seed familyActive

Seed 1.8

ByteDance Seed model for multimodal reasoning, long-context analysis, and agent workflows

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Context

256,000

Max output

64,000

Input / 1M

$0.12

Output / 1M

$1.19

Providers

01 Profile 02 Capabilities 03 Pricing 04 History 06 Related

01Profile

Profile

Released

2025-12-28

Last updated

2025-12-28

Knowledge cutoff

—

Weights

Closed

02Capabilities

Capabilities

Input

text · image

Output

text

Reasoning

Yes

Tool calling

Yes

Structured output

Yes

Attachments

Yes

Cache read

—

Cache write

—

03Pricing

Pricing across 1 providers

Per 1M tokens, USD. Sorted by input price. First-party row highlighted.

Provider	Provider model id	Input	Output	Cache read	Context
volcengine	doubao-seed-1-8-251228	$0.12	$1.19	$0.02	256,000

04History

Change history

3+ recent events since 2025-12-28

2026-08-26Addedvolcengineoffering→ new

2026-02-05Removedjiekouofferingremoved→ new

2026-01-30Addedjiekouoffering→ new

Seed 1.8

Profile

Capabilities

Pricing across 1 providers

Change history

Same family & alternatives