Seed 1.6
Notable release: A meaningful new model: a new size or version, or a strong free-to-download model from a known lab.
Key facts
- Released
- Jun 11, 2025
- What it does
- Text and chat: Writes, answers questions and holds a conversation.Thinks first: Can reason step by step before it answers: slower, but better at maths, code and tricky questions.Sees images: Understands pictures, screenshots and charts you share with it.Watches video: Understands video clips you share with it.Makes video: Creates video clips from a description or a picture.
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- How
- For developers, through an API
- Size
- Parameters: The numbers a model learns during training: a rough measure of its size. Bigger usually means more capable, but slower and pricier to run. 7B means 7 billion.
- Announced as
- “ByteDance Unveils DouBao 1.6 and Seedance 1.0 with Significantly Reduced Costs”
From trckr's archive of releases before it started watching. Date and details from Epoch AI's database of AI models (CC BY 4.0).
Price and limits
What developers pay to use it through the API: How developers plug a model into their own apps and pay per use. A model that's "in the API" can be used by programmers, even if it isn't in a chat app yet., per million Tokens: The small chunks of text a model reads and writes, about three-quarters of a word each. Prices and limits are counted in tokens. sent (input) or written back (output), and how much it can take in at once.
- Input
- $0.25
- per million tokens
- Output
- $2.00
- per million tokens
- Context window: How much a model can keep in mind at once: your question, any files you share and its own replies. Measured in tokens; 1,000 tokens is about 750 words.
- 262K tokens
- about 200,000 words
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- Longest answer
- 33K tokens (about 25,000 words)
- Over 128K tokens
- $0.50 input, $4.00 output per million tokens
From OpenRouter, checked .
Compare Seed 1.6 with
It came out 31 days after Seed1.5-VL, the lab's previous model.
The details
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