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Seed 2.1 Turbo

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...

  • By price it is in the pricier half of the 347 text models GenMagic runs (204th cheapest).
  • It was listed on Aug 12, 2026.

Data last changed Nov 1, 2026 · tracked since Oct 29, 2026 · Every model change

Try Seed 2.1 Turbo in the studioBrowse all models

Try Seed 2.1 Turbo

Generate with Seed 2.1 Turbo right here. Verify your email to start with free credits.

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Specifications

Context window

262K tokens

Max output

236K tokens

Input price

$0.75 / 1M tokens

Output price

$3.75 / 1M tokens

Capabilities

Reasoning

Works through multi-step problems before answering, for harder tasks.

Vision input

Accepts images alongside text, so you can prompt with pictures and screenshots.

Tool use

Can call functions and tools, enabling agentic and structured workflows.

Structured output

Returns validated JSON that conforms to a schema you define.

Use Seed 2.1 Turbo through the API

The model id is bytedance-seed/seed-2-1-turbo. Requests bill your GenMagic balance at the price above, and each response reports what it cost.

curl
curl https://genmagic.co/api/v1/chat/completions \
  -H "Authorization: Bearer $GENMAGIC_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "bytedance-seed/seed-2-1-turbo",
    "messages": [{ "role": "user", "content": "Explain vector databases in two sentences." }]
  }'
Python (openai SDK)
from openai import OpenAI

client = OpenAI(base_url="https://genmagic.co/api/v1", api_key="YOUR_GENMAGIC_API_KEY")

resp = client.chat.completions.create(
    model="bytedance-seed/seed-2-1-turbo",
    messages=[{"role": "user", "content": "Explain vector databases in two sentences."}],
)
print(resp.choices[0].message.content)

From an AI agent, call generate_text with "model": "bytedance-seed/seed-2-1-turbo" on the GenMagic MCP server. Keys, limits and every endpoint are in the API documentation.

Use Seed 2.1 Turbo in n8n

  1. In n8n, open the nodes panel, search for GenMagic and install it (a verified community node), then add it to your workflow.
  2. Set Resource to Text and Operation to Generate.
  3. In Model Name or ID, pick ByteDance Seed: Seed 2.1 Turbo, or enter bytedance-seed/seed-2-1-turbo as an expression.
  4. Connect your GenMagic API key (get one free). Each run is billed at the price above, and the node returns what it cost.

Ready-to-import workflows that already use the node are on GenMagic for n8n.

Similar-priced text models from other providers

Other text models GenMagic runs at a comparable price, on the same balance and API key.

ModelProviderPriceContext
ByteDance Seed: Seed 2.1 Turbo (this model)ByteDance$0.75 in / $3.75 out per 1M tokens262K
NVIDIA: Nemotron 3 UltraNVIDIA$0.90 in / $3.60 out per 1M tokens262K
SpaceXAI: Grok Build 0.1xAI$1.50 in / $3.00 out per 1M tokens256K
MoonshotAI: Kimi K2 ThinkingMoonshot AI$0.90 in / $3.75 out per 1M tokens262K
DeepSeek: DeepSeek V4 Pro 0423DeepSeek$1.43 in / $2.87 out per 1M tokens1M
Qwen: Qwen3.5-27BQwen$0.39 in / $3.90 out per 1M tokens262K

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Price and listing history

Every change GenMagic has recorded for Seed 2.1 Turbo since it began tracking the model on Oct 29, 2026. Prices are GenMagic's, the same the studio and the API charge.

DateChangeBeforeAfter
Nov 1, 2026Price up 36%$0.55 in / $2.75 out per 1M tokens$0.75 in / $3.75 out per 1M tokens

Where these figures come from

  • Price: GenMagic's own price, what the studio and the API charge, recomputed from the provider's price list every few minutes and recorded daily. How pricing works.
  • Specs and description: as ByteDance publishes them, checked daily.
  • Changes: the data on this page last changed on Nov 1, 2026, tracked since Oct 29, 2026. Every model's new listings, price changes and retirements are in the model changes log, and how every figure on GenMagic is sourced is on our sources page.

Generate with Seed 2.1 Turbo today

One GenMagic plan unlocks Seed 2.1 Turbo and every other model across text, image, audio, and video.

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