seed-1.8

An all-in-one integration of search, coding, and GUI Agent capabilities.

Context
256K
Input price
$0.25/1M tokens
Output price
$2/1M tokens

Capabilities

Reasoning & Interaction
Reasoning
Tool Calling
Infrastructure
Streaming

Details

Model IDbytedance/seed-1.8
Provider Vercel AI Gateway
Creator ByteDance Seed
Family—
License—
Statusactive
Typechat
Input modalitiestext
Output modalitiestext
Open weight—
Parameters—
Architecture—
Context window256K tokens
Max input—
Max output—
Reasoning tokens—
Knowledge cutoff—
Release date—
Sourceofficial

Tools

Function Callingfunction_calling
Call external functions and APIs

Pricing

Input
$0.25
Output
$2
Cache write
—
Cache read
—
Batch in
—
Batch out
—

API

GET/v1/models/vercel/bytedance/seed-1.8

seed-1.8

bytedance/seed-1.8

An all-in-one integration of search, coding, and GUI Agent capabilities.

Changes · 4 entries
bytedance/seed-1.8updateca7a400Nov 2, 2026, 03:02 AM
capabilitiestool callyes
tools["function_calling"]
bytedance/seed-1.8update88d97e5Jun 30, 2026, 04:49 AM
tools["function_calling"]
bytedance/seed-1.8updateb301ebeMar 23, 2026, 11:47 PM
model_typechat
modalitiesinput["text"]output["text"]
bytedance/seed-1.8create7f5c66fMar 21, 2026, 05:16 AM