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Grok 4.5

by xAI · Language Models

Context 500K tokensVision

Overview

xAI Grok 4.5 is a frontier multimodal reasoning model for coding, agentic tasks, and knowledge work, served through AtlasCloud with a 500K context window.

Context window500K tokens
Max output500K tokens
Input → Outputtext, image → text
CapabilitiesVision

Pricing

$3.0888 in · $9.2664 out · $0.4633 cached / 1M

UsageRate (USD)Unit
Input tokens$3.0888per 1M tokens
Cached input (cache hit)$0.4633per 1M tokens
Output tokens$9.2664per 1M tokens

Official model pricing · currency: USD · pre-deduction settled by actual usage

Call it in 30 seconds

OpenAI-compatible · base URL https://api.tunerouter.com/v1/

POST/chat/completions
curl https://api.tunerouter.com/v1/chat/completions \
  -H "Authorization: Bearer $TUNEROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "grok-4.5", "messages": [{"role": "user", "content": "Hello!"}]}'

Model ID: grok-4.5 · works with OpenAI SDKs — just point base_url at api.tunerouter.com

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