Use Grok 4.5 in Chrome
xAI calls Grok 4.5 its smartest model, built for coding, agentic tasks, and knowledge work. One shortcut on any page, your own OpenRouter key, provider prices.
Get it for $49
What Grok 4.5 is good at
Three jobs it does well from the launcher, and what comes back when you run them.
API references
Ask a question about the API reference you are staring at and get the answer in the launcher.
What it can read
Each tool only reads or calculates. History and copied text start off.
Daily digests
Cheap output tokens make it easy on the long digests you run every day.
Formula-heavy text
Turn a paper abstract or a formula-heavy paragraph into plain language.
What it costs in your browser
Pay OpenRouter per token. UtilEngine adds nothing.
OpenRouter lists Grok 4.5 at $2 for a million input tokens and $6 for a million output tokens. A page of text is a few thousand tokens, so most of what you do in a browser costs cents, not dollars.
At list price a $20 month buys about 2,000 long-article summaries. You are not buying a month, though. You pay for the tokens each job uses, and the rest of your OpenRouter balance just sits there.
The extension asks OpenRouter for the fastest route, which can be a faster route at a higher rate than the one this receipt is priced on. When that route wins, the same three jobs cost about twice what you see here, and your OpenRouter activity page shows what you were actually charged.
Grok 4.5 or Grok 4.7
Two models from the same list, side by side, with what each one is for.
Pick it for chat and Ask AI, where it is already the default
Pick it for new commands, at the same price
Switch between them per command.See how
Switch models mid-chat
Set a default for chat, another for Ask AI, and a different one for any command.
A model for every job
Match each job to the model that suits it.
85 models, one key
Seven providers in the same picker. OpenRouter bills each one at its own rate.
How to use Grok 4.5 in Chrome
A free key, one paste, and the model shows up everywhere the AI runs.
Create an OpenRouter key
One free key reaches Grok 4.5 and every other model in the list.
Paste it in AI Settings
Open AI Settings and paste the key once. It stays in this browser and never syncs.
Pick Grok 4.5
Set it for chat, for Ask AI, or for a single command. Switch again whenever you like.
Grok 4.5, answered
Is Grok 4.5 available in UtilEngine today?
Yes. It is in the list as grok-4.5 and calls x-ai/grok-4.5 through OpenRouter with OpenRouter's :nitro speed routing.
What does Grok 4.5 cost through UtilEngine?
Nothing beyond the one-time $49 for the extension. OpenRouter lists Grok 4.5 at $2 per million input tokens and $6 per million output, so most single page jobs land under a cent. The extension routes for speed, so a faster route can serve the request at up to $4 per million in and $12 out. Requests of 200,000 input tokens or more bill at a long-context rate, up to $8 in and $24 out on the fastest route. Each reply shows the tokens it used, not counting web searches.
Do I need an xAI account?
No. The OpenRouter key you already use for the other models covers Grok 4.5 too, and OpenRouter handles the billing.
Can I use Grok 4.5 for one command and a cheaper model for another?
Yes. Every AI command carries its own model, so Grok 4.5 can answer questions about a page while Summarize stays on the cheap default.
Does the AI act on pages?
No. Every tool it can call reads, from page text and your selection to your tabs and the web, and each call shows as a chip in the answer. It never clicks, types or submits a form.
Grok 4.5, one keystroke away
Chat, Ask AI, and your own commands on any page, in a launcher with 50+ built in.
Get it for $49One-time payment. 14-day refund, no questions asked.