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

Get API Key Run your first request

Call summary

Input

$4.40$2.20/ 1M tokens

Cache write $2.20

Cache read $0.55

Output

$13.20$6.60/ 1M tokens

Applies to request input ≤ 200,000 tokens · See pricing tiers

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

Chat Completions reference

POST/v1/responsesResponses API · Native for Codex CLI

Responses API reference

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: $2.20Cache read: $0.55

Output

$13.20$6.60

Tier

Long context> 200K

Input

$8.80$4.40Cache write: $4.40Cache read: $1.10

Output

$26.40$13.20

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

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!"}
    ]
  }'

Get API Key

Production reliability

Privacy-safe aggregates from real Router One model calls, so you can assess stability and response latency before integrating.

Successful response share

87.42%

Success 2xx

87.42%

Rate limit 429

0.00%

Server 5xx

12.58%

TPS

130.73

tokens/s

Avg. time to first token

3.9 s

Avg. latency

17.99 s

Includes production requests ending in 2xx, 429, or 5xx. Average latency uses successful requests; time to first token and TPS require complete observations from successful streams. Public thresholds are 100 requests and 5 independent principals.

Updated Nov 10, 2026, 9:51 AM UTC

More Grok models on Router One

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

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 Imagine Image$0.50 per image Grok Imagine Image Quality$0.50 per image

Grok 4.7 Build Fast at a glance

Grok 4.7 Build Fast (model ID grok-4.7-build-fast) is a Grok-series text model on Router One. Grok 4.7 Build Fast is priced in whole-request tiers. 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. No Router One subscription plan includes Grok 4.7 Build Fast today; every call bills the wallet at its posted rate. 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?

Grok 4.7 Build Fast is priced in whole-request tiers. 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.

Is Grok 4.7 Build Fast included in Router One subscriptions?

No Router One subscription plan includes Grok 4.7 Build Fast today; every call bills the wallet at its posted rate.

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 $2.20 in / $6.60 out per 1M tokens (request input ≤ 200,000 tokens) on Router One — pay as you go, with per-request cost and latency visibility.

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