Retell AI vs Kore.ai

Detailed side-by-side comparison to help you choose the right tool

Retell AI

🔴Developer

Voice AI Tools

Voice AI platform for building conversational phone agents with human-like speech, ultra-low latency, and natural turn-taking for call center automation.

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Starting Price

$0.07/min

Kore.ai

🟢No Code

Voice AI Tools

Enterprise conversational AI platform for building intelligent virtual assistants with voice, chat, and process automation capabilities.

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Starting Price

Contact

Feature Comparison

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FeatureRetell AIKore.ai
CategoryVoice AI ToolsVoice AI Tools
Pricing Plans11 tiers25 tiers
Starting Price$0.07/minContact
Key Features
  • Real-Time Voice Orchestration (sub-800ms)
  • Natural Turn-Taking & Interruption Handling
  • Function Calling via Webhooks
  • Workflow Runtime
  • Tool and API Connectivity
  • State and Context Handling

Retell AI - Pros & Cons

Pros

  • Ultra-low latency voice responses (sub-800ms) create natural-feeling conversations that don't frustrate callers with awkward pauses
  • Modular pricing with 15+ LLM options and 6 TTS providers lets you precisely optimize cost-quality tradeoffs per agent
  • Free SIP trunking eliminates per-minute telephony charges — significant cost savings for high-volume deployments
  • Built-in production features like batch calling, branded caller ID, PII removal, and AI quality assurance cover real telephony needs
  • Webhook-based function calling enables real-time CRM updates, appointment booking, and database queries during live calls
  • Chat agent support with SMS adds multi-channel capability without needing a separate platform

Cons

  • No self-hosting option — all voice data flows through Retell's cloud infrastructure, which may not meet strict data sovereignty requirements
  • Advertised $0.07/min minimum is misleading — realistic production costs with a capable LLM run $0.13-$0.25/min after all components
  • Enterprise features (HIPAA, SSO, RBAC) require custom pricing with no published rates, making budget planning difficult
  • Younger platform with fewer production case studies and community resources compared to Twilio or Genesys ecosystems

Kore.ai - Pros & Cons

Pros

  • Gartner-recognized leader in enterprise conversational AI
  • Strong voice capabilities with contact center integration
  • Pre-built industry solutions accelerate deployment
  • Comprehensive analytics for measuring ROI
  • 100+ language support for global deployments

Cons

  • Enterprise pricing is not transparent
  • Platform complexity requires significant training investment
  • Smaller community compared to open-source alternatives
  • Implementation typically requires professional services engagement

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🔒 Security & Compliance Comparison

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Security FeatureRetell AIKore.ai
SOC2✅ Yes✅ Yes
GDPR✅ Yes✅ Yes
HIPAA✅ Yes✅ Yes
SSO🏢 Enterprise✅ Yes
Self-Hosted❌ No✅ Yes
On-Prem❌ No✅ Yes
RBAC🏢 Enterprise✅ Yes
Audit Log🏢 Enterprise
Open Source❌ No❌ No
API Key Auth✅ Yes✅ Yes
Encryption at Rest✅ Yes
Encryption in Transit✅ Yes
Data Residency
Data Retentionconfigurable
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