Alibaba's open text-to-speech with voice cloningAlternative to
MAI-Voice-2
MiMo-V2.5-TTS+3Open source alternatives to Fish Audio S2 Pro
2 open source tools do the job of Fish Audio S2 Pro. The most starred is Qwen3-TTS, with 14.3k stars. Verified on GitHub. About Fish Audio S2 Pro
Fish Audio S2 ProFree
Qwen3-TTS14.3k stars · Apache 2.0GitHubAll 2 alternatives
Questions about alternatives to Fish Audio S2 Pro
What is the best open source alternative to Fish Audio S2 Pro?
By GitHub stars it is Qwen3-TTS, with 14,398 stars and a commit on 17 Mar. Alibaba's open text-to-speech with voice cloning. Next come ZONOS2 (328 stars).
Is there a free alternative to Fish Audio S2 Pro?
Yes. The code of all 2 is public under Apache 2.0, so you can use them with no licence fee. Running one yourself costs the server and your time to look after it, and some makers also sell a hosted plan.
Which Fish Audio S2 Pro alternatives can I host on my own server?
All 2: Qwen3-TTS and ZONOS2. Each tool's page says what it needs to run.
Which ones are still being worked on?
0 of the 2 we track had a commit in the last 30 days. The quietest is Qwen3-TTS, last changed on 17 Mar. A recent commit shows the project is kept up, not that it will stay that way.
What licences do they use?
Apache 2.0 (2). MIT, BSD and Apache let you change and reuse the code freely.
What do I lose by leaving Fish Audio S2 Pro?
The hosting. Fish Audio S2 Pro's maker runs the servers for you; with an open source tool the updates, backups, security fixes and support are yours, unless you take the maker's hosted plan. Features differ too, so check what each one imports and exports before you move your data.