AssemblyAI vs Speechmatics
Side-by-side comparison of features, pricing, and integrations.
Quick Verdict
AssemblyAI offers more features (38 vs 35) and more integrations (21 vs 3). Both start at Free. AssemblyAI has 36 unique features while Speechmatics has 33 unique features, with 2 features in common.
| AssemblyAI | Speechmatics | |
|---|---|---|
| Category | AI & Machine Learning | AI & Machine Learning |
| Total Features | 38 | 35 |
| AI-Powered Features | 28 | 21 |
| Starting Price | Free | Free |
| Pricing Tiers | 3 | 3 |
| Integrations | 21 | 3 |
| Shared Features | 2 | |
| Shared Integrations | 0 | |
| Data Quality | 90% | 80% |
Feature Comparison by Category
AI Customization (0 vs 1)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| Custom Models |
AI Integration (1 vs 0)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| LLM Gateway |
AI Model (3 vs 0)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| Universal-2 Model | ||
| Universal-3 Pro Model | ||
| Universal-Streaming Model |
Applications (1 vs 0)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| Voice Agent Support |
Batch Processing (0 vs 1)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| File Jobs Processing |
Broadcasting (0 vs 1)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| Live Captioning |
Compliance (2 vs 0)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| EU Data Residency | ||
| HIPAA Compliance |
Contact Center (0 vs 1)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| Contact Center Analytics |
Content Moderation (2 vs 0)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| Content Moderation | ||
| Profanity Filtering |
Core API (0 vs 2)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| Speech-to-Text | ||
| Text-to-Speech |
Core Transcription (2 vs 0)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| Speech-to-Text (Pre-recorded) | ||
| Streaming Speech-to-Text |
Customization (3 vs 2)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| Custom Spelling | ||
| Custom Vocabularies | ||
| Formatting Rules | ||
| Keyterms Prompting | ||
| Plain Language Instructions |
Deployment (0 vs 4)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| Cloud Deployment | ||
| Multi-Region Cloud Options | ||
| On-Device Deployment | ||
| On-Premises Deployment |
Developer Tools (2 vs 2)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| API Documentation | ||
| Flexible API | ||
| No-code Playground |
Domain-Specific (0 vs 1)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| Medical Model |
Infrastructure (1 vs 0)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| Self-hosted Deployments |
Integration (1 vs 0)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| LiveKit SDK Integration |
Integrations (0 vs 1)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| Native Integrations |
Language Support (0 vs 2)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| Custom Language Development | ||
| Multilingual Support |
Localization (1 vs 0)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| Multi-language Streaming |
Machine Learning (0 vs 1)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| Model Training |
Medical (0 vs 1)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| Ambient Scribe |
Privacy (0 vs 1)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| No Data Logging |
Real-time Processing (0 vs 1)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| Live Transcription |
Scalability (0 vs 1)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| Concurrent Real-Time Sessions |
Security (0 vs 1)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| Data Encryption |
Security & Compliance (0 vs 4)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| GDPR Compliance | ||
| HIPAA Compliance | ||
| ISO 27001 Compliance | ||
| SOC 2 Type II Certification |
Security/Privacy (2 vs 0)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| PII Audio Redaction | ||
| PII Text Redaction |
Speech Processing (1 vs 0)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| End-of-Turn Detection |
Speech Understanding (6 vs 0)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| Entity Detection | ||
| Language Detection | ||
| Sentiment Analysis | ||
| Speaker Diarization | ||
| Speaker Identification | ||
| Translation |
Support (2 vs 0)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| Custom SLAs and SLOs | ||
| Dedicated Technical Support |
Text Analysis (3 vs 0)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| Filler Words Detection | ||
| Key Phrases | ||
| Topic Detection |
Text Processing (5 vs 0)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| Auto Chapters | ||
| Auto Punctuation and Casing | ||
| Custom Formatting | ||
| Summarization | ||
| Word-level Timestamps |
Transcription (0 vs 4)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| Audio Alignment | ||
| Enhanced Accuracy Model | ||
| Multi-Speaker Recognition | ||
| Standard Accuracy Model |
Translation (0 vs 1)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| AI Translation |
Voice AI (0 vs 1)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| Voice AI Agents |
Voice Customization (0 vs 1)
| Feature | AssemblyAI | Speechmatics |
|---|---|---|
| Custom Voice Development |
Unique Features
Only in AssemblyAI (36)
LLM Gateway
Universal-2 Model
Universal-3 Pro Model
Universal-Streaming Model
Voice Agent Support
EU Data Residency
Content Moderation
Profanity Filtering
Speech-to-Text (Pre-recorded)
Streaming Speech-to-Text
Custom Spelling
Keyterms Prompting
Plain Language Instructions
No-code Playground
Self-hosted Deployments
LiveKit SDK Integration
Multi-language Streaming
PII Audio Redaction
PII Text Redaction
End-of-Turn Detection
+ 16 more unique features
Only in Speechmatics (33)
Custom Models
File Jobs Processing
Live Captioning
Contact Center Analytics
Speech-to-Text
Text-to-Speech
Custom Vocabularies
Formatting Rules
Cloud Deployment
Multi-Region Cloud Options
On-Device Deployment
On-Premises Deployment
Flexible API
Medical Model
Native Integrations
Custom Language Development
Multilingual Support
Model Training
Ambient Scribe
No Data Logging
+ 13 more unique features
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