What is xAI: Grok 4.5's context window?

xAI: Grok 4.5 supports a context window of 500,000 tokens, allowing you to process large documents and maintain long conversations.

How to use xAI: Grok 4.5 API via Ofox?

Simply set your base URL to https://api.ofox.run/v1 and use your Ofox API key. The API is OpenAI-compatible — just change the base URL and API key in your existing code.

What capabilities does xAI: Grok 4.5 support?

xAI: Grok 4.5 supports the following capabilities: function calling, reasoning, prompt caching. Access all features through the Ofox.ai unified API.

xAI: Grok 4.5

Name: xAI: Grok 4.5
Brand: x-ai
Price: 2 USD
Availability: InStock

Chat

x-ai/grok-4.5

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Grok 4.5 is xAI's frontier model, released on 2026-07-08, delivering strong performance on coding, knowledge work, and STEM tasks. It is a reasoning model with tool use (function calling) and prompt caching support, letting multi-step agent loops reuse a shared context cheaply. Context window: 500K tokens, output: 64K. Accessible via the OpenAI-compatible protocol.

Context Window

500K

Max Output Tokens

66K

Released

2026-07-08

Capabilities

Function CallingReasoningPrompt Caching

Available Providers

xAI

Supported Protocols

openai

Providers

xAI

Input Tokens

$2/M

Output Tokens

$6/M

Cache Read

$0.3/M

Protocols

openai/v1/chat/completions/v1/responses

Code Examples

from openai import OpenAI

client = OpenAI(
    base_url="https://api.ofox.run/v1",
    api_key="YOUR_OFOX_API_KEY",
)

response = client.chat.completions.create(
    model="x-ai/grok-4.5",
    messages=[
        {"role": "user", "content": "Hello!"}
    ],
)

print(response.choices[0].message.content)