# deepseek-r1-0528 — API, Pricing & Context Window | Vivgrid

> Source: https://vivgrid.com/docs/models/deepseek-r1-0528

deepseek-r1-0528 on Vivgrid: DeepSeek's reasoning-focused R1 model with a 164K context window, available through one unified API.

`deepseek-r1-0528` is a reasoning-focused release from DeepSeek's R1 line, tuned to think through multi-step problems with explicit chains of reasoning. It offers a **164K-token context window** for long, complex tasks.

Vivgrid serves `deepseek-r1-0528` through its unified, OpenAI-compatible API, so you can mix DeepSeek's reasoning model into agent pipelines alongside other providers using one key.

## Specifications

| Field | Value |
| --- | --- |
| Provider | DeepSeek |
| Model ID | `deepseek-r1-0528` |
| Best for | General-purpose |
| Available on | Chat Completions |
| Context window | 163,840 tokens |
| Modalities | Text |
| Tool / function calling | Yes |
| Knowledge cutoff | 2024-07 |
| Acceleration | Global (centralized) |

## Pricing

Pricing in USD per 1M tokens.

| Input | Cached input | Output |
| --- | --- | --- |
| $1.35 | — | $5.40 |

### What one request costs

The rates above applied to a 20K-token prompt with a 2K-token reply — a typical single agent turn, small enough that every request is billed at the base rate.

| Request | Cost |
| --- | --- |
| Cold prompt, nothing cached | $0.0378 |


## API surfaces

The Vivgrid Console catalogs `deepseek-r1-0528` on one surface, all behind the same API key. The endpoint shown is the one the Console previews for that surface.

| Surface | Primary endpoint | Use it for |
| --- | --- | --- |
| Chat Completions | `/chat/completions` | Agent projects, where Vivgrid injects the model, system prompt and tools server-side, and Model API calls that name the model per request. |

## Quick start

Get an API key from the Vivgrid Console (https://console.vivgrid.com), then call `deepseek-r1-0528` directly.

```bash
curl https://api.vivgrid.com/v1/chat/completions \
  -H "Authorization: Bearer $VIVGRID_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "deepseek-r1-0528",
    "messages": [
      { "role": "user", "content": "Say hello in English, Chinese and Spanish." }
    ],
    "stream": true
  }'
```


## Ideal use cases

- Multi-step reasoning and problem solving
- Math, logic, and analytical tasks
- Workflows that benefit from explicit reasoning traces
- Cost-effective alternative to frontier reasoning models

## Related models

- [gpt-6-astra](/docs/models/gpt-6-astra) — OpenAI's frontier gpt-6 coding model
- [deepseek-v4-flash](/docs/models/deepseek-v4-flash) — general-purpose DeepSeek model
- [deepseek-v4-pro](/docs/models/deepseek-v4-pro) — flagship coding model