# Seed 2.0 Code Preview (260328)

> ByteDance Seed's model optimized for agentic coding, frontend development and multilingual programming tasks.

## Key facts

- Model author: ByteDance
- Input: $0.50 per 1M tokens (starting tier)
- Output: $3.00 per 1M tokens (starting tier)
- Cached input: $0.10 per 1M tokens
- Context window: 256,000 tokens
- Maximum output: 128,000 tokens
- Input modalities: image, text
- Output modalities: text
- Capabilities: reasoning, tools, vision
- Released: 2026-03-28
- Model IDs: `byteplus/seed-2-0-code-preview-260328`
- Model page: https://www.realrelay.ai/model/bytedance/seed-2-0-code-preview-260328

## Overview

Seed 2.0 Code Preview (260328) is a model from the ByteDance Seed team optimized for agentic coding. BytePlus describes it as suited to frontend development, multilingual programming tasks and coding-agent workflows. It supports deep reasoning, multimodal understanding and tool calling, and returns text.

It has a 256K-token context window and can generate up to 128K output tokens. It accepts text and image input and returns text. It was released on March 28, 2026.

## Capabilities

Seed 2.0 Code Preview (260328) supports reasoning, tool calling and vision. It accepts text and image input and returns text, so a screenshot can accompany a programming request.

Tool calling lets a coding agent invoke the tools its host provides, and deep reasoning supports planning a change across several steps.

## Pricing

Seed 2.0 Code Preview (260328) is priced from $0.50 per 1M input tokens and from $3.00 per 1M output tokens. Pricing is tiered, so these figures are the starting tier. Cache reads are billed from $0.10 per 1M tokens.

Seed 2.0 Code Preview (260328) is available through RealRelay's OpenAI-compatible API.

## Use cases

Use Seed 2.0 Code Preview (260328) as the model behind a coding agent that reads a repository, plans a change, calls tools to edit and test code, and iterates on the result.

It also fits frontend development, where a screenshot can be sent with the request, and programming tasks that span several languages.

## Call it

OpenAI-compatible chat completions:

```bash
curl https://www.realrelay.ai/v1/chat/completions \
  -H "Authorization: Bearer $REALRELAY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "byteplus/seed-2-0-code-preview-260328", "messages": [{"role": "user", "content": "Hello"}]}'
```

## FAQ

### What is Seed 2.0 Code Preview (260328)?

Seed 2.0 Code Preview (260328) is a ByteDance Seed model optimized for agentic coding, suited to frontend development, multilingual programming and coding-agent workflows.

### How much does Seed 2.0 Code Preview (260328) cost?

Seed 2.0 Code Preview (260328) is priced from $0.50 per 1M input tokens and from $3.00 per 1M output tokens, and the figures are the starting tier of tiered pricing. Cache reads are billed from $0.10 per 1M tokens.

### What is the context window of Seed 2.0 Code Preview (260328)?

Seed 2.0 Code Preview (260328) has a 256K-token context window and can generate up to 128K output tokens.

### What inputs and outputs does Seed 2.0 Code Preview (260328) support?

Seed 2.0 Code Preview (260328) accepts text and image input and returns text.

### Is Seed 2.0 Code Preview (260328) good for coding agents?

Yes. It is optimized for agentic coding, and BytePlus describes it as suited to coding-agent workflows, frontend development and multilingual programming tasks.

### When was Seed 2.0 Code Preview (260328) released?

Seed 2.0 Code Preview (260328) was released on March 28, 2026.

### How do I call Seed 2.0 Code Preview (260328) via the API?

Send requests to RealRelay's OpenAI-compatible API with the model ID byteplus/seed-2-0-code-preview-260328 to use Seed 2.0 Code Preview (260328).