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ByteDance Seed: Seed 2.1 Turbo

bytedance-seed/seed-2-1-turbo

ByteDance Seed: Seed 2.1 Turbo is a 262,144-token model served on Composite at $0.160 per million tokens in and $2.50 per million tokens out.

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Specifications

Specifications and pricing as served by Composite
Model IDbytedance-seed/seed-2-1-turbo
Providercv11
Context window262,144 tokens
Acceptstext, image, video
Returnstext
Input price$0.160 per million tokens
Output price$2.50 per million tokens
Prompt cachingNot offered for this model
ModeratedNo
Cost on a monthly plan7 requests of the daily allowance per call
Plans that may spend on itBasic, Plus, Pro, Ultra, Enterprise
Routing endpoints2 (base plus 1 routing variant)

Measured on Composite

This model has not carried enough traffic on Composite yet to publish a success rate, a latency figure or a traffic rank. The numbers appear here once it has.

Routing variants

The same model behind 1 alternative endpoint. Call the id directly to pin a route; the base id above picks for you.

RouteModel IDProviderPrice
cheapThink bytedance-seed/seed-2-1-turbo:cheapThink cv11 $0.160 per million tokens input · $2.50 per million tokens output

Pricing

$0.160 per million tokens input · $2.50 per million tokens output

Input and output are charged at the provider’s list price.

On a monthly plan, one call costs 7 requests of that day's allowance. That needs the Basic or Plus or Pro or Ultra or Enterprise plan; credits pay for it on any plan.

Provider

cv11

Roleplay fit

This model is available on Composite alongside dozens of others from other labs, so it is easy to compare against similar options.

Context behavior

With a 262,144-token context window, it can hold a long-running roleplay or a full lorebook in memory without losing earlier plot details, so it suits multi-session campaigns and character cards with heavy backstory.

Cost for regular use

It is priced low enough for high-volume daily roleplay without the per-message cost adding up quickly.

From the provider

Seed 2.1 Turbo is a multimodal model from ByteDance Seed for coding and long-horizon agent workflows. It is suited for end-to-end software delivery, multi-step task execution, and understanding visual and...

Supplied by cv11, not written by Composite.