Dense Transformer
Pro
The production-optimized variant of Seed 2.1, built for high-throughput enterprise agent tasks (released Jun 23, 2026).
HLE:54.6%
256K ctx
$0.50 / $2.50 /MTok
The ChallengersStrict ZDR Verified
ByteDance
Frontier reasoning, math, and code at scale.
Laboratory Overview
ByteDance's AI lab builds the Seed language series and the industry-standard Seedream image generation models, combining state-of-the-art vision synthesis with versatile text reasoning.
Core Research Focus:Frontier reasoningmathematicscode at scalecompetitive benchmarks.
Privacy & Zero Data Retention
Strict Zero Data Retention (ZDR): Requests are processed ephemerally in RAM. No user data, prompts, or completions are stored, indexed, or used for model training.
No user telemetry sent to ByteDance
ByteDance Foundation Models (7)
Available under ARMES unified subscription without separate API keys or billing agreements.
Tier:
Dense Transformer
Pro
ByteDance's dedicated coding model (released Feb 14, 2026 on Volcano Engine; Jul 30, 2026 on OpenRouter).
262K ctx
$0.50 / $3.00 /MTok
262K ctx
$0.25 / $2.00 /MTok
262K ctx
$0.10 / $0.40 /MTok
Diffusion Vision Synthesis
Pro
Seedream 5.0 Lite is an advanced image synthesis engine by ByteDance, offering high-fidelity photorealistic rendering and prompt adherence.
128K ctx
Specialized Modality
Diffusion Vision Synthesis
Pro
Seedream 5.0 Pro is an advanced image synthesis engine by ByteDance, offering high-fidelity photorealistic rendering and prompt adherence.
128K ctx
Specialized Modality
Diffusion Vision Synthesis
Pro
Seedream 4.5 is an advanced image synthesis engine by ByteDance, offering high-fidelity photorealistic rendering and prompt adherence.
128K ctx
Specialized Modality
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