---
id: "2026-08-05-bytedance-seedrealtime"
url: "https://postcutoff.com/e/2026-08-05-bytedance-seedrealtime/"
as_of: "2026-11-13T13:49:00+01:00"
date: "2026-08-05"
date_precision: day
category: model-release
importance: 3
confidence: high
status: [Confirmed]
sources: 4
editor: human editor
human_review: null
version: "2026-10-04"
---

As of: 2026-11-13 13:49 CET.
Researched and written by AI agents (Claude Opus 5.5 in Claude Code), with a human editor. How we work: https://postcutoff.com/about/
Canonical page: https://postcutoff.com/e/2026-08-05-bytedance-seedrealtime/

# ByteDance deploys SeedRealtime, a native audio-visual full-duplex model, in the Doubao app

ByteDance Seed launched SeedRealtime, an end-to-end LLM that listens, watches (live video) and speaks at the same time instead of chaining ASR, vision and TTS, and rolled it out at scale in Doubao (Dola internationally). ByteDance says it halves conversational pacing problems compared with cascaded systems.

## Key facts
- Announced 2026-08-05 by ByteDance Seed
- Single model over continuous audio, video and text streams; full-duplex with proactive interaction
- Uses visual context to resolve homophones and references to what the camera sees
- Available in Doubao/Dola and BytePlus Playground; no public API id or pricing announced
- Two weeks after Seed Audio 1.0 (2026-07-20), a one-pass speech+SFX+ambience model

## What happened

ByteDance's Seed team shipped an audio-visual full-duplex model to Doubao, China's largest consumer chatbot, letting users
hold natural video-call-style conversations with the assistant (demos include menu translation, museum guiding and
walking through an espresso machine).

## Why it matters

It puts end-to-end "see, hear and talk at once" interaction in front of a mass consumer audience. ByteDance published only
human-evaluation claims, no quantitative benchmarks.

## Your AI and this story

- GPT-6 Astra (training cutoff April 2026): 97 days after its cutoff
- Claude Opus 5.5 (training cutoff June 2026): 36 days after its cutoff
- Gemini 4 Hydrogen (training cutoff March 2026): 127 days after its cutoff
- Grok 4.7 (training cutoff May 2026): 66 days after its cutoff

## Sources

1. [ByteDance Seed - SeedRealtime released](https://seed.bytedance.com/en/blog/seedrealtime-audio-visual-full-duplex-llm-released-toward-omni-modal-natural-interaction) (seed.bytedance.com, official)
2. [ByteDance Seed - SeedRealtime page](https://seed.bytedance.com/en/SeedRealtime) (seed.bytedance.com, official)
3. [ByteDance Seed - Seed Audio 1.0](https://seed.bytedance.com/en/blog/from-speech-to-audio-creation-introducing-the-seed-audio-1-0-audio-creation-model) (seed.bytedance.com, official)
4. [TechNode - ByteDance launches SeedRealtime](https://technode.com/2026/08/05/bytedance-launches-seedrealtime-full-duplex-audio-video-model/) (technode.com, press)

## Changes

- 2026-09-29 (filed): Created

## Related

- 2026-09-23: [Alibaba launches Qwen-Audio-3.1 five-model voice stack and cuts audio API prices up to 95%](https://postcutoff.com/e/2026-09-23-qwen-audio-3-1/index.md)
- 2026-09-15: [StepFun releases StepAudio 3 family](https://postcutoff.com/e/2026-09-15-stepfun-stepaudio-3/index.md)
- Models: [SeedRealtime (Doubao realtime audio-visual model)](https://postcutoff.com/m/seedrealtime/) (`seedrealtime`)