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Grok 4.5 API Pricing & Quick Start

Grok 4.5 is SpaceXAI's smartest model with frontier performance on coding, knowledge work, and STEM.

Pricing

Input Price
$2.0000
/ 1M tokens
NT$ 65
Output Price
$6.0000
/ 1M tokens
NT$ 194
Context Window
500K
tokens

💱 USD/NTD = 32.38 · before tax · updated 07/30/2026

ProviderxAI
ReleasedJuly 2026
Model IDx-ai/grok-4.5

Technical specifications

Context window
500K tokens
Reasoning
Yes
Input
TextImageFile
Output
Text

Quick Start

Use Grok 4.5 via BazaarLink API — just change the base_url:

Python
from openai import OpenAI

client = OpenAI(
    base_url="https://bazaarlink.ai/api/v1",
    api_key="sk-bl-YOUR_API_KEY",
)

response = client.chat.completions.create(
    model="x-ai/grok-4.5",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(response.choices[0].message.content)
TypeScript
import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://bazaarlink.ai/api/v1",
  apiKey: "sk-bl-YOUR_API_KEY",
});

const response = await client.chat.completions.create({
  model: "x-ai/grok-4.5",
  messages: [{ role: "user", content: "Hello!" }],
});
console.log(response.choices[0].message.content);

Why use Grok 4.5 via BazaarLink?

  • USD billing (TWD-quoted) + unified invoices — no foreign credit card needed for Taiwan teams
  • OpenAI-compatible API — zero code changes required
  • Automatic failover — multi-provider redundancy for the same model
  • Chinese-language support — local team, instant help
Try Now← All Models

Frequently Asked Questions

What is Grok 4.5?

Grok 4.5 is SpaceXAI's smartest model with frontier performance on coding, knowledge work, and STEM.

How much does the Grok 4.5 API cost?

Grok 4.5 costs $2.0000 per 1M input tokens and $6.0000 per 1M output tokens when accessed through BazaarLink.

How do I use Grok 4.5 with the OpenAI SDK?

Set base_url to "https://bazaarlink.ai/api/v1" and use model ID "x-ai/grok-4.5". All OpenAI SDK methods (chat.completions, embeddings, streaming) work without code changes.

What is the context window for Grok 4.5?

Grok 4.5 supports a context window of 500,000 tokens.

Is Grok 4.5 available for free?

Grok 4.5 is a paid model. BazaarLink offers free trial credits on registration so you can test it without a credit card.

Relay integrity checks

Tested endpoints
189 runs
Independent hosts
110
Model-family fingerprint match
0%
Anomalies detected
162 runs
Data range
past 90 days

BazaarLink Probe verifies endpoints that claim to serve this model and flags behavior that differs from the reference baseline.

View the full integrity report →

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