Head to head

PlayAI vs AssemblyAI

PlayAI (PlayAI) and AssemblyAI (AssemblyAI) both sit in Audio. AssemblyAI is the cheaper entry point at Free tier · from $0.15/1M tok. AssemblyAI shipped more tracked changes in the last 30 days (8 vs 0). Every value below comes from the latest crawl of the vendors' own pages.

AttributePlayAI

PlayAI

AssemblyAI

AssemblyAI

SegmentAudioAudio
VersionPlayDialogUniversal-3.6 Pro Realtime
Entry costFree tier · from $31.2/moFree tier · from $0.15/1M tok
Pricing tiers—Free Credits free · Universal-2 Async STT $0.15 · Universal-Streaming English / Multilingual $0.15 · Universal-3.5 Pro Async STT $0.21 · Universal-3.6 Pro Realtime STT $0.45 · Text-to-Speech (AssemblyAI-TTS-1) $15
Model stackPlayDialogAssemblyAI-TTS-1 · Claude · 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-3-6-pro · universal-3-pro · Universal-3.5 Pro · Universal-3.5 Pro Realtime · Universal-3.6 Pro Realtime · Universal-Streaming English · Universal-Streaming Multilingual
Context window—n/a
Public API
Routes models
Changes / 30d08
OriginGlobalGlobal
CapabilitiesConversational TTS, Voice cloning, AgentsSpeaker diarization, Summarisation, Topic detection, PII redaction, LeMUR framework, Pre-recorded STT, Real-time STT, Voice Agent API
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