Grok 4.5 API: Pricing and Specs

Grok 4.5 API

Grok 4.5 is a large language model by xAI, available on the Venice API as grok-4-5. It runs privately, with zero data retention.Grok 4.5 is xAI’s intelligent coding model for agentic software engineering and workflow tasks, with function calling, structured outputs, and a 500K-token context window.

Grok 4.5 API pricing

Model ID	Variant	Privacy	Price
`grok-4-5`	Standard	Private	$2.27 / $6.80 per 1M

Grok 4.5 specifications

Spec	Value
Provider	xAI
Released	Jul 7, 2026
Privacy	Private
Status	Stable
Context window	500K tokens
Max output	32K tokens
Reasoning effort	low, medium, high

How to use the Grok 4.5 API

Send requests to POST https://api.venice.ai/api/v1/chat/completions with "model": "grok-4-5" and your API key.

curl https://api.venice.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $VENICE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "grok-4-5",
    "messages": [{ "role": "user", "content": "Explain TEE attestation in two sentences." }],
    "reasoning_effort": "high"
  }'

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Grok 4.5 API

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