SeamlessM4T v2
Meta AI
• Framework: UnknownSeamlessM4T v2 is Meta AI’s advanced multilingual speech and text translation model, designed for real-time translation across over 100 languages. It supports automatic speech recognition (ASR), text-to-text translation, and speech-to-speech translation within a single unified architecture. Compared to its predecessor, SeamlessM4T v2 improves latency, speech naturalness, and contextual accuracy. The model is optimized for cross-lingual communication, making it ideal for global communication tools, accessibility apps, and cross-border collaboration systems. As an open-source model under Meta’s Seamless Communication initiative, it enables developers to integrate high-quality multilingual translation and speech synthesis into diverse AI products.
SeamlessM4T v2 AI Model

Model Performance Statistics
Views
Released
Last Checked
Version
- Speech-to-speech
- Multilingual ASR
- Text translation
- Parameter Count
- N/A
Dataset Used
Unified Speech Translation Corpus
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