Side by side
Retell AI vs Speechmatics | AI Voice Agents
Compare what each tool does, what it costs, and how it fits your workflow.
Designed for
Build human-like voice AI agents in a day
Build smarter AI voice agents with the best speech recognition technology
Primary task
Voice agents
Voice agents
Pricing
Paid · from $0.01
Freemium · Free + from $0.24
Pricing details
from $0.01
Free + from $0.24
Billing cycle
Pay-as-you-go
Pay-as-you-go
API access
Not documented
Not documented
Platforms
Web
Web
Integrations
Not documented
MCP
Source rating
5.0 / 5 · 3 ratings
4.5 / 5 · 12 ratings
Catalog views
1.6k
205k
Estimated monthly traffic
716.9K
262.8K
Catalog imported
30 Aug 2026
30 Aug 2026
Listed strengths
- Can execute complex tasks
- Can follow instructions
- Integrates with any LLMs
- Build, test, deploy, monitor at scale
- Stateful Multi-Prompt Agents
- High real-time transcription accuracy
- Sub-second response time
- Supports 55 languages with accent coverage
- Advanced speaker diarization
- Custom dictionary for domain-specific terms
Listed limitations
- No open source access
- Limited language support
- 800ms Latency
- Requires LLM integration
- Limited template variety
- Primarily focused on speech-to-text, not full conversational AI
- May require developer integration for advanced use cases
- Performance depends on audio quality in extreme conditions
- Some features still maturing (e.g., upcoming pipeline updates)
- Enterprise-level features may be cost-prohibitive for small teams