seed-2-1-turbo
Seed 2.1 Turbo is a multimodal model from ByteDance Seed for coding and long-horizon agent workflows, suited for end-to-end software delivery, multi-step task execution and understanding visual content.
Precio: Entrada: 120 créditos / 1 M de tokens (≈ $0.60); salida: 600 créditos / 1 M de tokens (≈ $3.00).
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Seed 2.1 Turbo API on ModelFold
Seed 2.1 Turbo is a multimodal model from ByteDance Seed for coding and long-horizon agent workflows, suited for end-to-end software delivery, multi-step task execution and understanding visual content. Try Seed 2.1 Turbo in the ModelFold Playground, then call it from your own code through an OpenAI-compatible chat completions API.
What Is the Seed 2.1 Turbo API
Seed 2.1 Turbo at a glance
Seed 2.1 Turbo is a chat model from ByteDance. It accepts text, images and video as input and returns text, with a context window of up to 262K tokens.
Use it without hosting anything
On ModelFold you call Seed 2.1 Turbo with a single API key — no model weights to download and no inference servers to run. The same key also works for the other chat, image, video and audio models on ModelFold.
Core Capabilities of Seed 2.1 Turbo
Up to 262K tokens of context
Keep long conversations, large documents and sizeable code in a single request, so the model can reason over the full material instead of fragments.
Understands images and video
Besides text, Seed 2.1 Turbo accepts images and video as input, so a single request can combine instructions with visual or other media.
Function calling
Seed 2.1 Turbo supports tool (function) calling: describe your functions in the request and the model returns structured calls your code can run — the basis for agents and integrations.
Reasoning mode
Seed 2.1 Turbo can produce reasoning before its final answer; in the Playground you can switch reasoning on or off to compare results.
Structured outputs
Ask for JSON that follows a schema (response_format), which makes extraction, classification and system integrations more reliable.
How to Use Seed 2.1 Turbo on ModelFold
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Step 1: Try it in the Playground
Open the Playground at the top of this page, type a prompt and see how Seed 2.1 Turbo responds before writing any code.
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Step 2: Create an API key
Sign in to ModelFold and create an API key in the console. Keep it secret and send it as a Bearer token.
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Step 3: Send a request
Call POST https://modelfold.ai/v1/chat/completions with "model": "seed-2-1-turbo" and your messages. Existing OpenAI-compatible SDKs work by changing the base URL and key.
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Step 4: Ship and monitor
Integrate the response into your product and check token usage and spend for every call in the console logs.
What You Can Build with Seed 2.1 Turbo
AI coding assistants
Generate, explain, debug and refactor code, review pull requests and work through multi-file changes in developer tools and IDE plugins.
Autonomous agents
Build agents that plan multi-step tasks, call your tools and APIs, and keep working toward a goal across long sessions.
Screenshot and image understanding
Read screenshots, charts, diagrams and photos alongside text — for UI review, visual QA or turning images into structured data.
Audio and video analysis
Summarize recordings, meetings and video clips, extract key points and answer questions about their content.
Frequently Asked Questions
What is Seed 2.1 Turbo?⌄
Seed 2.1 Turbo is a multimodal model from ByteDance Seed for coding and long-horizon agent workflows, suited for end-to-end software delivery, multi-step task execution and understanding visual content.
Which inputs does Seed 2.1 Turbo support?⌄
Seed 2.1 Turbo accepts text, images and video and returns text. Through ModelFold you can send text and images (OpenAI-style image_url content); in the Playground you can also attach documents, which are converted to text.
How long is the context window of Seed 2.1 Turbo?⌄
Up to 262K tokens, shared between your input and the model’s output.
Does Seed 2.1 Turbo support function calling?⌄
Yes. Seed 2.1 Turbo supports tools / function calling through the standard tools parameter of the chat completions API.
How is Seed 2.1 Turbo billed on ModelFold?⌄
Pay as you go by tokens: input and output tokens are charged at the per-million-token prices shown on this page. There is no monthly fee, and failed requests are not charged.
How do I call Seed 2.1 Turbo through the API?⌄
Send a POST request to https://modelfold.ai/v1/chat/completions with "model": "seed-2-1-turbo", using your ModelFold API key as the Bearer token.
| Entrada | 120 créditos 1M tokens≈ $0.60 |
| Salida | 600 créditos 1M tokens≈ $3.00 |
Se cobra por token, con tarifas separadas para entrada y salida. Los tokens de razonamiento cuentan como salida. El entorno de pruebas aplica exactamente el mismo cálculo.
Leer la documentación de la API →AI Agents · Claude Code / Cursor / Trae →curl https://modelfold.ai/v1/chat/completions \
-H "Authorization: Bearer $MODELFOLD_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"seed-2-1-turbo","messages":[{"role":"user","content":"Hello"}]}'