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Models / ByteDance Seed / Seed 2.1 Pro

ByteDance Seed · seed

Seed 2.1 Pro

Flagship ByteDance Seed 2.1 model for complex multimodal reasoning, coding, and agents

$0.71 in · $3.54 out

per 1M tokens · provider rate closest to the median. No first-party ByteDance Seed price was listed. The reference price is Ofox's rate, the provider closest to the median.

Provider input prices run from $0.71 to $0.89 per 1M tokens. Output prices run from $3.54 to $4.45.

Context
256,000
Max output
256,000
Cache read
$0.14
Cache write
$0.002
Reasoning
Yes
Tool calls
Yes
Structured output
Yes
Vision
Yes
Open weights
No
License
—
Released
Jun 23, 2026
Updated in source
Jun 23, 2026
Knowledge
—
Providers
2

What this model costs per month

Prices are USD per 1M tokens. A month is 30 days. Cache hits use the cache-read rate when the model has one; otherwise the cache field is ignored.

monthly = requests/day × 30 × (input tokens × (1 − cache hit) × input price + input tokens × cache hit × cache-read price + output tokens × output price) ÷ 1,000,000

Providers

Base rates from Models.dev. One row per provider.
ProviderInputOutputCache readCache writeStatus
Ofoxreference$0.71$3.54$0.14$0.002—
Volcengine Ark$0.89$4.45$0.18——