OpenAudio-S1

Training compute

3.4×10²² FLOP

Parameters

4B

Published

Jun 3, 2025

OpenAudio-S1 is an AI model developed by Fish Audio (United States), first published in June 2025. It works in the speech domain, on tasks such as speech synthesis and text-to-speech (tts).

Training it took an estimated 3.4×10²² FLOP of compute (estimation method: operation counting). The model has 4,000,000,000 parameters. It was trained on roughly 1.4T datapoints.

Access: API access. Its weights are not openly released. Epoch AI rates the confidence of this record as likely.

Full record

Organization: Fish Audio
Country of organization: United States
Domain: Speech
Task: Speech synthesis, Text-to-speech (TTS)
Training compute: 3.4×10²² FLOP
Compute estimation method: Operation counting
Parameters: 4,000,000,000
Dataset size: 1.4T
Model accessibility: API access
Open weights: No
Epoch confidence: Likely