Seed 1.6
VerifiedSeed 1.6 processes image, text, and video with a 262k-token context.
About Seed 1.6
Seed 1.6 integrates vision and language capabilities into a single architecture. Its 262144-token context window supports extended sequences across multiple modalities. The design emphasizes unified processing of visual and textual data streams.
The model excels at tasks requiring simultaneous analysis of images, video clips, and lengthy text. Closed weights limit direct modification while enabling consistent API-based deployment. Typical applications include video summarization and cross-modal retrieval.
Users apply Seed 1.6 to workflows that combine visual content with detailed textual context. Its multimodal scope reduces the need for separate specialized models. Integration occurs through Bytedance-seed's hosted inference services.
Capabilities
How Seed 1.6 compares
Seed 1.6 (striped bar) vs other multimodal on intelligence, speed and price.
Price
USD per 1M output tokens · Lower is better · Seed 1.6 ranks #26 of 63
Nova 2 LiteSources: Artificial Analysis (intelligence, speed) · OpenRouter (price).
Best for
Extended document analysis
The model processes up to 262144 tokens to perform long-context reasoning over large reports, research papers, or legal texts while maintaining coherence across sections.
Video content evaluation
It performs video analysis by integrating visual frames with accompanying text or audio transcripts for tasks such as event detection and summarization.
Cross-modal content creation
Seed 1.6 supports image-text integration and cross-modal generation to produce unified outputs that combine visual and textual elements from diverse inputs.
Strengths & limitations
Strengths
- +Very large context window
- +Native support for video inputs
- +Unified image and text handling
Limitations
- –No audio modality
- –High compute needs at full context length
- –Performance depends on input quality
Cost calculator
Estimate what Seed 1.6 would cost for your usage.
Based on Seed 1.6's $0.25/1M input · $2.00/1M output. Estimate only — actual cost varies by provider and caching.
Quick start
OpenRouter's API is OpenAI-compatible — most SDKs work by just swapping the base URL. Only the model slug changes between models.
import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://openrouter.ai/api/v1",
apiKey: process.env.OPENROUTER_API_KEY,
});
const completion = await client.chat.completions.create({
model: "bytedance-seed/seed-1.6",
messages: [{ role: "user", content: "Hello!" }],
});
console.log(completion.choices[0].message.content);Model slug: bytedance-seed/seed-1.6
Editor's verdict
Seed 1.6 is Bytedance-seed's proprietary multimodal with a 262K-token context window.
At $2.00 per 1M output tokens, it is mid-priced for its class.
It is available through Bytedance-seed's API and aggregators like OpenRouter.
Best suited to very large context window and native support for video inputs.
Frequently asked questions
The model provides a context window of 262144 tokens, enabling extended document processing and long-context reasoning.
User reviews
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