Modeldex
ByteDance

Seed 1.6

CTX256K
Reasoning · Tools
TextInput$0.12/M
TextOutput$1.19/M

ByteDance Seed model for long-context reasoning, instruction following, and tool-assisted tasks

PaidProprietary678/1044
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ByteDanceTextCommon

Seed 1.6

ByteDance Seed model for long-context reasoning, instruction following, and tool-assisted tasks

doubao-seed-1-6-251015
Type
Text
Quality
Not rated yet
Context window
256,000 tokens
Max output
64,000 tokens
Input price
$0.12 / 1M tokens
Output price
$1.19 / 1M tokens
Cache read
$0.024 / 1M tokens
Cache write
—
Released
Oct 15, 2025
Knowledge cutoff
—
Takes in
Text
Puts out
Text
Reasoning
Yes
Tool calling
Yes
Structured output
Yes
File attachments
No
Access
Paid
License
Proprietary
Rarity
Common
Set number
678/1044

Weights aren’t public. Use is governed by ByteDance’s terms. Specs from models.dev, last changed Oct 19, 2026. Official source: www.volcengine.com.

How good is it?

Public leaderboard scores for Seed 1.6, refreshed daily from Epoch AI and LMArena.

No public leaderboard lists Seed 1.6 yet. Epoch AI and LMArena cover most chat, image, and video models from the big labs; embeddings, speech, and small open models mostly go unrated.

Where to run it

7 providers sell Seed 1.6 through an API. Prices are per million tokens, cheapest first.

API providers

ProviderInputOutputContext
OfoxCheapest paidvolcengine/doubao-seed-1-6$0.12$0.29256K
Volcengine ArkOfficialdoubao-seed-1-6-251015$0.12$1.19256K
DevPass (LLM Gateway)seed-1-6-250915$0.25$2.00256K
Kilo Gatewaybytedance-seed/seed-1.6$0.25$2.00262K
LLM Gatewaybytedance/seed-1-6-250915$0.25$2.00256K
OpenRouterbytedance-seed/seed-1.6$0.25$2.00262K
Vercel AI Gatewaybytedance/seed-1.6$0.25$2.00256K

From models.dev and Hugging Face, checked daily. Resellers’ listings can lag behind their price pages, so confirm with the provider before you commit.

Face off

Current text models from other labs at a similar output price.

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