Seed 1.8
doubao-seed-1-8
ByteDance Seed model for multimodal reasoning, long-context analysis, and agent workflows
Specification
most-agreed values
Context
256K
Max output
64K
Released
2025-12-28
Knowledge cutoff
2025-01-01
Retires
—
Open weights
no
Input
text, image
Output
text
Price
US dollars per million tokens · most-agreed
Input
$0.12
Output
$0.29
Cache read
$0.023
Cache write
$0.0024
Available from 2 hosts
| Host | In $/M | Out $/M | Cache rd | Cache wr | Context | Output | Retires |
|---|---|---|---|---|---|---|---|
| zenmux · volcengine | $0.11 | $0.28 | $0.02 | $0.0024 | 256K | 64K | — |
| ofox · volcengine | $0.12 | $0.29 | $0.023 | — | 256K | 64K | — |
Other listings of this model
this page is one of them
The corpus files Seed 1.8 under several keys. This page is the doubao-seed-1-8 listing. The full record — every host, every price and every benchmark score — is on the main Seed 1.8 page.