Synthesia

Synthesia is the AI video platform for enterprise corporate training, internal communications, and L&D — and it's quietly become a real category leader. Fortune 500 companies use it to produce thousands of training videos per year without film crews, scripts that need updating every quarter, or the 'we recorded this in 2019 and the presenter has left the company' problem. Founded in 2017 by Victor Riparbelli, Steffen Tjerrild, Lourdes Agapito, and Matthias Niessner (UCL + Stanford + TUM AI researchers), Synthesia raised at a unicorn valuation in 2024 and is one of the most-cited examples of 'AI startup that built a real business.' Customers include BBC, BMW, Reuters, Heineken, Tinder, and basically every Fortune 500 you'd recognise. The core experience: you choose an AI avatar (140+ stock avatars representing diverse demographics + custom avatars of your own employees if you license them), paste a script, pick a language (140+ supported), and Synthesia generates a video of the avatar speaking your text with realistic lip sync and natural delivery. The output is intentionally 'corporate training' polished — clean backgrounds, professional attire, neutral delivery — which is exactly what Fortune 500 L&D wants. For founders the use cases are narrower than HeyGen but real: • Customer onboarding videos at scale (record once, generate updates with script changes) • Internal training and SOP videos • Multilingual product walkthroughs (140+ languages, same avatar) • Sales enablement content (demos, pitch training) • Knowledge base articles as videos The pricing reflects the enterprise focus. Starter at $30/month gives 10 minutes of video credits + 70+ avatars + 1 editor seat — the only realistic entry tier for evaluation. Creator at $80/month gives 30 min credits + 230+ avatars + 5 editors + brand kit. Enterprise is custom (typically $10K+/year). Compared to HeyGen's $24/month Creator tier this is more expensive — Synthesia targets enterprise budgets, not indie creators. Where Synthesia wins clearly: enterprise-grade compliance (SOC 2, ISO 27001, GDPR), avatar realism for corporate contexts (slightly more polished than HeyGen for stiff/formal settings), multilingual scale (140+ languages with proper lip sync), and integration with corporate LMS systems (Articulate, Litmos, Cornerstone). Where Synthesia loses: pricing, speed of feature iteration vs HeyGen, indie creator features (you can't quickly clone yourself from a phone video — Synthesia's custom avatars require a video shoot or higher tier). The enterprise focus is the feature and the limitation. My take: Synthesia for enterprise corporate use cases (training, L&D, internal comms at Fortune 500 scale). HeyGen for indie creators, faster iteration, and lower price points. They serve different audiences. For founders evaluating: try the free demo to see if avatar realism clears your bar, then pick based on use case fit and budget. Most indie founders should pick HeyGen; most enterprise L&D teams should pick Synthesia.