Use GLM 5.3 in Chrome
Z.AI calls GLM 5.3 the most capable open-weights model for coding. One shortcut on any page, your own OpenRouter key, provider prices.
Get it for $49
What GLM 5.3 is good at
Three jobs it does well from the launcher, and what comes back when you run them.
Build logs and repository pages
Ask what a repository page or a build log is telling you, without copying it anywhere.
What it can read
Each tool only reads or calculates. History and copied text start off.
Whole changelogs
Summarize a whole changelog in one pass and get what changed.
Dense paragraphs, cheaply
Put a dense paragraph into plain language for a fraction of a cent.
What it costs in your browser
Pay OpenRouter per token. UtilEngine adds nothing.
OpenRouter lists GLM 5.3 at $1.40 for a million input tokens and $4.40 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 2,900 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.
GLM 5.3 or GLM 5.3 Flash
Two models from the same list, side by side, with what each one is for.
Pick it for dense pages you read in bulk
Pick it for the six built-in commands
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 GLM 5.3 in Chrome
A free key, one paste, and the model shows up everywhere the AI runs.
Create an OpenRouter key
One free key reaches GLM 5.3 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 GLM 5.3
Set it for chat, for Ask AI, or for a single command. Switch again whenever you like.
GLM 5.3, answered
Is GLM 5.3 available in UtilEngine today?
Yes. It is in the list as glm-5.3 and calls z-ai/glm-5.3 through OpenRouter with OpenRouter's :nitro speed routing.
What does GLM 5.3 cost through UtilEngine?
Nothing beyond the one-time $49 for the extension. OpenRouter lists GLM 5.3 at $1.40 per million input tokens and $4.40 per million output on the Z.AI route, so a page summary costs under a cent. The extension routes for speed, so a faster route can serve the request at up to $2.80 per million in and $8.80 out. Each reply shows the tokens it used, not counting web searches.
Do I need a Z.AI account?
No. One OpenRouter key reaches GLM 5.3 and the ten other Z.AI models in the list, and you top up credit on OpenRouter.
Can I use GLM 5.3 for one command and a cheaper model for another?
Yes. The model is a per-command setting, so GLM 5.3 can handle Ask About Page while the shorter commands stay on GLM 5.3 Flash.
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.
GLM 5.3, 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.