AssemblyAI vs Rev AI

AssemblyAI9.0Visit Rev AI8.6Visit

Higher score AssemblyAI #3 in Speech-to-Text Software 9.0/10 Paid ✓ 2 of 5 features Visit AssemblyAI

vs

Rev AI #5 in Speech-to-Text Software 8.6/10 Paid ✓ 2 of 5 features Visit Rev AI

• AssemblyAI fits best

  API builders needing rich speech intelligence

• Rev AI fits best

  Cost-conscious API transcription users

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature	AssemblyAI 9.0/10 Visit ↗	Rev AI 8.6/10 Visit ↗
At a glance
Editor score	9.0	8.6
Ranking	#3 in Speech-to-Text Software	#5 in Speech-to-Text Software
Best for	API builders needing rich speech intelligence	Cost-conscious API transcription users
Pricing model	Paid	Paid
Starting price	$0.15/unit usage-based	$0.002/unit usage-based
Free plan	—	—
Free trial	—	—
Deployment	Cloud, Self-hosted	Cloud, Self-hosted
Platforms	Web	Web
Support	Email, Live chat, Community, Docs	Email, Live chat, Tickets, Docs
Compliance	SOC 2	SOC 2, HIPAA
Integrations	20 integrations	4 integrations
Built for	Small business, Mid-market, Enterprise	Small business, Mid-market, Enterprise
Features AssemblyAI 2/5 · Rev AI 2/5
Speaker labels	✓	✓
API access	✓	✓
Offline transcription	Not checked yet	Not checked yet
Mobile apps	Not checked yet	Not checked yet
Desktop apps	Not checked yet	Not checked yet
Specs
Capture modes	Not checked yet	Not checked yet
Supported languages	99 (best)	1
Our review
Pros	99 prerecorded transcription languages with Universal-2 Realtime WebSocket streaming plus diarization and word timestamps Translation, sentiment, entities, and key phrase analysis	Starts at $0.005 per minute with pay-as-you-go pricing Supports streaming, diarization, timestamps, custom vocabulary, and webhooks Offers JSON, plain text, SRT, VTT, and on-premises Docker deployment
Cons	API-only platform with no listed non-API application Free transcription is capped at 185 prerecorded hours Pay-as-you-go pricing may require usage monitoring	The lowest-priced transcription plans focus on English All listed plans have a 15-second minimum Pricing is usage-based rather than monthly subscription pricing
Our verdict	AssemblyAI provides APIs that convert prerecorded and streaming audio into text and structured speech data. It is designed for developers and organizations building voice applications, including meeting transcription, call analytics, AI… Read the review →	Rev AI is a developer-focused speech-to-text API for organizations that need transcripts from prerecorded audio and video or real-time streams. It supports asynchronous and streaming transcription, with features suited to media,… Read the review →

Strengths and trade-offs

• AssemblyAI — where it wins

  • 99 prerecorded transcription languages with Universal-2
  • Realtime WebSocket streaming plus diarization and word timestamps
  • Translation, sentiment, entities, and key phrase analysis

  Where it doesn't

  • API-only platform with no listed non-API application
  • Free transcription is capped at 185 prerecorded hours
  • Pay-as-you-go pricing may require usage monitoring

• Rev AI — where it wins

  • Starts at $0.005 per minute with pay-as-you-go pricing
  • Supports streaming, diarization, timestamps, custom vocabulary, and webhooks
  • Offers JSON, plain text, SRT, VTT, and on-premises Docker deployment

  Where it doesn't

  • The lowest-priced transcription plans focus on English
  • All listed plans have a 15-second minimum
  • Pricing is usage-based rather than monthly subscription pricing

• AssemblyAI9.0/10 · Paid

  A developer-focused API with transcription, streaming, and speech intelligence at $0.15/hour.

  Visit AssemblyAIFull verdict →
• Rev AI8.6/10 · Paid

  A usage-priced API with strong transcript controls, focused mainly on English at entry pricing.

  Visit Rev AIFull verdict →