Text model

grok-4.7-build-fast API pricing

xAI's Grok series — chat plus image generation.

Model IDgrok-4.7-build-fast

ChatStreamingTool callingVision

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Call summary

Input

$4.40$2.20/ 1M tokens

Cache write $2.20

Output

$13.20$6.60/ 1M tokens

Cache read $0.55

Context Window

500K

API Endpoints

grok-4.7-build-fast API endpoints

One API key — call this model through any of the 2 endpoints below.

POST/v1/chat/completionsOpenAI-compatible · Works for every model

Docs

POST/v1/responsesResponses API · Native for Codex CLI

Docs

grok-4.7-build-fast pricing tiers

Pricing is tiered by total input length per request (cache included); once a threshold is crossed, the whole request is billed at that tier. All prices are per 1M tokens.

Tier

Standard≤ 200K

Input

$4.40$2.20Cache write: $2.20

Output

$13.20$6.60Cache read: $0.55

Tier

Long context> 200K

Input

$8.80$4.40Cache write: $4.40

Output

$26.40$13.20Cache read: $1.10

Tier	Input	Output
Standard≤ 200K	$4.40$2.20Cache write: $2.20	$13.20$6.60Cache read: $0.55
Long context> 200K	$8.80$4.40Cache write: $4.40	$26.40$13.20Cache read: $1.10

Production reliability

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More Grok models on Router One

7 other Grok models on the same gateway and API key — each page lists endpoints, posted price, and context window.

grok-4.3$0.50 in / $1.00 out per 1M500K context grok-4.5$0.80 in / $2.40 out per 1M500K context grok-4.6$1.10 in / $3.30 out per 1M500K context grok-4.7$1.10 in / $3.30 out per 1M500K context grok-build-0.1$0.40 in / $0.80 out per 1M500K context grok-imagine-image$0.50 per image grok-imagine-image-quality$0.50 per image

Call grok-4.7-build-fast from your code

The same API key works across all 2 endpoints below.

Endpoint

/v1/chat/completions

Model ID

grok-4.7-build-fast

Request example

bash

curl -X POST \
  https://api.router.one/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "grok-4.7-build-fast",
    "messages": [
      {"role": "user", "content": "Hello!"}
    ]
  }'

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grok-4.7-build-fast at a glance

grok-4.7-build-fast is a Grok-series text model on Router One. request input ≤ 200,000 tokens: Input $2.20 / 1M tokens, Output $6.60 / 1M tokens, Cache write $2.20 / 1M tokens, Cached input $0.55 / 1M tokens; request input > 200,000 tokens: Input $4.40 / 1M tokens, Output $13.20 / 1M tokens, Cache write $4.40 / 1M tokens, Cached input $1.10 / 1M tokens. The total input tokens in each request select the tier; its rates apply to the whole request, not only tokens above the threshold. Context window: 500K tokens. Accepts text, image; returns text. Endpoints: POST /v1/chat/completions (OpenAI-compatible), POST /v1/responses (Responses API, the Codex CLI path).

grok-4.7-build-fast FAQ

How much does grok-4.7-build-fast cost on Router One?

request input ≤ 200,000 tokens: Input $2.20 / 1M tokens, Output $6.60 / 1M tokens, Cache write $2.20 / 1M tokens, Cached input $0.55 / 1M tokens; request input > 200,000 tokens: Input $4.40 / 1M tokens, Output $13.20 / 1M tokens, Cache write $4.40 / 1M tokens, Cached input $1.10 / 1M tokens. The total input tokens in each request select the tier; its rates apply to the whole request, not only tokens above the threshold.

Which endpoints serve grok-4.7-build-fast?

grok-4.7-build-fast is served on 2 endpoints — POST /v1/chat/completions (OpenAI-compatible), POST /v1/responses (Responses API, the Codex CLI path). The same Router One API key works on each.

What is grok-4.7-build-fast's context window?

grok-4.7-build-fast accepts up to 500K tokens of context per request on Router One.

Start using grok-4.7-build-fast

Create an API key and call grok-4.7-build-fast at request input ≤ 200,000 tokens: $2.20 in / $6.60 out per 1M tokens on Router One — pay as you go, with per-request cost and latency visibility.

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