AssemblyAI vs Sema4.ai
Side-by-side comparison of features, pricing, and integrations.
Quick Verdict
AssemblyAI offers more features (38 vs 21) and more integrations (21 vs 11). Both start at Free. AssemblyAI has 38 unique features while Sema4.ai has 21 unique features, with 0 features in common.
| AssemblyAI | Sema4.ai | |
|---|---|---|
| Category | AI & Machine Learning | AI & Machine Learning |
| Total Features | 38 | 21 |
| AI-Powered Features | 28 | 10 |
| Starting Price | Free | Free |
| Pricing Tiers | 3 | 3 |
| Integrations | 21 | 11 |
| Shared Features | 0 | |
| Shared Integrations | 0 | |
| Data Quality | 90% | 75% |
Feature Comparison by Category
AI (0 vs 2)
| Feature | AssemblyAI | Sema4.ai |
|---|---|---|
| Document Intelligence | ||
| Multi-LLM Support |
AI Integration (1 vs 0)
| Feature | AssemblyAI | Sema4.ai |
|---|---|---|
| LLM Gateway |
AI Model (3 vs 0)
| Feature | AssemblyAI | Sema4.ai |
|---|---|---|
| Universal-2 Model | ||
| Universal-3 Pro Model | ||
| Universal-Streaming Model |
Applications (1 vs 0)
| Feature | AssemblyAI | Sema4.ai |
|---|---|---|
| Voice Agent Support |
Automation (0 vs 1)
| Feature | AssemblyAI | Sema4.ai |
|---|---|---|
| Always On |
Compliance (2 vs 0)
| Feature | AssemblyAI | Sema4.ai |
|---|---|---|
| EU Data Residency | ||
| HIPAA Compliance |
Content Moderation (2 vs 0)
| Feature | AssemblyAI | Sema4.ai |
|---|---|---|
| Content Moderation | ||
| Profanity Filtering |
Core Transcription (2 vs 0)
| Feature | AssemblyAI | Sema4.ai |
|---|---|---|
| Speech-to-Text (Pre-recorded) | ||
| Streaming Speech-to-Text |
Customization (3 vs 0)
| Feature | AssemblyAI | Sema4.ai |
|---|---|---|
| Custom Spelling | ||
| Keyterms Prompting | ||
| Plain Language Instructions |
Data (0 vs 1)
| Feature | AssemblyAI | Sema4.ai |
|---|---|---|
| Enterprise Data Access |
Developer Tools (2 vs 0)
| Feature | AssemblyAI | Sema4.ai |
|---|---|---|
| API Documentation | ||
| No-code Playground |
Development (0 vs 2)
| Feature | AssemblyAI | Sema4.ai |
|---|---|---|
| Runbooks | ||
| Studio & SDK |
Infrastructure (1 vs 3)
| Feature | AssemblyAI | Sema4.ai |
|---|---|---|
| Multi-Region Deployments | ||
| Regional Control Rooms | ||
| Self-Hosted Worker Groups | ||
| Self-hosted Deployments |
Integration (1 vs 3)
| Feature | AssemblyAI | Sema4.ai |
|---|---|---|
| AI Actions | ||
| API Access | ||
| Docker Desktop Integration | ||
| LiveKit SDK Integration |
Localization (1 vs 0)
| Feature | AssemblyAI | Sema4.ai |
|---|---|---|
| Multi-language Streaming |
Management (0 vs 1)
| Feature | AssemblyAI | Sema4.ai |
|---|---|---|
| Control Room |
Performance (0 vs 1)
| Feature | AssemblyAI | Sema4.ai |
|---|---|---|
| Parallel Execution |
Security (0 vs 3)
| Feature | AssemblyAI | Sema4.ai |
|---|---|---|
| Custom RBAC | ||
| SSO Integration | ||
| VPC Deployment |
Security/Privacy (2 vs 0)
| Feature | AssemblyAI | Sema4.ai |
|---|---|---|
| PII Audio Redaction | ||
| PII Text Redaction |
Speech Processing (1 vs 0)
| Feature | AssemblyAI | Sema4.ai |
|---|---|---|
| End-of-Turn Detection |
Speech Understanding (6 vs 0)
| Feature | AssemblyAI | Sema4.ai |
|---|---|---|
| Entity Detection | ||
| Language Detection | ||
| Sentiment Analysis | ||
| Speaker Diarization | ||
| Speaker Identification | ||
| Translation |
Support (2 vs 0)
| Feature | AssemblyAI | Sema4.ai |
|---|---|---|
| Custom SLAs and SLOs | ||
| Dedicated Technical Support |
Text Analysis (3 vs 0)
| Feature | AssemblyAI | Sema4.ai |
|---|---|---|
| Filler Words Detection | ||
| Key Phrases | ||
| Topic Detection |
Text Processing (5 vs 0)
| Feature | AssemblyAI | Sema4.ai |
|---|---|---|
| Auto Chapters | ||
| Auto Punctuation and Casing | ||
| Custom Formatting | ||
| Summarization | ||
| Word-level Timestamps |
Use Case (0 vs 3)
| Feature | AssemblyAI | Sema4.ai |
|---|---|---|
| Invoice Reconciliation | ||
| Receivables Matching | ||
| Regulatory Compliance |
User Interface (0 vs 1)
| Feature | AssemblyAI | Sema4.ai |
|---|---|---|
| Work Room |
Unique Features
Only in AssemblyAI (38)
LLM Gateway
Universal-2 Model
Universal-3 Pro Model
Universal-Streaming Model
Voice Agent Support
EU Data Residency
HIPAA Compliance
Content Moderation
Profanity Filtering
Speech-to-Text (Pre-recorded)
Streaming Speech-to-Text
Custom Spelling
Keyterms Prompting
Plain Language Instructions
API Documentation
No-code Playground
Self-hosted Deployments
LiveKit SDK Integration
Multi-language Streaming
PII Audio Redaction
+ 18 more unique features
Only in Sema4.ai (21)
Document Intelligence
Multi-LLM Support
Always On
Enterprise Data Access
Runbooks
Studio & SDK
Multi-Region Deployments
Regional Control Rooms
Self-Hosted Worker Groups
AI Actions
API Access
Docker Desktop Integration
Control Room
Parallel Execution
Custom RBAC
SSO Integration
VPC Deployment
Invoice Reconciliation
Receivables Matching
Regulatory Compliance
+ 1 more unique features
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