What is the context length of Seed 1.6 Flash?

Seed 1.6 Flash has a 262,144 token context window.

What inputs and outputs does Seed 1.6 Flash support?

Seed 1.6 Flash accepts images, text, and video as input and returns text.

What other text models does ByteDance Seed have?

Seed 2.1 Turbo, Seed-2.0-Lite, and Seed-2.0-Mini are other text models from ByteDance Seed.

When was Seed 1.6 Flash released?

Seed 1.6 Flash was released on December 23, 2025.

ByteDance Seed: Seed 1.6 Flash

bytedance-seed/seed-1.6-flash

Seed 1.6 Flash is an ultra-fast multimodal deep thinking model by ByteDance Seed, supporting both text and visual understanding. It features a 256k context window and can generate outputs of up to 16k tokens.

Modalities

Context

262K

Released

Dec 23, 2025

Not currently available through EU in-region routing. In-region routing docs

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ByteDance Seed: Seed 1.6 Flash

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ByteDance Seed: Seed 1.6 Flash

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Frequently asked questions

What is Seed 1.6 Flash?

What is the context length of Seed 1.6 Flash?

What inputs and outputs does Seed 1.6 Flash support?

What other text models does ByteDance Seed have?

When was Seed 1.6 Flash released?

Explore more models

More models from bytedance-seed

More models from bytedance-seed