Calibre vs WebPageTest (2026): which should you pick?
As of Oct 23, 2026, WebPageTest grades higher than Calibre: 2.6 against 2.2 out of 4.0.
Checked Oct 23, 2026 · graded Oct 23, 2026 by ToolGPA
Calibre grades higher on platforms. WebPageTest grades higher on value for money, the free plan and ease of use. They get the same grade on features.
Price, platforms and features side by side. The table says where each price was read and when.
Calibre
Web performance monitoring with RUM, CrUX data and synthetic tests
WebPageTest
Page speed tests from real browsers in locations around the world
Which one is for you
Pick Calibre if
- Fits if you watch lots of sites, since Starter allows unlimited sites
- Works for developers who want speed checks on each GitHub pull request
Look elsewhere if
- Watch out: monitoring stops when the monthly test allowance runs out, unless you buy packs at $60 per 5,000
- Tight if you get real traffic, as Starter's real user tracking pauses at 5,000 sessions a month
- Pricey if your team grows, at $15 a month for each seat past those included
- Watch out: cancelling deletes all of an account's data immediately and permanently
- Pricey if you pay yearly expecting a discount, as $900 is the same as 12 monthly payments
Pick WebPageTest if
- Fits if you need to see how a page loads in a given browser from a given city
- Works for checking a fix's effect side by side before you change the site, on Pro
Look elsewhere if
- Watch out: every page load counts as a run, so 5 runs with repeat views use 10 of your 150
- Tight if you stay on Starter, with 3 runs per test and no scheduled tests, alerts, API or Experiments
- Not for you if you want to try Pro first, as there's no free trial
- Too light for bigger teams, as a Pro account holds up to 5 members
How we grade them
| 2.2GPACalibreFair | 2.6GPAWebPageTestGood | |
|---|---|---|
| Value for money | CStarter is $75 a month, or $900 a year, for 5,000 real user sessions, 5,000 lab tests and 3 seats, at this category's dearer quarter. Team is $150 and Company $1,500 a month paid yearly. | BPro is $180 a year for 1,000 test runs a month, $15 a month, inside this category's cheaper quarter, and it holds up to 5 users. Monthly billing is $18.75; 5,000 runs are $840 a year. |
| Free plan and trial | CNo free plan, but the 15-day trial needs no card. | BThe free Starter plan gives 150 test runs a month, 30 locations, Lighthouse, filmstrip, video, Opportunities, 3-step scripts and 60 days of history. Enough for one person testing now and then, though repeat views double the count. |
| Features | CReal user Core Web Vitals with interaction attribution, CrUX for every site, scheduled lab tests, third-party script impact, a CLI, Node.js API and GitHub pull request checks. It does speed monitoring fully, but that's a smaller job, and tests stop at the allowance. | CReal-browser tests over connections from 3G to fiber, Lighthouse, filmstrips and Opportunities, with scheduled tests, alerts, Smartboards and Experiments on Pro. It does lab speed testing fully, but that's a smaller job, with no real user data on record. |
| Ease of use | CNo rating on record. You add sites, test profiles and real user tracking, and watch the session and test allowances so monitoring doesn't pause. | BNo rating on record. A test is a page address, a location and a browser, with nothing to install or connect first. |
| Platforms and integrations | BWeb, with a command-line client, Node.js API, webhooks, GitHub, Slack, Zapier, Netlify and Render. No desktop or phone app. | CWeb only, with no integrations on record; the API comes only with Pro. No desktop or phone app. |
| Best for | speed monitoring across many sites | real-browser page speed tests worldwide |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Calibre and WebPageTest. How we grade
Price against what you get
Calibre starts at $75 a month and scores 2.3 out of 4 on features, ease of use and platforms. WebPageTest starts at $15 a month when paid by the year and scores 2.3.
They score the same, and WebPageTest starts $60 a month lower. Of the other technical SEO tools on the chart, 6 score higher than Calibre for less, and 5 score higher than WebPageTest for less.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Where they differ
- WebPageTest also covers dashboards.
At a glance
| Calibre | WebPageTest | |
|---|---|---|
| Pricing | Free trial | Free plan |
| Starts at | $75 per month, billed monthly or $900 a year | $180 per year for 1,000 test runs a month ($18.75 billed monthly) |
| Free plan | None | Starter plan: 150 test runs a month (up to 3 per test), 30 test locations, Lighthouse, filmstrip and video, Opportunities, 3-step scripts and 60 days of history. |
| Free trial | 15-day free trial, no credit card required | None listed |
| Web | ||
| Made by | Calibre Analytics | LogicMonitor |
| Price read from | calibreapp.com | logicmonitor.com |
| Checked | Oct 23, 2026 | Oct 23, 2026 |
Worth knowing
Calibre
- There is no free plan, and monitoring stops when the monthly test allowance runs out unless you add test packs at $60 per 5,000.
- Starter's real user tracking pauses at 5,000 sessions a month; Team includes 10,000 and then charges $75 per 100,000.
- Seats beyond those included cost $15 a month each, and paying yearly costs the same as 12 monthly payments.
- Cancelling deletes all of an account's data immediately and permanently.
WebPageTest
- Every page load counts as a test run: 5 runs with first and repeat views use 10 of the monthly allowance.
- Starter allows 150 runs a month and 3 runs per test; scheduled tests, alerts, the API and Experiments need Pro.
- There is no free trial of Pro, and a Pro account holds up to 5 team members.
- The webpagetest.org site answered with a bot check; prices were read on LogicMonitor's WebPageTest pricing page.
Key features
Calibre
- Real user monitoring
- Collects Core Web Vitals from real browser sessions, with adjustable sampling and attribution of the page elements behind slow interactions.
- Chrome UX Report monitoring
- Tracks Google's CrUX field data for every monitored site and shows which pages pass the Core Web Vitals assessment.
- Synthetic page speed tests
- Scheduled and on-demand lab tests for each URL and test profile, with synthetic snapshots kept for the life of the account.
- Third-party impact
- Breaks down how external scripts and other third-party resources affect each page's load and responsiveness.
- Developer tooling
- A command-line client, Node.js API, webhooks, GitHub pull request checks and CI/CD hooks to test before and after deploys.
- Sites ranked by speed
- An overview that ranks every monitored site by performance, with alerts sent to Slack and deploy markers from Netlify.
WebPageTest
- Real-browser tests
- Test in Chrome (stable, beta and canary), Firefox (stable, beta and ESR), Edge and Brave, on desktop or mobile, over connection speeds from 3G to fiber.
- Global test locations
- Starter runs tests from 30 locations across six continents; Pro adds more, including many more US cities.
- Lighthouse, filmstrip and video
- Each test can include a Lighthouse run, a filmstrip and a video of the page loading, on every plan.
- Opportunities
- Recommendations grouped under quickness, usability and resilience, with tips on what to fix. Available to all users.
- Experiments
- Pro runs a proposed optimization side by side with a control test in a sandbox, so its effect shows without changing the site's code.
- Scheduled tests and alerts
- Pro schedules tests, sends custom alerts, builds Smartboards dashboards and keeps 13 months of history, with API, private and bulk testing.
Plans
Calibre
Starter$75
per month, billed monthly or $900 a year
5,000 real user sessions and 5,000 synthetic tests a month, CrUX data, 3 seats, unlimited sites, 1 team and 90 days of RUM data.
Team$150
per month, billed monthly or $1,800 a year
10,000 real user sessions, 15,000 synthetic tests, 10 seats, unlimited teams, SAML single sign-on and 1 year of RUM data.
Company$1,500
per month, paid yearly
1 million real user sessions, 50,000 tests, 50 seats, a security audit log, invoice payment, priority support and 2 years of RUM data.
WebPageTest
Starter$0
150 test runs a month, up to 3 runs per test, 30 locations, Lighthouse, Opportunities and 60 days of test history.
Pro 1,000 runs$180
per year for 1,000 test runs a month ($18.75 billed monthly)
Scheduled tests, alerts, Smartboards, API access, Experiments, private and bulk tests, more locations, 13 months of history and up to 5 users.
Pro 5,000 runs$840
per year for 5,000 test runs a month ($87.50 billed monthly)
The same Pro features with a larger monthly allowance of test runs.
Pro 10,000 runs$1,620
per year for 10,000 test runs a month ($168.75 billed monthly)
The same Pro features with 10,000 test runs a month.
Pro 20,000 runs$3,000
per year for 20,000 test runs a month ($312.50 billed monthly)
The largest listed Pro allowance, with 20,000 test runs a month.
Ways to pay less
Calibre
No public discounts listed.
WebPageTest
- Annual discount
Save 20% with annual billing
Pro with 1,000 runs a month is $180 a year billed annually, against $18.75 a month billed monthly; the pricing page lists a 20% saving.
Common questions
Which is cheaper, Calibre or WebPageTest?
As of Oct 23, 2026, WebPageTest is cheaper to start with: $15 a month when paid by the year, against $75 a month for Calibre. Calibre starts at $75 per month, billed monthly or $900 a year, and WebPageTest starts at $180 per year for 1,000 test runs a month ($18.75 billed monthly).
Which has a free plan, Calibre or WebPageTest?
As of Oct 23, 2026, only WebPageTest has a free plan. Calibre does not, though it has a free trial.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.