kitio.aiAssemblyAI vs Rev AI
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. AssemblyAI starts at See pricing page and Rev AI starts at See pricing page. Check both pricing pages for current plans.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Batch and streaming transcription
- Speaker diarization
- PII redaction
- Sentiment and topic detection
- LLM features over transcripts
- Async speech-to-text
- Streaming transcription
- Language identification
- Sentiment and topic extraction
- Human transcription option
- HIPAA support
| Feature | AssemblyAI | Rev AI |
|---|---|---|
| Best for | Speech AI API for transcription, diarization and audio understanding | Speech-to-text API for async and streaming transcription in 57+ languages |
| Category | Audio & voice | Audio & voice |
| Pricing model | Freemium | Freemium |
| Starting price | See pricing page | See pricing page |
| Free plan | Yes | Yes |
| Made by | AssemblyAI | Rev |
| Based in | United States | United States |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
AssemblyAI starts at See pricing page and Rev AI starts at See pricing page. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
3 plans
Free
Free
- Try the API for free
- No commitment
Pay as you go
$0.21 / hr (Universal-3.5 Pro)
- Universal-2 at $0.15/hr
- Streaming from $0.45/hr
- Add-ons billed per hour
Custom
Custom
- Custom rate limits
- Higher concurrency
- Enterprise-grade flexibility
5 plans
Whisper Large
$0.005 / minute
- Open-source Whisper model
Reverb (English)
$0.20 / hour
- English transcription
- 15-second minimum
Reverb Foreign Language
$0.30 / hour
- Spanish, French, Chinese and 50+ more
Human Transcription
$1.99 / minute
- Transcripts by human transcribers
Enterprise
Contact sales
- Volume pricing
- Dedicated account manager
Prices in USD, checked Oct 28, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
AssemblyAI
- High accuracy on English
- Rich analysis features
- Clear documentation
- Add-on features cost extra
- No end-user app
Rev AI
- Low per-hour transcription rates
- Human transcription in the same API
- Supports 57+ languages
- Usage costs vary by model
- Insight APIs billed separately
- Requires developer integration
Which one should you choose?
Choose AssemblyAI if you want:
- High accuracy on English
- Rich analysis features
- Clear documentation
Watch out: add-on features cost extra.
Choose Rev AI if you want:
- Low per-hour transcription rates
- Human transcription in the same API
- Supports 57+ languages
Watch out: usage costs vary by model.
AssemblyAI vs Rev AI FAQ
What is the difference between AssemblyAI and Rev AI?
AssemblyAI: Speech AI API for transcription, diarization and audio understanding. Rev AI: Speech-to-text API for async and streaming transcription in 57+ languages. Both are audio & voice tools.
Is AssemblyAI or Rev AI cheaper?
AssemblyAI starts at See pricing page and Rev AI starts at See pricing page. Check both pricing pages for current plans.
Do AssemblyAI and Rev AI have free plans?
AssemblyAI: Yes. Rev AI: Yes.
Who makes AssemblyAI?
AssemblyAI is made by AssemblyAI, based in United States.
Who makes Rev AI?
Rev AI is made by Rev, based in United States.
Which should I choose, AssemblyAI or Rev AI?
Choose AssemblyAI if you value high accuracy on english and rich analysis features. Choose Rev AI if you value low per-hour transcription rates and human transcription in the same api.