Tavus Review — The Conversational Video AI That Builds Machines That See, Hear, and Respond Like Humans in Real Time

Tavus emerged from YC in 2021 with a specific thesis: real-time, emotionally intelligent video AI is a category, not a feature. By 2026, they had backed it with Phoenix-4 (40fps emotional rendering), Raven-1 (sub-100ms multimodal perception), Sparrow-1 (conversational timing), and ~$58M in funding from Sequoia. This review covers the CVI architecture, the model stack, the pricing, the use cases, and where Tavus is ahead of — and behind — HeyGen and Synthesia.