ByteDance Launches SeedRealtime, a Native Full-Duplex Audio-Video Model on Doubao
字节跳动Seed · wechat · 2026-08-05
ByteDance's Seed team has officially released SeedRealtime, a native full-duplex audio-video large model. Using a unified end-to-end architecture that natively integrates audio, video, and text, it breaks through the high latency and information loss bottlenecks of traditional cascade systems, enabling real-time "see, hear, and speak" interactions.
Core capabilities include:
- Joint Audio-Video Understanding: Deeply fuses sound, visuals, and temporal information to resolve ambiguities and accurately understand context using visual cues.
- Proactive Interaction: Maintains continuous environmental awareness, proactively reminding or intervening when specific changes or targets appear in the video stream.
- Fluent Rhythm: Eliminates the need for external VAD rules. It naturally handles turn-taking, pauses, and interruptions while robustly filtering out background noise and irrelevant bystander chatter.
End-to-end human evaluations show a 50% reduction in conversational rhythm issues compared to cascade models. SeedRealtime is now fully rolled out in the Doubao App, accessible via the video call feature.
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