brennan are listed as founders in company profiles, and total funding of $55 million matches CB Insights. But Cinder’s own materials emphasize trust and safety operations, abuse prevention and digital risk controls more than data collection and labeling. (radical.vc) That distinction matters because data-labeling startups usually sell annotation workflows for training models, while Cinder is presenting itself as operational infrastructure for companies managing harmful content, fraud and AI-enabled abuse. That is an inference from the company’s product and funding materials. (crunchbase.com) ### What comes next after the Series B? Cinder said the new funding will be used for product development, hiring and the opening of a San Francisco office. The company also said the next phase will focus on expanding tools for trust and safety teams as customers handle larger volumes of AI-related abuse cases. (cinder.ai)