Recently, the charts that convert Duolingo English Test Scores to TOEFL and IELTS scores were adjusted. You can see the current charts right here. An archive of the old charts is available via the Way Back Machine.
For instance, previously a Duolingo English Test score of 125 converted to 103-107 on the TOEFL iBT. Now, that converts to 93 -97 on the TOEFL iBT.
Likewise, a score of 125 on the Duolingo used to equal an IELTS score of 7.5, but now that is equal to an IELTS score of 6.5.
There are also changes to the Duolingo to CEFR conversion chart.
I suppose this is due to the inclusion of new question types on the DET. I don’t know if any institutions have adjusted their score requirements at this time. I suspect that many institutions are totally unaware of the change.
To illustrate, here is the top of the current Duolingo to TOEFL chart:
And here is the top of the old chart (forgive the broken image):