Estimated Belliste score, based on the available capabilities, quality, features and pricing information. It is an indicative profile estimate, not an independent benchmark.
How this profile estimate is calculated
Capabilities contribute 35%, quality wording 30%, listed features 20%, and pricing 15% when available. When capability fields are absent, specialization breadth supplies a 25% fallback. Missing categories are omitted and the remaining weights are rescaled. The estimate uses each model’s own published profile; it does not measure answer accuracy or replace a hands-on test.
OverviewSpeechifyFish Audio S2 Pro
PriceFree API · Pay-as-you-go from $10/1M charsFree tier available · API from $15/1M UTF-8 bytes
SpecializationTTS · Voice Cloning · Dubbing · Real-time AudioTTS · Voice Cloning · Multilingual Speech · Emotion Control · Real-time Audio
QualityNatural production speech with low-latency streaming and multilingual cloning.Highly expressive speech with fine-grained control over prosody, emotion, pacing and delivery.
FeaturesVoice Cloning · API · Streaming · 50+ Languages · 1,000+ VoicesVoice Cloning · API · Streaming · Multilingual · Emotion Control
Capabilities
15 specifications +
SpecificationSpeechifyFish Audio S2 Pro
Number of voices1,000+Not specified
Text-to-SpeechYes · Simba modelsYes
Voice cloningZero-shot and fine-tunedInstant voice cloning supported
DubbingDubbing Studio and enterprise dubbingSupported through Fish Audio workflows
Supported languagesSimba 3.0: 6 languages / 7 locales self-serve; Simba 3.2: English80+ languages
Voice conversionVoice Changer in StudioNot listed as a core S2 Pro capability
Real-time audioStreaming API · ~300 msYes · streaming
Emotion controlEmotion control and SSMLOpen-ended natural-language direction tags
Voice designNot specifiedAvailable through Fish Audio platform plans
Speech-to-SpeechVoice Changer in StudioNot listed as a core S2 Pro capability
Voice library1,000+ preset voicesAvailable through Fish Audio platform
Emotion ControlNot specified15,000+ open-ended direction tags
Number of Voices1,000+Not specified
Voice CloningZero-shot and fine-tunedInstant voice cloning
Voice DesignNot specifiedAvailable on platform plans
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