Synthesia Partners with Cinder for Enhanced AI Video Moderation at Scale
Synthesia, an enterprise AI video platform, announced a partnership with Cinder to enhance its AI video moderation capabilities. This collaboration integrates Cinder's moderation infrastructure for scaled content review, aiming to strengthen trust and safety for Synthesia's users, especially those in regulated industries. The partnership will enable Synthesia's trust and safety team to build faster against new harm types and validate decisions with richer signals.
Key Takeaways
- Synthesia's automated moderation tooling reviewed over 11.5 million content pieces in 2025, removing 841,957 for policy violations.
- Automated moderation volume increased by 77% (from 6.56 million to 11.58 million items) between 2024 and 2025.
- Manual review volume decreased from 792,586 to 441,086 items, with manual removals falling from 138,692 to 70,272.
- Cinder acts as a second-pass agent on model decisions, gathering context and escalating only genuine judgment calls to human reviewers.
- Synthesia has earned ISO 27001, ISO 42001, and ISO 27701 certifications for its product controls.
Why It Matters
This partnership signals a maturation in AI video platform operations, emphasizing proactive content moderation as critical infrastructure for enterprise adoption. As AI-generated content scales, the ability to rapidly identify and mitigate new harm types will dictate platform usability and regulatory compliance, especially for clients in sensitive sectors like finance and healthcare. Industry players should observe how this integrated approach impacts content velocity and trust metrics to assess the viability of similar moderation frameworks in their own deployments.
Additional Context
The partnership between Synthesia and Cinder arrives as concerns over AI-generated abuse escalate. Cinder recently raised $41 million in Series B funding, led by Radical Ventures, with participation from Accel, Y Combinator, and Microsoft's M12 Ventures (per Cinder's blog, May 2024). This funding highlights investor confidence in specialized moderation infrastructure to combat growing AI threats. Beyond Synthesia, Cinder's blog also notes partnerships with platforms like Wizz App, a social discovery app, to power AI-driven content moderation at scale, integrating AI agents trained on specific content policies. A Next Web article (June 2026) covering the Synthesia-Cinder news emphasized Synthesia's historical commitment to pre-generation moderation, a stance it has held since 2017. The article also cited a recent RTBF (Belgian public broadcaster) investigation where Synthesia successfully blocked the creation of non-consensual deepfakes and other illicit content, while several rival platforms failed, underscoring the real-world impact of robust moderation in AI video. This context illustrates a rising industry imperative to build proactive and scalable content safety measures into AI-powered tools from inception.
Read full article at synthesia.io
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