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Deepgram Voice Agent API vs Twilio ConversationRelay

Deepgram Voice Agent API and Twilio ConversationRelay are both Realtime Voice Agent APIs, compared here on pricing, compliance, capabilities, and developer experience from structured, cited data - not reviews or paid placement. Twilio ConversationRelay starts lower at $0.07 per minute vs $0.07 for Deepgram Voice Agent API. Twilio ConversationRelay supports webhooks for event-driven integration; the other does not document them.

Comparedby a transparent data-readiness score computed from each API's published, sourced fields. No reviews, no paid placement. How we rank.

Data last verified 2026-06-21, with every field cited on each profile.

Head-to-head, from published, cited fields (auto-generated; no paid placement)
FieldDeepgram Voice Agent APITwilio ConversationRelay
Starting price$0.07 minute$0.07 minute
Pricing modelUsageUsage
Free tier✗✗
Self-serve signup✓✓
SOC 2Type IIType II
HIPAA✓✓
GDPR✓✓
Webhooks✗✓
Sandbox✗✗
Documented actions1623

Full data and citations: Deepgram Voice Agent API · Twilio ConversationRelay. See more Realtime Voice Agent APIs.