ByteDance Seed 2.1 Turbo

Name: ByteDance Seed 2.1 Turbo
Brand: bytedance-seed
SKU: bytedance-seed/seed-2-1-turbo

bytedance-seed·bytedance-seed/seed-2-1-turbo·GA·Closed·seed series·NEW

ByteDance Seed 2.1 Turbo is a multimodal model for coding and long-horizon agent workflows, including end-to-end software delivery and multi-step task execution. It supports text, image, and video input with a 262k context window.

At a glance

Reference price$0.50 / $2.50 per 1M

Cache read $0.25 · NanoGPT

Lowest paid$0.50 / $2.50

NanoGPT Gateway

Context262,144

Output limit262,144

Capabilities

✓ Reasoning✓ Tool use✓ Structured output? Temperature✓ Attachments

Modalities

TextImageVideo

Knowledge cutoff—

Released / updated2026-08-12 / 2026-08-12

Quality & performance

Artificial Analysis doesn't cover this model (267 of 2059 have data). Quality data comes from independent evals covering widely used models.

Available at 1 providers1 with public prices

Priced only

Provider	Tier	Input	Output	Cache read	Cache write	Context	Output limit	Status
NanoGPT	Gateway	$0.50	$2.50	$0.25	—	262,144	262,144

Sorted by blended price (input×0.75 + output×0.25) asc. The official channel always shows regardless of rank. Whether a gateway's low price is actually usable can't be verified.

Your usage cost

Input tokens / month

Output tokens / month

Cache hit rate

Common scenarios

1NanoGPT$195.00

The cheapest paid channel is the only channel.

Benchmark

No upstream benchmark data for this model. For quality, see the Artificial Analysis intelligence score above.

Reasoning control

Upstream provides no control info

1 / 1 providers expose no reasoning control (reasoning_options: []).

Price historyone sample accumulated per data sync

Input list $0.50Output list $2.50Min blended $1.00

Price history accumulates from each data sync; currently only 1 sample(s) (2026-08-13). Each future sync adds a point, and once accumulated a line is drawn here.