Use Gemini 4 Argon in Chrome
Google calls Gemini 4 Argon its frontier model for real-world coding, enterprise knowledge work, and cyber defense. One shortcut on any page, your own OpenRouter key, provider prices.
Get it for $49
What Gemini 4 Argon is good at
Three jobs it does well from the launcher, and what comes back when you run them.
Pull requests on GitHub
Open a pull request and ask what the change breaks before you approve it.
What it can read
Each tool only reads or calculates. History and copied text start off.
Contracts and filings
Pull the term, the renewal, and the liability cap out of a long contract.
Security advisories
Turn a dense security advisory into which versions are hit and what to do.
What it costs in your browser
Pay OpenRouter per token. UtilEngine adds nothing.
OpenRouter lists Gemini 4 Argon at $2 for a million input tokens and $10 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 1,800 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 1.8x what you see here, and your OpenRouter activity page shows what you were actually charged.
Gemini 4 Argon or Gemini 3.8 Flash
Two models from the same list, side by side, with what each one is for.
Pick it for the hardest pages in code, law, and finance
Pick it for everyday pages at well under half the 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.
89 models, one key
Seven providers in the same picker. OpenRouter bills each one at its own rate.
How to use Gemini 4 Argon in Chrome
A free key, one paste, and the model shows up everywhere the AI runs.
Create an OpenRouter key
One free key reaches Gemini 4 Argon 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 Gemini 4 Argon
Set it for chat, for Ask AI, or for a single command. Switch again whenever you like.
Gemini 4 Argon, answered
Is Gemini 4 Argon available in UtilEngine today?
Yes. It is in the list as gemini-4-argon and calls google/gemini-4-argon through OpenRouter with OpenRouter's :nitro speed routing. OpenRouter has served it since October.
What does Gemini 4 Argon cost through UtilEngine?
Nothing beyond the one-time $49 for the extension. OpenRouter lists Gemini 4 Argon at $2 per million input tokens and $10 per million output, which puts a page summary near a cent. Google calls that an introductory price and says it rises to $4 and $20 later, without giving a date. The extension routes for speed, so a faster route can serve the request at up to $3.60 per million in and $18 out. Each reply shows the tokens it used, not counting web searches.
Should I use Argon or Gemini 3.8 Flash?
Both are in the list. Flash costs well under half as much per token and covers everyday page work, so one setup that works keeps Flash on quick commands and gives Argon the long, hard pages in code, contracts, and filings.
Do I need a Google AI subscription?
No. Gemini 4 Argon runs on your OpenRouter key, not a Google AI plan. One key reaches it and the other 88 models in the list.
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.
Gemini 4 Argon, one keystroke away
Chat, Ask AI, and your own commands on any page, in a launcher with 60+ built in.
Get it for $49One-time payment. 14-day refund, no questions asked.