We compared M-Lab ★★★★★ with Google Fiber (original) ★★★★★ and concluded that Google Fiber is a better speed test than M-Lab.
This is mainly because Google Fiber scores higher than M-Lab in data efficiency, speed, privacy-friendliness, and usability.
The radar chart above is based on the results of our standardized speed test test. The results speak for themselves.
Strengths of M-Lab
M-Lab is one of the few speed tests with an accuracy score of 100 (out of 100).
It's good to know that compared to most other speed tests, M-Lab scores quite well and fairly evenly on the different aspects we tested.
M-Lab scores high on the overall score list due to its high accuracy and thoroughness.
Strengths of Google Fiber (original)
Google Fiber (original) is accuracte and fast (which is a rare combination).
There are no ads and no cookies. Google Fiber is therefore a privacy-friendly speed test.
Despite the warning that "You are not on the Google Fiber network. Running a speed test on your mobile network may result in data charges" the Google Fiber speed test is data efficient.
Our recommendation
Based on what we know about speed tests, if we had to choose between these two speed tests, we would choose Google Fiber over M-Lab. The decisive factors are the high scores that Google Fiber achieves in the areas of accuracy, data efficiency, speed, privacy-friendliness and usability.