LLM API
xAIText generationReleased July 8, 2026

Grok 4.5

Grok 4.5 costs $2 per 1M input tokens and $6 per 1M output tokens on LLM API, with a 500K-token context window.

Pricing

Served by xAI, the only provider.

Grok 4.5 prices on LLM API
Input$2per 1M tokens
Output$6per 1M tokens
Cache read$0.3per 1M tokens
Web search$0.005per search

Features

  • ToolsYes
  • Parallel tool callsNo
  • Image inputYes
  • ReasoningYes

    Levels: low, medium, high · default medium

  • Prompt cachingYes
  • Structured outputsYes
  • JSON modeYes
  • StreamingYes
  • Web searchNo

Call Grok 4.5

POST /v1/chat/completionsSet LLMAPI_KEY to your LLM API key.Chat Completions docs

import os

from openai import OpenAI

client = OpenAI(
    base_url="https://api.llmapi.ai/v1",
    api_key=os.environ["LLMAPI_KEY"],
)

response = client.chat.completions.create(
    model="grok-4.5",
    messages=[{"role": "user", "content": "Hello"}],
)
print(response.choices[0].message.content)

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