Head to head

Otter.ai vs AssemblyAI

Otter.ai (Otter.ai) 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.

AttributeOtter.ai

Otter.ai

AssemblyAI

AssemblyAI

SegmentAudioAudio
Version2025Universal-3.6 Pro Realtime
Entry costFree tier · from $16.99/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 stackGPT · in-house ASRAssemblyAI-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
CapabilitiesLive transcription, Meeting agent, SummariesSpeaker diarization, Summarisation, Topic detection, PII redaction, LeMUR framework, Pre-recorded STT, Real-time STT, Voice Agent API
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