Head to head

Fireflies.ai vs AssemblyAI

Fireflies.ai (Fireflies.ai) and AssemblyAI (AssemblyAI) both sit in Audio. AssemblyAI is the cheaper entry point at Free tier with $50 free credits, then pay-as-you-go starting at $0.15/hr for pre-recorded STT (Universal-2). 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.

AttributeFireflies.ai

Fireflies.ai

AssemblyAI

AssemblyAI

SegmentAudioAudio
Version2025Universal-3.5 Pro
Entry costFree tier · from $18/moFree 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 stackfrontier LLM · in-house ASRClaude · 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
OriginGlobalGlobal
CapabilitiesNotetaker, Topic trackers, CRM syncSpeaker diarization, Summarisation, Topic detection, PII redaction, LeMUR framework, Pre-recorded STT, Real-time STT, Voice Agent API
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