Head to head

Fish Audio vs AssemblyAI

Fish Audio (Fish Audio) and AssemblyAI (AssemblyAI) both sit in Audio. AssemblyAI shipped more tracked changes in the last 30 days (5 vs 0). Every value below comes from the latest crawl of the vendors' own pages.

AttributeFish Audio

Fish Audio

AssemblyAI

AssemblyAI

SegmentAudioAudio
VersionS1Universal-3.5 Pro
Entry costOpen weights; API from $15/M charsFree tier with $50 free credits, then pay-as-you-go starting at $0.15/hr for pre-recorded STT (Universal-2)
Pricing tiersFree Credits free
Model stackFish Speech S1Claude · Claude 4.6 Sonnet · Claude 4.8 Opus · Gemini 2.5 Pro · Gemini 3.5 Flash · GPT-5.5 · Qwen3 Next 80B A3B · u3-rt-pro · Universal-2 · universal-3-pro · Universal-3.5 Pro · Universal-3.5 Pro Realtime · Universal-Streaming English · Universal-Streaming Multilingual
Context windown/a
Public API
Routes models
Changes / 30d05
OriginChinaGlobal
CapabilitiesVoice cloning, Multilingual, Self-hostSpeaker diarization, Summarisation, Topic detection, PII redaction, LeMUR framework, Pre-recorded STT, Real-time STT, Voice Agent API
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