---
title: "Grok 4.7 Build Fast API price | RelaySwitch"
canonical: https://relayswitch.io/models/grok-4.7-build-fast
generated: 2026-11-12T04:44:13.801Z
source: https://api.relayswitch.io/v1/catalog
base_url: https://api.relayswitch.io/v1
---

# Grok 4.7 Build Fast

Grok 4.7 Build Fast by xAI through the RelaySwitch API: $2.00 per million input tokens, $6.00 per million output tokens. Pay by card or crypto (Card, USDT, USDC, BTC, ETH, SOL). No KYC.

50% under xAI's list price

## Price per million tokens

| Input | Cached input | Output |
| --- | --- | --- |
| $2.00 | $0.20 | $6.00 |

xAI list price: $4.00 in / $12.00 out.

## Specs

- Model id: `grok-4.7-build-fast`
- Developer: xAI
- Context window: 500K tokens
- Max output: not published
- Input: text

## Call it

```bash
curl https://api.relayswitch.io/v1/chat/completions \
  -H "Authorization: Bearer $RELAYSWITCH_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "grok-4.7-build-fast", "messages": [{"role": "user", "content": "Hello"}]}'
```

## In JanitorAI, SillyTavern, Chub and Risu

One 2K-in / 300-out turn on Grok 4.7 Build Fast: $0.0058 at today's rate; a long chat resends its history, so the price grows with the context setting.

| App | URL field | Value | Model |
| --- | --- | --- | --- |
| JanitorAI | Proxy URL | https://api.relayswitch.io/v1/chat/completions | grok-4.7-build-fast |
| SillyTavern | Custom Endpoint (Base URL) | https://api.relayswitch.io/v1 | grok-4.7-build-fast |
| Chub | OpenAI Reverse Proxy URL | https://api.relayswitch.io/v1 | grok-4.7-build-fast |
| Risu | URL | https://api.relayswitch.io/v1 | grok-4.7-build-fast |

API key: your sk-relay- key in every app. Ranked by use with this price on every model: https://relayswitch.io/best-models/janitorai, https://relayswitch.io/best-models/sillytavern, https://relayswitch.io/best-models/chub

No app? Grok 4.7 Build Fast runs as a browser chat with characters, images and video at Unrestrictable, no key to paste: https://unrestrictable.ai/chat?model=grok-4.7-build-fast&utm_source=relayswitch.io&utm_medium=site&utm_campaign=model-md

Keys and top-ups: https://app.relayswitch.io/console