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Seed 1.6

ByteDance Seed · released December 2025

Seed 1.6 is a ByteDance Seed model with a 262K token context window — about 370 pages of text. It reads Images, Text, and Video and replies in Text. It can show its reasoning before it answers.

$0.287

input / 1M tokens

$2.30

output / 1M tokens

262K

context — about 370 pages

0.33¢

a client proposal

Pricing

Input
$0.287 per million tokens
Output
$2.30 per million tokens
Long-context rate (over 128K)
$0.575 in · $4.60 out, per million tokens

Billed from your Alyph wallet. Prices can change when the provider changes theirs — last checked August 9, 2026.

The numbers

Provider
ByteDance Seed
Released
December 2025 (2025-12-23)
Context window
262K tokens — about 370 pages
Max output
33K tokens per reply
Input
Images, Text, and Video
Output
Text
Reasoning
Shows its thinking before answering

Cost vs Token Amount

Drag the slider to adjust the split between input and output workload.

80% Input20% Output
free$0.69$1.380 tokens250k500k750k1000k
Seed 1.6

Adjust the ratio slider to change how output tokens influence the final price for equivalent workloads.

What a task costs

2K tokens in · 500 tokens out.

Seed 1.6

ByteDance Seed

0.17¢

for this task

33% input · 67% output

Full pricing →

Your $5 welcome credit covers about 2,898 of these.

Compare Seed 1.6

Closest in price on a typical task:

Seed 1.6 vs GPT-5 Mini →Seed 1.6 vs GPT-5.1-Codex-Mini →Seed 1.6 vs Seed-2.0-Lite →Seed 1.6 vs DeepSeek V4 Pro →Any other combination →

Questions, answered

How much does Seed 1.6 cost on Alyph?

Seed 1.6 costs $0.287 per million input tokens and $2.30 per million output tokens on Alyph. A typical task — 5K tokens in, 800 out — works out to about 0.33¢. Billed from your Alyph wallet, with hard spending limits. Prices can change when the provider changes theirs; this page was last checked on August 9, 2026.

What is Seed 1.6's context window?

262K tokens — about 370 pages. Replies can be up to 33K tokens long. Prompts longer than 128K tokens are billed at the long-context rate.

Can Seed 1.6 read images and files?

Seed 1.6 reads Images, Text, and Video. Drop a file onto the canvas and it becomes part of the context — the only limit is the context window.

Does Seed 1.6 show its reasoning?

Yes. Seed 1.6 can expose its thinking before the final answer, so you can watch how it got there.

Test Seed 1.6 against GPT-5 Mini

One prompt, both models at the same time, the better answer wins. Free to start, with $5 of credit.

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