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.
OverviewChatterbox MultilingualFish Audio S2 Pro
PriceFree · Open source (MIT)Free tier available · API from $15/1M UTF-8 bytes
SpecializationVoice Cloning · Multilingual TTS · Voice Conversion · Emotion Control · Voice AgentsTTS · Voice Cloning · Multilingual Speech · Emotion Control · Real-time Audio
QualityNatural multilingual speech with expressive control and strong speaker similarity.Highly expressive speech with fine-grained control over prosody, emotion, pacing and delivery.
FeaturesZero-shot Voice Cloning · Voice Conversion · Multilingual · Emotion Control · Self-hostingVoice Cloning · API · Streaming · Multilingual · Emotion Control
Capabilities
15 specifications +
SpecificationChatterbox MultilingualFish Audio S2 Pro
Number of voicesNot specifiedNot specified
Text-to-SpeechYesYes
Voice cloningZero-shotInstant voice cloning supported
DubbingNot specifiedSupported through Fish Audio workflows
Supported languages23+ languages80+ languages
Voice conversionYesNot listed as a core S2 Pro capability
Real-time audioFaster-than-realtime inferenceYes · streaming
Emotion controlExaggeration / intensity controlOpen-ended natural-language direction tags
Voice designNot specifiedAvailable through Fish Audio platform plans
Speech-to-SpeechNot specifiedNot listed as a core S2 Pro capability
Voice libraryNot specifiedAvailable through Fish Audio platform
Emotion ControlExaggeration / emotion intensity control15,000+ open-ended direction tags
Voice CloningZero-shot voice cloningInstant voice cloning
Voice ConversionYesNot specified
Voice DesignNot specifiedAvailable on platform plans
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