Chrome AI

Send a prompt to the AI model built into Google Chrome (Gemini Nano) and get its reply, all on your device.

What it does

Chrome AI is a standalone node, not a model you plug into an agent. It sends Prompt to Chrome’s built-in model and returns the answer as { result }. Nothing leaves your computer, there is no API key and no cost.

Chrome only. The node uses the AI built into Google Chrome, which Google is still rolling out (see Chrome’s built-in AI). It does not work in Firefox; there, use an on-device model from Local models or a cloud AI provider.

When to use it

• Short, private text jobs: rewrite a sentence, pull a name out of a paragraph, draft a one-line reply.
• Workflows that must work offline or must not send text to a cloud service.

For longer or harder tasks, a cloud model behind Basic LLM Chain gives better answers. For other on-device models, see the Local AI nodes.

Inputs and settings

设置项	类型	作用
Prompt	Text	The prompt to use with the model.
Options	Group	The options to use with the model.
Options › Temperature	Number	The temperature to use for the model.
Options › Top K	Number	Sample each next token from only the K most likely candidates. Lower values are more focused; higher values are more varied (default 40). 默认值：40

Without options, Temperature is 0.5 and Top K is 40. Lower values give more focused, repeatable answers; higher values give more varied ones. Use expressions in Prompt to include data from earlier nodes, for example Summarise in one sentence: {{ $input.text }}.

Outputs

• Output

Each output item has these fields:

Field	类型	What it holds
result	Any	The model reply; the parsed result when an output parser is connected

Shape of an output item

{
  "result": null
}

result holds the model’s reply as text.

Dependencies and credentials

None. This node needs no connection and has no slots for other nodes.

Example workflow

1. A Context Menu trigger on selected text.
2. Chrome AI with Prompt Rewrite this politely: {{ $input.selectionText }}.
3. Clipboard Write copies {{ $input.result }}.

Common issues

• It fails with “only works in Chrome”. You are in Firefox, which has no built-in AI. Switch to an on-device or cloud model.
• The model is not available. Chrome’s built-in AI is not enabled or not downloaded yet on this computer. Follow Google’s setup steps for Chrome’s built-in AI, then try again.
• The run was stopped and there is no reply. Stop cancels the answer while the model is still writing.

Related nodes

• Basic LLM Chain: prompt a cloud or local chat model.
• Generate Text: on-device text generation in any browser.
• Summarize: on-device summaries.