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xAI·Grok family
Grok 4.3
proprietaryReleased Apr 1, 2026
xAI's latest and most intelligent model with strong agentic tool calling, minimal hallucinations, and configurable reasoning. Supports 1M token context window with competitive pricing.
ChatText completionFunction callingVisionCode generationReasoningtext · image · code
Provider (1)
Sorted by total cost (input + output per 1M tokens). Select a row to view provider details.
| Provider | Pricing (per 1M) | Rate limits | Regions | Health | Latency |
|---|---|---|---|---|---|
| In: $1.25Out: $2.50 | 300 RPM / 500K TPM | us-east-1global | Healthy | 0ms |
Quick start
Use this model via xAI with an OpenAI-compatible SDK.
import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://api.xai.com/v1",
apiKey: process.env.XAI_API_KEY,
});
const response = await client.chat.completions.create({
model: "grok-4.3",
messages: [
{ role: "user", content: "Hello!" }
],
});
console.log(response.choices[0].message.content);Using xAI API · OpenAI-compatible SDK