Fact · Speech recognition
4.23percent word error rate
In the Voxtral paper's Table 4, Gemini 2.5 Flash had a word error rate of 4.23 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 ... Gemini 2.5 Flash 25.25 6.20 4.64 6.17 4.74 6.76 2.21 4.23 3.17”
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 Gemini 2.5 Flash, FLEURS Portuguese: 4.23 percent.
- System
- Gemini 2.5 Flash
- Kind
- Cloud service
- Test set
- FLEURS
- Language
- Portuguese
- Speech
- Clean read speech
- Year
- 2025