Models/x-ai

grok-4.5· Released Jul 8, 2026

Name: grok-4.5
Brand: x-ai

x-ai/grok-4.5

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

Input

From$1.65/M

Output

From$4.95/M

Context

Up to 500K

Max output

—

Modalities

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Input and output show the lowest price across upstreams, for reference. Your actual prices are listed per upstream below.

Upstreams & pricing

Upstream	Context	Max output	Input $/1M	Output $/1M	Cached input $/1M
Zenlayer AI Gateway-openai_compat (Global)From price	500K	—	$1.65	$4.95	$0.4125

Routed in real time — you pay the listed price of whichever upstream serves your call.

How to call

curlrequest.sh

curl https://api.tkex.ai/v1/chat/completions \
  -H "Authorization: Bearer $TX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "x-ai/grok-4.5",
    "messages": [
      {"role": "user", "content": "Say hello in five words."}
    ]
  }'