Dia: review, pricing, security and alternatives

What Dia does

Dia belongs to the browser agents family: agents that open pages, click, fill in forms and extract information in place of a human. The directory lists 21 agents in this family.

You use it from: desktop app.

Who is Dia for?

It helps people who spend time on websites without an API: it clicks, fills in and reads pages for you. Typical tasks people give it:

• fill in repetitive forms
• collect prices or information across several sites
• test a website's user flow
• fetch documents from a customer portal

Access and human control

According to its documentation, Dia can:

• drive a web browser
• call online services and APIs

By default it asks for your confirmation before sensitive actions (command, send, delete). Keep that setting, at least at first: full-auto mode saves time but removes the last safeguard.

Dia pricing

The vendor publishes no price: pricing is by quote. There is no permanent free tier.

Agent prices change often and frequently depend on usage (credits, tasks, steps): check the pricing page before committing, especially for a team.

Getting started with Dia

1. Create an account on the official website.
2. Pick the platform: macos and windows.
3. Give it a first playground with nothing at stake: a test folder, a secondary account or a throwaway project. Only open your real accounts once you have seen how it behaves.
4. Give it a short, checkable task, review the result and its action log, then raise the difficulty step by step.

Security: risk level

Every page visited may hide instructions: do not leave a browser agent logged into sensitive accounts without action approval.

Points found for Dia:

• Outside content: it reads web pages or API responses, which may contain booby-trapped instructions (prompt injection).

Three habits: least privilege (minimal rights, dedicated keys), human approval for irreversible actions, a sandbox for code execution. The AI agent security check reviews your setup in a few minutes.

Dia and other browser agents at a glance

The 7 best-ranked agents in the same family, 7 of them open source. The score out of 100 only applies to open-source projects; for proprietary services we show the published entry price. A dash marks information the documentation does not state.

How we rated it

We do not give proprietary agents a score out of 100: there is no public adoption or activity data for them comparable to open-source repositories, and we will not make up a number. This page relies on the vendor's documentation and pricing page, checked on October 25, 2026.

The risk level follows the same rule as for open-source projects: access granted, default human approval and where data is processed. Details on the method page.