Low cost

grok-4.3 API pricing

xAI's Grok series — chat plus image generation.

Model IDgrok-4.3

Get API Key Run your first request

Call summary

Input

$1.25$0.50/ 1M tokens

Cache write $0.50

Output

$2.50$1.00/ 1M tokens

Cache read $0.08

Context Window

500K

API Endpoints

Available Configurations

grok-4.3 API endpoints

One API key — this model is served on the endpoint below.

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

Docs

grok-4.3 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

$1.25$0.50Cache write: $0.50

Output

$2.50$1.00Cache read: $0.08

Tier

Long context> 200K

Input

$2.50$1.00Cache write: $1.00

Output

$5.00$2.00Cache read: $0.16

Tier	Input	Output
Standard≤ 200K	$1.25$0.50Cache write: $0.50	$2.50$1.00Cache read: $0.08
Long context> 200K	$2.50$1.00Cache write: $1.00	$5.00$2.00Cache read: $0.16

Production reliability

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

Not enough production samples yet

This window needs at least 100 eligible requests across 5 independent principals. Metrics appear automatically after that threshold is met.

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-build-0.1$0.40 in / $0.80 out per 1M500K context grok-imagine-image$0.50 per image10K context grok-imagine-image-quality$0.50 per image10K context

Call grok-4.3 from your code

Your API key works on this endpoint.

Endpoint

/v1/chat/completions

Model ID

grok-4.3

Routing mode

auto

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-4.3",
    "messages": [
      {"role": "user", "content": "Hello!"}
    ]
  }'

Get API Key

grok-4.3 at a glance

grok-4.3 is a Grok-series text model on Router One. Posted rate: $0.50 in / $1.00 out per 1M tokens (was $1.25 in / $2.50 out). Context window: 500K tokens. Accepts text; returns text. Endpoint: POST /v1/chat/completions (OpenAI-compatible).

grok-4.3 FAQ

How much does grok-4.3 cost on Router One?

grok-4.3 is billed per token on Router One: $0.50 in / $1.00 out per 1M tokens, pay as you go.

Which endpoints serve grok-4.3?

grok-4.3 is served on POST /v1/chat/completions (OpenAI-compatible). Any Router One API key works there.

What is grok-4.3's context window?

grok-4.3 accepts up to 500K tokens of context per request on Router One.

Start using grok-4.3

Create an API key and call grok-4.3 at $0.50 in / $1.00 out per 1M tokens on Router One — pay as you go, with per-request cost and latency visibility.

Get API Key Plans & pay-as-you-go pricing Compare models side by side Quickstart guide