Cartesia vs Gladia: Which Is Better for Your Team in 2026?
Cartesia and Gladia are both used for ai voice agents. Below we compare them on pricing, AI capabilities, compliance, and the use cases each one fits best — all from verified vendor data.
Choose Cartesia if…
- Voice agent platform builders (Vapi, Retell, LiveKit) embedding best-in-class TTS/STT as a component
- Enterprise teams in healthcare and finance who need HIPAA + PCI compliance with sub-100ms latency
- Teams building multilingual agents across 42 languages including Indian-language markets
- Developers who want to own the full stack via Line and avoid LLM and telephony lock-in
Choose Gladia if…
- European companies that need EU data residency, GDPR compliance, and a strong audit trail for regulated industries
- Voice agent builders and meeting assistant platforms that need real-time multilingual STT with bundled speaker diarization and audio intelligence in one call
- Contact center analytics and QA teams processing conversational speech who need high accuracy on accented and multi-speaker audio
- Teams building in French, German, Spanish, or other non-English languages where Deepgram/AssemblyAI accuracy drops
Cartesia vs Gladia: feature comparison
| Feature | Cartesia | Gladia |
|---|---|---|
| At a glance | ||
| Category | AI voice agent platform | Conversation intelligence |
| Best fit | Smb, Mid market, Enterprise | Smb, Mid market, Enterprise |
| Deployment | Cloud, Private cloud, On premise | Cloud |
| Channels | Voice, Web chat | Voice |
| Pricing & ratings | ||
| Starting price | Contact sales | Contact sales |
| Free trial | No | No |
| User rating | — | — |
| AI capabilities | ||
| Autonomous voice agent | Yes | No |
| Real-time agent assist | No | No |
| Conversation intelligence | No | Yes |
| Automated QA | No | No |
| Intelligent routing | No | No |
| Compliance | ||
| SOC 2 Type II | Yes | Yes |
| HIPAA | Yes | Yes |
| PCI DSS | Yes | No |
| GDPR | Yes | Yes |
Cartesia vs Gladia: frequently asked questions
- What is the difference between Cartesia and Gladia?
- Fastest TTS/STT infrastructure in the category — Sonic-3 at 90ms, Ink at 66ms TTCT. Line adds a full agent layer on top. Infrastructure-first but increasingly a finished platform. By contrast, Paris-built STT API with Solaria-1, native real-time (<300ms) and async transcription, 100+ languages, and bundled audio intelligence. Strong GDPR/EU-first story; SOC 2 Type II and HIPAA achieved.
- How much do Cartesia and Gladia cost?
- Both Cartesia and Gladia use quote-based pricing and do not publish standard per-seat rates — contact each vendor's sales team for a quote tailored to your seat count and usage.