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AssemblyAI offers an advanced audio transcription service that uses deep learning to deliver accurate speech-to-text API results for developers.

Entry price
Free
Free plan available
Plans tracked
8
3 add-ons
Pricing changes
18
Latest Aug 24, 2026
Pricing model
Usage-based
Free tier available

Pricing Change History

18 changes
202610 changes
20253 changes
20244 changes

Research Assemblyai's pricing with the Pulse Agent

Ask anything about Assemblyai's plans, packaging shifts, and how it compares across the market — answered live from verified data.

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Current plans

Captured
PlanTypePrice
FreePlanFree
Voice Agent APIPlan$4.5 per hour + $4.5 per hour
Universal-3 ProPlan$0.21 per hour of audio
Universal-Streaming MultilingualPlan$0.15 per hour of audio
Universal-3 Pro StreamingPlan$0.45 per hour of audio
CustomPlanContact
Universal-2Plan$0.15 per hour of audio
Universal-StreamingPlan$0.15 per hour of audio
GuardrailsAdd-on$0.01 per hour (Profanity Filtering)
Speech UnderstandingAdd-on$0.02 per hour (Speaker Identification)
LLM GatewayAdd-on$0.05 per 1M input tokens (varies by model)

Company Facts

Free tierYes
Employees101-1000
Tracked sinceNov 14, 2023
Pricing last seenAug 24, 2026
Websiteassemblyai.com

How Assemblyai compares with its peers

CompanyEntry priceLast change
RRev.io
Rev.io
——
OOtter
Otter
$8.33 /user/mo, billed annuallyJul 13, 2026
MMicrosoft Azure
Microsoft Azure
Free—
IIBM
IBM
$4.24 /client device/moJul 3, 2026
DDeepgram
Deepgram
$333.33 /mo, billed annually + usageSep 21, 2026

Assemblyai pricing FAQ

How much does Assemblyai cost?
Assemblyai prices on usage: the Voice Agent API plan is $4.5 per hour + $4.5 per hour, and the Free plan is free.
Does Assemblyai have a free plan?
Yes. Assemblyai's Free plan is free.
What pricing model does Assemblyai use?
Assemblyai uses usage-based pricing across 8 plans, with a free tier.
When did Assemblyai last change its pricing?
Aug 24, 2026: Assemblyai adds FAQ clarifying Voice Agent API's flat $4.50/hr rate.
How often has Assemblyai changed its pricing?
Pulse has recorded 18 pricing changes for Assemblyai since it started tracking on Nov 14, 2023; the pricing page was last captured on Aug 24, 2026.
Who are Assemblyai's pricing peers?
Pulse compares Assemblyai with Rev.io, Otter, Microsoft Azure, IBM and Deepgram.