Discover the ByteDance Seed: Seed 1.6 Flash Model

This model offers advanced multimodal understanding for diverse applications.

Input: image · text · video Output: text Context: 262,144 tokens Release: 2025-12-23

Introducing the ByteDance Seed: Seed 1.6 Flash, released on December 23, 2025. This innovative model excels in multimodal deep thinking, adeptly processing both text and images. With a remarkable 256k context window, it can handle extensive information and generate outputs of up to 16k tokens. The model supports various input modalities, including image, text, and video, and produces text outputs. Its advanced capabilities make it suitable for diverse applications, from content creation to complex reasoning tasks. Experience the future of AI with this powerful tool from ByteDance Seed.

Use Cases

Here are a few ways teams apply ByteDance Seed: Seed 1.6 Flash in practice—from fast drafting to multimodal understanding. Adapt these ideas to your workflow.

Create rich content from images and text

Conduct complex reasoning tasks

Analyze multimedia data effectively

Generate detailed reports from diverse inputs

Key Features

A quick look at the capabilities that make this model useful in real projects.

Ultra-fast multimodal deep thinking

256k context window for extensive information

Supports image, text, and video inputs

Generates text outputs up to 16k tokens

Customizable parameters for tailored responses

Specs

Overview

Vendor
bytedance-seed

Model ID
bytedance-seed/seed-1.6-flash

Release
2025-12-23

Modalities & context

Input
image · text · video

Output
text

Context
262,144 tokens

Parameters & defaults

Supported parameters: frequency_penalty, include_reasoning, max_tokens, reasoning, response_format, structured_outputs, temperature, tool_choice, tools, top_p

Defaults: temperature 0.2, top_p 0.95

Benchmark tests: ByteDance Seed: Seed 1.6 Flash

We ran this model against a few representative prompts to show its range. Review the outputs below and be the judge.

Text

Prompt:

Write 150 words on how AI might positively upend work, leisure and creativity

AI is poised to positively upend work, leisure, and creativity by amplifying human potential rather than replacing it. In work, it automates repetitive tasks—data entry, scheduling, basic analysis—freeing professionals to focus on strategic thinking, empathy, and innovation. AI-driven learning platforms personalize upskilling, ensuring workers adapt to new industries, fostering resilience. In leisure, AI curates tailored experiences: a music app suggesting obscure genres, a travel tool crafting off-the-beaten-path itineraries, or a virtual companion learning preferences for shared moments. This reduces decision fatigue, making downtime intentional and fulfilling. For creativity, AI collaborates, generating ideas, refining drafts, or composing music/visual art. It unlocks new forms—AI-augmented poetry blending human emotion with algorithmic patterns, or interactive installations responding to audience input. Lowering creation barriers democratizes expression, inviting non-experts to contribute. Ultimately, AI doesn’t just change work, relax, or create—it redefines possibility, turning human ingenuity into a superpower. (150 words)

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up.end

/ˌəpˈend/

verb

To “upend” means to completely disrupt, overturn, or drastically change the established order or structure of something. It implies a significant shift or alteration that can potentially have far-reaching consequences. When something is upended, it is turned upside down or transformed in a way that challenges conventional norms or expectations. The term often carries a sense of innovation, transformation, and sometimes even a hint of upheaval, indicating that the changes are not just minor adjustments but rather a fundamental reimagining of the status quo.

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