Model

Seed 2.1 Pro

Name: Seed 2.1 Pro
Brand: bytedance-seed

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

2 providers · 2 listingsreleased Jun 23, 2026closed weights

$0.707

lowest input /M · Ofox

$3.54

lowest output /M · Ofox

256K

context window

256K

max output

Compare providers (sorted by listed input price)

2 providers list Seed 2.1 Pro. The cheapest full-context option is Ofox at $0.707/$3.54 per M — 22% below Volcengine Ark's own price.

			Cache read /M	Cache write /M		Capabilities	Status
Ofox volcengine/doubao-seed-2.1-pro	$0.707	$3.54	$0.142	$0.0020	256K	reasoningtoolsstructuredvision		Jun 23, 2026
Volcengine Ark doubao-seed-2-1-pro-260628	$0.891	$4.45	$0.178	—	256K	reasoningtoolsstructuredvision		Jun 23, 2026

Best price history

Daily lowest published price across live providers. A lower line is better for the buyer.

Best input /M: $0.707unchanged
Best output /M: $3.54unchanged
Provider coverage: 2; 1 at the start · 24 snapshots

Published best prices are unchanged.

24 daily snapshots collected from Aug 21, 2026 through Sep 14, 2026. A price chart will appear after the first real move.

Price badge

![Seed 2.1 Pro price](https://www.vaanalytics.in/badge/bytedance-seed/seed-2.1-pro.svg)

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Live SVG, regenerated on every hourly sync — paste it into a README to always show the current cheapest listed price. Updates when prices change; no build step needed on your side.

Recent changes

Changelog →

capabilityvia volcengine · Aug 28, 2026
- structured_output: — → true
capabilityvia ofox · Aug 28, 2026
- structured_output: — → true
new providervia volcengine · Aug 26, 2026

Prices are per million tokens (USD). “—” means the provider does not publicly list a price for this model. Data from models.dev; verify with the provider before purchasing.