# grok-4-1-fast-non-reasoning — API, Pricing & Context Window

`grok-4-1-fast-non-reasoning` is the low-latency variant of xAI's Grok 4.1 fast line, optimized for quick responses without extended reasoning. It keeps the same massive **2M-token context window** and image input, prioritizing speed for high-throughput workloads.

Vivgrid serves `grok-4-1-fast-non-reasoning` through its unified, OpenAI-compatible API and single billing surface.

## Specifications

|     |     |
| --- | --- |
| **Provider** | xAI |
| **Model ID** | `grok-4-1-fast-non-reasoning` |
| **Best for** | General-purpose |
| **Context window** | 2,000,000 tokens |
| **Modalities** | Text, Image |
| **Tool / function calling** | Yes |
| **Knowledge cutoff** | 2025-07 |
| **Acceleration** | 🌐 Global (Centralized) |

## Pricing

Pricing for `grok-4-1-fast-non-reasoning` matches the provider's published rates. See live pricing in the [Vivgrid Console](https://console.vivgrid.com/).

## Quick start

Call `grok-4-1-fast-non-reasoning` through Vivgrid's unified, OpenAI-compatible endpoint. Get an API key from the [Vivgrid Console](https://console.vivgrid.com/).

```
curl https://api.vivgrid.com/v1/chat/completions \
  -H "Authorization: Bearer $VIVGRID_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "grok-4-1-fast-non-reasoning",
    "messages": [\
      { "role": "user", "content": "Say hello in English, Chinese and Spanish." }\
    ],
    "stream": true
  }'
```

## Ideal use cases

- Latency-sensitive, high-volume traffic
- Large-context retrieval and summarization (up to 2M tokens)
- Fast classification and extraction
- Workloads where speed beats deep reasoning

## Related models

- [grok-4-1-fast-reasoning](/content/docs/models/grok-4-1-fast-reasoning/index.html) — reasoning variant
- [gpt-5-mini](/content/docs/models/gpt-5-mini/index.html) — fast, low-cost alternative
- [gemini-2.5-flash](/content/docs/models/gemini-2.5-flash/index.html) — large-context flash model