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VALL-E X

Training compute
1.2×10²¹ FLOP
Parameters
700M
Published
Mar 7, 2023

VALL-E X is an AI model developed by Microsoft (United States), first published in March 2023. It works in the speech domain, on tasks such as translation, speech synthesis, speech recognition (asr) and speech-to-speech.

Training it took an estimated 1.2×10²¹ FLOP of compute (estimation method: operation counting). The model has 700,000,000 parameters. It was trained on roughly 151.2B datapoints. Training ran on NVIDIA V100.

Access: Unreleased. Its weights are not openly released. The reference paper has 262 citations. Epoch AI rates the confidence of this record as likely.

Full record
Organization
Microsoft
Country of organization
United States
Domain
Speech
Task
Translation, Speech synthesis, Speech recognition (ASR), Speech-to-speech
Training compute
1.2×10²¹ FLOP
Compute estimation method
Operation counting
Parameters
700,000,000
Dataset size
151.2B
Training hardware
NVIDIA V100
Model accessibility
Unreleased
Open weights
No
Citations
262
Epoch confidence
Likely
More from Microsoft
SourceEpoch AI, 'AI Models'. Published online at epoch.ai. Retrieved 2026-07-29 from https://epoch.ai/data/ai-models. Licensed under CC BY 4.0.
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