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ByteDance · app-only

Seed Diffusion Preview

Seed Diffusion Preview is an app-only language model from ByteDance, released August 4, 2025.

We present Seed Diffusion Preview, a large-scale language model based on discrete-state diffusion, offering remarkably fast inference speed. Thanks to non-sequential, parallel generation, discrete diffusion models provide a notable speedup to mitigate the inherent latency of token-by-token decoding, as demonstrated …

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Lab
ByteDance
Released
August 4, 2025
Weights
app-only
Parameters
–
Context
–
Price / M tokens
–
Epoch ECI
not yet rated

Benchmark results

Epoch AI has not published results for Seed Diffusion Preview yet. New models are usually evaluated within days to weeks.

Links

Announcement

More from ByteDance

Cola2 · Doubao Seed 2.1 Turbo · Doubao Seed 2.1 Pro · Doubao Seed Evolving (Nov 2026) · Doubao Seed 2.0 Lite (Apr 2026) · Doubao-Seed-2.0 Pro · Doubao Seed 2.0 Code · Doubao Seed 2.0 Mini

Data updated Thu, 12 Nov 2026 09:42 UTC. Benchmarks, Capabilities Index and model announcements: Epoch AI, “Capabilities & benchmarking” and “Data on AI models” (CC BY 4.0); category scores are ModelTape's own fit on Epoch's results. Releases and prices: models.dev (MIT). Sizes and quantizations: Hugging Face. “Runs on” figures are estimates from model size, quantization and memory bandwidth (±30–50%).
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