# Seed 2.1 Turbo

> Seed 2.1 Turbo is a multimodal model from ByteDance Seed for coding and long-horizon agent workflows, with a 262,144-token context window.

**ID**: `bytedance-seed/seed-2-1-turbo`  
**Creator**: bytedance-seed  
**Category**: multimodal  
**Context**: 262K tokens  
**Pricing**: $0.50 / $2.50 per 1M · billed by your provider (BYOK)  
**Released**: 2026-08-12  
**Web page**: https://anyrouter.dev/model/bytedance-seed/seed-2-1-turbo

**Input modalities**: text, image, video  
**Output modalities**: text  

**Capabilities**: chat, streaming, function-calling, vision, coding

**Supported parameters**: max_tokens, temperature, top_p, stop, tools, tool_choice, response_format

## Usage

**Endpoint**: `POST https://anyrouter.dev/api/v1/chat/completions`

```bash
curl https://anyrouter.dev/api/v1/chat/completions \
  -H "Authorization: Bearer $ANYROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "bytedance-seed/seed-2-1-turbo",
  "messages": [
    {
      "role": "user",
      "content": "Say hi in 3 words."
    }
  ]
}'
```

## Providers

| Provider | Input | Output |
| --- | --- | --- |
| openrouter-byok | $0.50/M (list) | $2.50/M (list) |

BYOK routes are billed by your own provider key — AnyRouter charges $0. Rates marked (list) are the provider's published list price.

## Source

- Upstream docs: https://seed.bytedance.com/