If You’Re Paying 20 USD +/Mo For Premium AI Voices (Like ElevenLabs) To Build Workflows, Check Out This New Open-Source Alternative.

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Fish Audio S2 is a free AI voice generator that rivals premium alternatives like ElevenLabs. It offers expressive, high-quality text-to-speech with emotion control and ultra-fast real-time generation.

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At a glance

Pricing

Free · Open Source

Free tier

Yes

API

Yes

Skill level

Technical

About

What is If you’re paying 20 USD +/mo for premium AI voices (like ElevenLabs) to build workflows, check out this new open-source alternative.?

Fish Audio S2 is a free text-to-speech AI voice generator designed to compete with premium services like ElevenLabs. It provides expressive and top-tier audio quality, moving beyond robotic voices to offer nuanced emotion control, allowing users to change the AI's voice to be calm, angry, or even whispering. A key feature is its ultra-fast real-time generation, with response times under 150 milliseconds, making it ideal for conversational AI systems. The tool supports over 80 languages, including English and Korean, and can process multiple speakers' voices simultaneously. While free for research, personal projects, and non-commercial use, a separate license is required for commercial applications. Its open-source nature means developers can access model weights and code on GitHub for immediate application in internal systems or personal projects.

Best used for

Ideal for developers who need to integrate realistic AI voices into applications, small business owners looking to automate reception tasks, and content creators aiming to produce high-quality audio for marketing materials. Especially valuable for those seeking a free, open-source alternative to premium voice generators with advanced emotion control.

Common actions

generate AI voices

automate audio workflows

create text to speech

control voice emotion

audio generationAI voiceTTStext to speechvoice synthesisfree alternativeopen-sourceWorkflow automation

Capabilities

Key features

Expressive voice generation
Emotion control
Ultra-fast real-time generation
80+ language support
Multi-speaker processing
Open-source model weights

Target Audience

developersmall business ownercontent creatormarketer

Integrations

Not yet documented

Pricing & Plans

Free · Open Source

Open Source

FAQs

What is the license for Fish Audio S2?

Fish Audio S2 is completely free for research, personal projects, and non-commercial use. However, a separate license is required for any commercial applications. Users are encouraged to test the free version for prototyping before considering a commercial upgrade.

How does Fish Audio S2 compare to ElevenLabs?

According to recent benchmark results, Fish Audio S2 delivers voice quality comparable to ElevenLabs. It offers expressive and top-tier audio, emotion control, and ultra-fast generation, positioning it as a strong free alternative to premium services.

Can Fish Audio S2 be used for real-time applications?

Yes, Fish Audio S2 features ultra-fast real-time generation with response times less than 150 milliseconds. This makes it highly suitable for building conversational AI receptionist systems or real-time customer service bots.

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