Fact · Speech recognition
4.28percent word error rate
In the Voxtral paper's Table 6, GPT-4o mini Transcribe had a word error rate of 4.28 percent on Multilingual LibriSpeech Spanish.
Quote found word for word on the live source, last checked October 19, 2026
In the source's own words
“Model nl fr de it pt es ... GPT-4o mini Transcribe 8.62 4.77 5.44 10.68 5.67 4.28”
Voxtral, Mistral AI, arXiv (Audio and Speech Processing), 2025, Table 6 (Multilingual LibriSpeech), column es.
Open the original- What it measures
- Multilingual LibriSpeech is read audiobook speech in six languages in this table. 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 GPT-4o mini Transcribe, MLS Spanish: 4.28 percent.
- System
- GPT-4o mini Transcribe
- Kind
- Cloud service
- Test set
- Multilingual LibriSpeech
- Language
- Spanish
- Speech
- Clean read speech
- Year
- 2025