Models
Grok 4.3
Model id: xai/grok-4.3
- Agentic
- Frontier
- Vision
- Long context
- Tools
xAI Grok 4.3 for fast, reliable chat with strong tool calling and instruction following.
Best for
production assistants, document work, and everyday agent loops.
- Provider
- xAI
- Context window
- 1,000,000
- Release date
- 2026-05-01
Pricing
Input
$1.929 / 1M
Output
$3.858 / 1M
Cached input
$0.3086 / 1M
Web search
Per successful search
$0.0077 / search
Billed on top of tokens when the model uses web search.
Amounts in Canadian dollars, converted at the Bank of Canada indicative rate (2026-07-31).
Performance
Reading
Last 7 days
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Activity
Tokens
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Top 5 tools · last 7 days
Not enough data to display tool activity.
Availability
Availability (%)
Last 7 days
- Operational probes
- 100% over 7 days
- Samples
- 8,608
Quick start
Call the API with a tonia_ key and the exact model id below.
curl
curl https://pass.tonia.ca:8443/v1/chat/completions \
-H "Authorization: Bearer $TONIA_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "xai/grok-4.3",
"messages": [{"role":"user","content":"Bonjour"}]
}'Python (OpenAI SDK)
import os
from openai import OpenAI
client = OpenAI(
base_url="https://pass.tonia.ca:8443/v1",
api_key=os.environ["TONIA_API_KEY"],
)
response = client.chat.completions.create(
model="xai/grok-4.3",
messages=[{"role": "user", "content": "Bonjour"}],
)TypeScript (OpenAI SDK)
import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://pass.tonia.ca:8443/v1",
apiKey: process.env.TONIA_API_KEY,
});
const response = await client.chat.completions.create({
model: "xai/grok-4.3",
messages: [{ role: "user", content: "Bonjour" }],
});