# Seed 2.0 Pro (260328)

> ByteDance Seed reasoning model that combines deep reasoning, multimodal understanding and tool calling.

## 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-pro-260328`
- Model page: https://www.realrelay.ai/model/bytedance/seed-2-0-pro-260328

## Overview

Seed 2.0 Pro (260328) is a reasoning model from the ByteDance Seed team. BytePlus lists it with deep reasoning, text generation, multimodal understanding and tool calling. It reads text and images, works through a problem before answering, and can call tools, which fits multi-step analysis and agent workflows.

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 Pro (260328) supports reasoning, tool calling and vision. It accepts text and image input and returns text, so one request can combine a written task with screenshots, charts or photos.

BytePlus describes its capabilities as deep reasoning, text generation, multimodal understanding and tool calling.

## Pricing

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

## Use cases

Use Seed 2.0 Pro (260328) for agent workflows that plan a task, call external tools and check the results, relying on its deep reasoning and tool calling.

Its image input suits document and screenshot analysis, such as reading a chart or a form alongside a written question and returning a text answer.

## 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-pro-260328", "messages": [{"role": "user", "content": "Hello"}]}'
```

## FAQ

### What is Seed 2.0 Pro (260328)?

Seed 2.0 Pro (260328) is a reasoning model from the ByteDance Seed team with multimodal understanding and tool calling. It accepts text and image input and returns text.

### How much does Seed 2.0 Pro (260328) cost?

Seed 2.0 Pro (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 Pro (260328)?

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

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

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

### Does Seed 2.0 Pro (260328) support tool calling?

Yes. Seed 2.0 Pro (260328) supports tool calling, and BytePlus also lists deep reasoning and multimodal understanding for it.

### When was Seed 2.0 Pro (260328) released?

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

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

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