RentGPU RentGPU
寻找 GPU →
by xAI

xAI: Grok 4.5.

multimodal closed 500K ctx
Cheapest input
$2.0/M
on OpenRouter
Cheapest output
$6.0/M
on OpenRouter
Hosted equiv.
~$2.16/hr
@ 100 tok/s on OpenRouter

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

Hosted API only

No self-host path — closed weights.

xAI: Grok 4.5's weights aren't published. Use it via the access providers below.

Where to use it

Cheapest hosted endpoints.

Provider Access $/M in $/M out
OpenRouter api aggregator $2.0 $6.0 Launch ↗
FAQ

Frequently asked.

How do I run xAI: Grok 4.5?
xAI: Grok 4.5 is a closed-source API model. The cheapest way to access it is through the API providers listed on this page (direct API, aggregators, and hosted chat UIs).
Where can I access xAI: Grok 4.5?
xAI: Grok 4.5 is available via OpenRouter. Each access option lists its own pricing (per million tokens or hourly hosting).
How much does it cost to run xAI: Grok 4.5?
API pricing starts at $2.0/M input tokens and $6.0/M output tokens. Self-hosting cost depends on the GPU you rent — see the Run It Yourself tab.
Is xAI: Grok 4.5 open-source or proprietary?
xAI: Grok 4.5 is a proprietary model from xAI. Access is API-only — there are no public weights to download.