Fact · Languages and accents
125,000hours of X to English translation data
Whisper's training data includes 125,000 hours of translation data from speech in other languages into English.
Checked against its source on October 17, 2026
In the source's own words
“The dataset also includes 125,000 hours of X→en translation data.”
Robust Speech Recognition via Large-Scale Weak Supervision (full text), Alec Radford et al., OpenAI (arXiv), 2022, Introduction.
Open the original (DOI 10.48550/arXiv.2212.04356)- What it measures
- The paper's translation results are all for speech in another language translated into English, the X to English direction.
- What it does not show
- The statement is about the training data. It does not say that every Whisper release translates equally well.