PageBench vs GTmetrix: which should you use?

We make PageBench, so we're not neutral. We've tried to be useful anyway, and there are plenty of cases below where GTmetrix is the better choice.

The short version: GTmetrix is the better tool for watching a site over time. PageBench is quicker when you want to test a page once and fix it with an AI agent.

	PageBench	GTmetrix
Cost	Free	Free plan and paid plans
Account	None	Needed for most features
Test locations	One per test, and you can't choose it	You choose, with more on paid plans
Monitoring and alerts	No	Yes
API to start tests	No	Yes, using credits
Waterfall and visual record of loading	Yes	Yes
AI agents	Paste a prompt, or give it a Markdown link. It can't start tests itself	Official MCP server. It can start tests and read reports
Setup for agents	None	Connect the MCP server

We checked these details in November 2026. We've left out GTmetrix's prices and test limits because they change and sources disagree, so see GTmetrix's site for the current ones.

Choose GTmetrix if

• You want to monitor a site. It can run tests on a schedule and keep the history, and PageBench doesn't do either.
• Location matters. You can choose where a test runs, while PageBench picks for you and can't test from a specific region.
• You want your agent to run tests itself. GTmetrix's official MCP server lets ChatGPT, Claude, Codex, Cursor and others start tests and read reports, so an agent can fix something, re-test and carry on. Those actions use API credits.
• You need an API. PageBench doesn't have one for starting tests.
• Reports shouldn't be public. Every PageBench report can be opened by anyone with its link, and it's deleted after 180 days. Check how GTmetrix handles this for your plan if it matters for client work.

Choose PageBench if

• You want an answer without signing up. Enter a URL and get a report, with no account or credits.
• You're fixing a site with an AI agent and don't want to configure anything. Copy for AI gives you a prompt with the top fixes, rules for how to work and the full report, ready to paste into Claude Code, Cursor or Lovable. It works in any tool that takes text, including ones without MCP support.
• You're making repeated fixes. You can run up to 60 tests a day for free, so re-testing after each change doesn't cost anything.
• Your images are the problem. Image recommendations link to our free image optimizer, which loads that report's images, sizes them for where they're shown and gives you a prompt for swapping them in.

What's the same

Both load your page in Chrome, report Core Web Vitals, and show a waterfall and a visual record of the page loading. Both are lab tests, so neither replaces real-user data. For that, check PageSpeed Insights or the Core Web Vitals report in Google Search Console.

Scores from different tools won't match exactly, because they use different test locations, devices and networks. Pick one tool for before-and-after comparisons and stick with it.

Try them both

Both have a free option, so the fairest test is to run your own page through each one. Test your site on PageBench, and see how we measure performance if you want the details. If you're still choosing between tools, we also compared the main PageSpeed Insights alternatives.