Use Grok 4.5 in Chrome
xAI describes Grok 4.5 as a model with frontier performance on coding, knowledge work, and STEM. One shortcut on any page, your own OpenRouter key, provider prices.
Get it for $49Does this page list the free tier limits?
Yes, in the table under Quotas.
Grok 4.5
Explain the rate limit table in plain terms
Sixty requests a minute on the free tier, six hundred on the paid one. A streamed response counts as one request. When you go over, the response carries a Retry-After header with the wait in seconds.
Grok 4.5 3,180 in, 88 out
What Grok 4.5 is good at
Three jobs it does well from the launcher, and what comes back when you run them.
Ask About Page {question} Summarize {selection} Translate To {language} Fix Spelling and Grammar {selection} Rewrite As {tone} Simplify Text {selection} Ask About Page Grok 4.5 How do I page this endpoint?
The endpoint takes a cursor, and a 429 tells you how long to wait.
Based on {tab-text}, answer {question}
API references
Ask a question about the API reference you are staring at and get the answer in the launcher.
What it can read
Every tool reads. Turn any off in settings.
Ask About Page Summarize Translate To Nine posts, three of them about the same outage.
Grok 4.5
Daily digests
Cheap output tokens make it easy on the long digests you run every day.
It is compound growth, and the exponent counts months, not years.
Grok 4.5 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.
Grok 4.5 bills $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 provider's priority tier rather than the one this receipt is priced on. When that tier 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 4.6
Two models from the same list, side by side, so you can put the expensive one where it earns its price.
Pick it for long digests where output tokens add up
Pick it for the newer release 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.
77 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.
Provide API Keys Paste it in AI settings
Run Provide API Keys, paste once, and the key stays in your browser's extension storage.
Models 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 provider can serve the request at up to $4 per million in and $12 out. Each reply shows the tokens it used.
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 in the kit reads, and none of them write. Each call shows as a chip in the thread, and the model never clicks, types or submits anything.
Grok 4.5, one keystroke away
Chat, Ask AI, and your own commands on any page, in a launcher with 50+ built in. One payment, yours forever.
Get it for $49One-time payment. 14-day refund, no questions asked.