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Models / xAI

Grok 4.3

$1.25/Mtok in

Million-token context at roughly half the flagship rate.

Playground

Try it in the browser

PlaygroundxAI$1.25 in / $2.5 out per 1M tokens

Facts

At a glance

Availability

Live

Pricing

$1.25 / M input · $2.5 / M output

Endpoint

Chat Completions

/v1/chat/completions

Context window

1,000k tokens

API

Call it from code

import OpenAI from "openai"

const client = new OpenAI({
  baseURL: "https://api.companyfabric.com/v1",
  apiKey: process.env.COMPANYFABRIC_API_KEY,
})

const res = await client.chat.completions.create({
  model: "xai/grok-4-3",
  max_tokens: 1024,
  temperature: 0.7,
  messages: [{ role: "user", content: "Say hello from the fabric." }],
})

console.log(res.choices[0].message.content)

FAQ

Frequently asked questions

How much does Grok 4.3 cost?

$1.25 / M input · $2.5 / M output. The exact cost of each call is shown before you run it and metered to your prepaid balance, no subscription required.

Why use Grok 4.3 on CompanyFabric instead of going direct?

One key and one balance across every model in the library, at pricing at parity with or below the direct API. Switching models is a one-line change.

Is Grok 4.3 available through the OpenAI SDK?

Yes, point any OpenAI SDK at api.companyfabric.com/v1 and set model to "xai/grok-4-3".

Variants

Same family

Grok 4.6

$2/Mtok in

xAI

xAI's flagship, half-million-token context.

Added 30 Aug 2026 · text

Grok 4.5

$2/Mtok in

xAI

The previous flagship, same rate card.

Added 30 Aug 2026 · text

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One key. Every model. Exact prices.

Run Grok 4.3 with free starter credits. Free starter credits included, no subscription required.

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