Text model

Grok 4.5 API pricing

xAI's Grok series — chat plus image generation.

Model IDgrok-4.5

ChatStreamingTool callingVision

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Call summary

Input

$0.80/ 1M tokens

Cache write $0.80

Cache read $0.20

Output

$2.40/ 1M tokens

Context Window

500K

API Endpoints

Grok 4.5 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

Call Grok 4.5 from your code

The same API key works across all 2 endpoints below.

Endpoint

/v1/chat/completions

Model ID

grok-4.5

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-4.5",
    "messages": [
      {"role": "user", "content": "Hello!"}
    ]
  }'

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Production reliability

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

Successful response share

99.30%

Success 2xx

99.30%

Rate limit 429

0.00%

Server 5xx

0.70%

TPS

61.95

tokens/s

Avg. time to first token

4.45 s

Avg. latency

25.34 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 Oct 24, 2026, 8:12 PM 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 4.6$1.10 in / $3.30 out per 1M500K context Grok 4.7$1.10 in / $3.30 out per 1M500K context Grok 4.7 Build Fast$2.20 in / $6.60 out per 1M500K context Grok Imagine Image$0.50 per image Grok Imagine Image Quality$0.50 per image

Grok 4.5 compared with other models

Spec and price matchups against peer models.

Grok 4.6 vs Grok 4.5

Grok 4.5 at a glance

Grok 4.5 (model ID grok-4.5) is a Grok-series text model on Router One. Posted rate: $0.80 in / $2.40 out per 1M tokens. Router One subscriptions include Grok 4.5 in the Mid-tier models allowance: Pro 1,200, Max 4,500, Ultra 15,000 requests per 30-day cycle. Usage beyond the allowance bills the wallet at posted rates. Context window: 500K tokens. Endpoints: POST /v1/chat/completions (OpenAI-compatible), POST /v1/responses (Responses API, the Codex CLI path).

Grok 4.5 FAQ

How much does Grok 4.5 cost on Router One?

Grok 4.5 is billed per token on Router One: $0.80 in / $2.40 out per 1M tokens, pay as you go.

Is Grok 4.5 included in Router One subscriptions?

Router One subscriptions include Grok 4.5 in the Mid-tier models allowance: Pro 1,200, Max 4,500, Ultra 15,000 requests per 30-day cycle. Usage beyond the allowance bills the wallet at posted rates.

Which endpoints serve Grok 4.5?

Grok 4.5 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 4.5's context window?

Grok 4.5 accepts up to 500K tokens of context per request on Router One.

Start using Grok 4.5

Create an API key and call Grok 4.5 at $0.80 in / $2.40 out per 1M tokens on Router One — pay as you go, with per-request cost and latency visibility.

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