Fact · Speech recognition
3.90percent word error rate
In the Voxtral paper's Table 4, Whisper large-v3 had a word error rate of 3.90 percent on FLEURS Portuguese.
Quote found word for word on the live source, last checked October 19, 2026
In the source's own words
“Model ar nl en fr de hi it pt es ... Whisper large-v3 15.44 5.87 4.00 5.55 5.46 28.87 2.71 3.90 2.81”
Voxtral, Mistral AI, arXiv (Audio and Speech Processing), 2025, Table 4 (FLEURS), column pt.
Open the original- What it measures
- FLEURS is a multilingual benchmark of read speech. The table sits in the same paper, so the systems were compared on the same test.
- What it does not show
- One paper's runs under its own text normalization and decoding, so compare systems within this table, not with other papers' numbers. The paper gives no date per row.
In the data
A row of Speech Recognition Accuracy: Word Error Rates, as Whisper large-v3, FLEURS Portuguese: 3.9 percent.
- System
- Whisper large-v3
- Kind
- Open model
- Test set
- FLEURS
- Language
- Portuguese
- Speech
- Clean read speech
- Year
- 2025