G2 Vendor Directory

Fish Audio vs. Synthesia

A side-by-side comparison based on G2 review data.

MetricFish Audio

by OpenAudio

Synthesia

by Synthesia

Overall rating4.54.6
Review count1192,855
Ease of use9.39.2
Ease of setup9.19.3
Quality of support8.69.0
Meets requirements9.08.9
NPS70.33898378.533662
Small Business98.3%67.9%
Mid-Market1.7%18.8%
Enterprise0.0%13.2%
Total page views6,6039,909
Total LLM citations1,735138,653

Fish Audio

Fish Audio is an AI voice platform for creators, developers, and enterprises - bringing together text-to-speech, voice cloning, voice design, and audio APIs to produce natural, expressive, and controllable speech. At its core is s2.1-pro, built for emotionally expressive speech across 83 languages with production-grade speed and reliability, including Time-to-First-Audio as low as 70ms. Teams use Fish Audio for narration, dubbing, localization, AI characters, conversational agents, call centers, and other integrations where TTS is a core component.

Pros

    Synthesia

    Synthesia is the world's leading AI video platform, trusted by 90% of the Fortune 100. In one platform, teams create with Synthesia Studio and run two-way conversations with AI Avatars through Sessions. Together they scale training, practice, insight, and guidance across the organization. Create video from any input: Type or paste a script, generate one from a prompt, or turn a PowerPoint, PDF, Word doc, link, or template into a polished, publish-ready video in minutes.

    Pros

    • Ease of Use
    • Quality
    • Realistic Avatars
    • Easy Creation
    • Video Creation
    • Features