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AssemblyAI

by AssemblyAI

SaveOpen AssemblyAI

The Launchpad take

Verdict

AI transcription and audio intelligence API

Speech-to-text; speaker diarization; content moderation; summarization (LeMUR); sentiment analysis

Best for

Developers building transcriptionpodcast platformsmedia companiescall analytics

Quick facts

Free tier
Free: limited hours; basic transcription and AI features
Starting price
Universal-2 $0.15/hr
Platforms
api
Company
AssemblyAI
Ready to try AssemblyAI? Start with the getting-started guide.

Pricing

PlanPrice
Pay-as-you-go pre-recordedUniversal-2 $0.15/hr
Universal-3.5 Pro$0.21/hr
$50 free credits on signup$50

Prices checked 2026-10-14

Key capabilities

Works with

  • Audio (speech)

Outputs

  • JSON transcripts
  • SRT
  • VTT
  • paragraphs
  • highlights

Get it

How to use AssemblyAI on phones and tablets.

  • Mobile web: Works in a mobile browser (responsive or dedicated mobile site).

Technical details

Offline
No
API
Yes
Languages
Multilingual (many languages supported)
Difficulty
Beginner-friendly
Privacy
High
Time to productivity
1 hour
Upgrade when
Hour limits; LeMUR (LLM for audio); advanced AI features; enterprise SLA; custom vocabulary
Integrations
Python/JS/Go/Ruby SDKs, Zapier, REST API, webhooks
Sources & notes
  • Checked 2026-10-14 (from catalog copy)

Alternatives

Deepgram

by Deepgram

AI speech-to-text and text-to-speech API

FreemiumFree tier available with limits; paid plans unlock more.Beginner-friendlyWeb

Good for AI APIs & Developer Services

Free-plan details

$200 credit for new accounts; pay-per-use after

Meet the tool

Related in AI APIs & Developer Services

Tutorials