Deepgram Voice Agent API

Best for: Regulated or enterprise workloads - compliance attestations and an enterprise plan; AI agents and automation - an agent-ready surface (MCP / llms.txt); Teams needing broad API coverage out of the box

Avoid if: You want to try it free before paying

Pricing model

Usage-based [2]deepgram.com/pricing“Voice Agent API ranges from $0.050–$0.163/minute depending on tier and features (websocket connection time basis).”

Published pricing

✓ Yes [3]deepgram.com/pricing“Standard: $0.075/min … Custom - BYO LLM + TTS: $0.050/min … Advanced: $0.163/min”

Free tier

✗ No [4]deepgram.com/pricing“New users receive $200 free credit upon signup with no credit card required for the Pay As You Go plan.”

Self-serve signup

✓ Yes [5]deepgram.com/pricing“$200 Free Credit — no credit card required — then pay-as-you-go”

Requires sales call

✗ No

Enterprise plan

✓ Yes [6]deepgram.com/pricing“Enterprise: Custom pricing for large-volume deployments”

• Outbound calling
• BYO models
• Multilingual

Supported actions

realtime_conversation, speech_to_speech, inbound_telephony, outbound_telephony, function_calling, interruption_handling, byo_llm, byo_voice, multi_agent_orchestration, call_recording, web_widget, tool_calling, message_injection, dynamic_settings_update, turn_taking_prediction, barge_in_detection [7]developers.deepgram.com/docs/voice-agent-feature-overview“Function Call Request and Function Call Response capabilities”deepgram.com/product/voice-agent-api“Built-in barge-in detection, turn-taking prediction, function calling, and mid-session control for smooth interactions without pauses or interruptions.”

Regions

United States, European Union, Australia [8]developers.deepgram.com/trust-security/data-privacy-compliance“GDPR ready with EU-specific endpoint at api.eu.deepgram.com … AU-specific endpoint at api.au.deepgram.com running on AWS Sydney infrastructure”

Languages

English, Spanish, French, German, Hindi, Russian, Portuguese, Japanese, Italian, Dutch [9]developers.deepgram.com/docs/models-languages-overview“flux-general-multi supports English, Spanish, French, German, Hindi, Russian, Portuguese, Japanese, Italian, and Dutch”

Input types

audio stream, WebSocket, PSTN phone call (via Twilio), web widget

Output types

audio stream, call transcript, function call events, WebSocket events, structured call summary

Webhooks

✗ No [10]developers.deepgram.com/reference/voice-agent/voice-agent“The Voice Agent API enables you to build real-time, interactive voice agents powered by Deepgram's speech-to-text, LLM integration, and text-to-speech, all over a single WebSocket connection.”

Sandbox / test mode

✗ No [11]deepgram.com/product/voice-agent-api“Free trial option: "Try it Free" links to the playground — this is a live environment trial, not a dedicated sandbox or test-mode environment.”

SDK languages

Python, Node.js, Go, C#/.NET [12]developers.deepgram.com/home“Python SDK, JavaScript SDK, Go SDK, .NET SDK — four primary SDK implementations listed”

MCP server

✓ Yes [13]developers.deepgram.com/developer-tools/cli/mcp-server“The dg CLI includes a built-in MCP server that gives AI coding tools direct access to Deepgram APIs.”

SOC 2

SOC 2 Type II [14]developers.deepgram.com/trust-security/data-privacy-compliance“Deepgram has achieved SOC 2 Type 1 and Type 2 certification.”

HIPAA

✓ Yes [15]developers.deepgram.com/trust-security/security-policy“We maintain HIPAA Compliance and are PCI Compliant; thus, we adhere to the requirements throughout the year”developers.deepgram.com/trust-security/data-privacy-compliance“Deepgram is considered a Business Associate as defined by the US HIPAA legislation.”

GDPR

✓ Yes [16]developers.deepgram.com/trust-security/data-privacy-compliance“Deepgram is GDPR ready.”

ISO 27001

✗ No [17]developers.deepgram.com/trust-security/data-privacy-compliance“Deepgram has achieved SOC 2 Type 1 and Type 2 certification. [ISO 27001 is not mentioned on this page or the security policy page.]”

PCI DSS

✓ Yes [18]developers.deepgram.com/trust-security/security-policy“We maintain HIPAA Compliance and are PCI Compliant; thus, we adhere to the requirements throughout the year”developers.deepgram.com/trust-security/data-privacy-compliance“We are PCI compliant, and perform a yearly review of our standing within the framework.”

Published SLA

✓ Yes [19]deepgram.com/dedicated“99.9% uptime, backed by enterprise-grade SLAs”

Rate limits

Voice Agent API: Pay As You Go - up to 45 concurrent connections (North America, Europe, Australia); Growth - up to 60 concurrent connections (North America), up to 45 (Europe/Australia); Enterprise - starting at 100 concurrent connections (all regions). Rate limits apply per project. [20]developers.deepgram.com/reference/api-rate-limits“Pay as You Go: Up to 45 concurrent connections (North America, Europe, Australia); Growth: North America Up to 60 concurrent connections, Europe/Australia Up to 45; Enterprise: Starting at 100 concurrent connections”

Known restrictions

Telephony (PSTN/inbound/outbound) requires integration with Twilio or Amazon Connect - not natively included, BYO-LLM requires custom endpoint configuration for providers other than OpenAI and Anthropic (e.g. Google, Groq, AWS Bedrock), $200 free credit is a one-time trial credit, not a recurring free tier, Flux STT model (optimized for voice agents) supports only 10 languages in multilingual mode (not all 45+ Nova-3 languages), System prompt limit of 25,000 characters for managed LLMs, Growth plan requires $4,000+/year annual prepaid commitment, SLA (99.9% uptime) is only published for dedicated/enterprise deployments, not standard Pay As You Go

• Docs
• llms.txt
• Changelog
• Status page

Docs rendering: static · llms.txt present

API style

websocket

Base URL

wss://agent.deepgram.com/v1/agent/converse

Version

v1

Versioning

url

Stability

ga

Auth methods

api_key

Error format

vendor-specific

Rate limit

45 / concurrent calls

SDKs

• Python deepgram-sdk · repo
• Node.js @deepgram/sdk · repo
• Go github.com/deepgram/deepgram-go-sdk/v3 · repo
• C#/.NET Deepgram · repo

• Auth docs
• Quickstart
• MCP server

Launched

2015-01-01

GA

2025-06-16

Notable customers

Aircall, Jack in the Box, OpenPhone, NASA, Five9, IBM, Telnyx

• ElevenLabs Conversational AI (ElevenAgents)

  "Deploy human-like Conversational AI in minutes. ElevenLabs delivers low latency interactions in dozens of languages with enterprise-grade security."

  Hybrid · free tier · public pricing · self-serve

• OpenAI Realtime API (gpt-realtime)

  "The Realtime API enables low-latency, bidirectional audio communication for building voice agents and audio applications."

  Usage · public pricing · self-serve

• Telnyx Voice AI Agents

  "Carrier-grade Voice AI from Telnyx. Sub-200ms latency, 80+ languages, A-level STIR/SHAKEN attestation, and one platform that replaces 5 vendors."

  Usage · public pricing · self-serve

• Twilio ConversationRelay

  "Twilio's Conversation Relay empowers you to build powerful AI voice experiences for your customers. Let Twilio handle the heavy lifting of speech recognition, text-to-speech, and voice synthesis."

  Usage · public pricing · self-serve

• Vapi

  "Build and deploy voice agents that deliver the outcomes you want at the scale your customers need."

  Usage · free tier · public pricing · self-serve

• Cartesia Line

  "Turn any text agent into a world-class conversational agent, deployed anywhere."

  Hybrid · free tier · public pricing · self-serve

Deepgram Voice Agent API alternatives · Deepgram Voice Agent API vs ElevenLabs Conversational AI (ElevenAgents) · All Realtime Voice Agent APIs APIs

Each field above carries a numbered source - hover for a preview, click to jump here.

1. ↑Description: deepgram.com
2. ↑Pricing model: deepgram.com
3. ↑Published pricing: deepgram.com
4. ↑Free tier: deepgram.com
5. ↑Self-serve signup: deepgram.com
6. ↑Enterprise plan: deepgram.com
7. ↑Supported actions: developers.deepgram.com · deepgram.com
8. ↑Regions: developers.deepgram.com
9. ↑Languages: developers.deepgram.com
10. ↑Webhooks: developers.deepgram.com
11. ↑Sandbox: deepgram.com
12. ↑SDK languages: developers.deepgram.com
13. ↑MCP server: developers.deepgram.com
14. ↑SOC 2: developers.deepgram.com
15. ↑HIPAA: developers.deepgram.com · developers.deepgram.com
16. ↑GDPR: developers.deepgram.com
17. ↑ISO 27001: developers.deepgram.com
18. ↑PCI DSS: developers.deepgram.com · developers.deepgram.com
19. ↑Published SLA: deepgram.com
20. ↑Rate limits: developers.deepgram.com

Every field change, who made it, and when - from our audited data pipeline and editors.

1. 2026-06-21 Capabilities: {} → {"byo_models":true,"multilingual":true,"outbound_calling":true}
2. 2026-06-21 Summary Md: (none) → Deepgram Voice Agent API is a single WebSocket-based interface for building rea…
3. 2026-06-21 Best For: (none) → Regulated or enterprise workloads - compliance attestations and an enterprise p…
4. 2026-06-21 Avoid If: (none) → You want to try it free before paying
5. 2026-06-21 Scoring Methodology: (none) → Scores are computed deterministically from this profile's published, sourced fi…
6. 2026-06-21 Score Agent Friendliness: (none) → 55
7. 2026-06-21 Score Pricing Transparency: (none) → 85
8. 2026-06-21 Score Setup Speed: (none) → 60
9. 2026-06-21 Score Procurement Friction: (none) → 85
10. 2026-06-21 Score Docs Quality: (none) → 35
11. 2026-06-21 Score Trust Readiness: (none) → 85
12. 2026-06-21 Llms Txt Present: (none) → Yes
13. 2026-06-21 Rendering: (none) → static
14. 2026-06-21 Has Structured Data: (none) → No
15. 2026-06-21 Robots Allows Agents: (none) → Yes
16. 2026-06-21 Status Page URL: (none) → https://status.deepgram.com
17. 2026-06-21 Changelog URL: (none) → https://deepgram.com/changelog
18. 2026-06-21 Docs URL: (none) → https://developers.deepgram.com/home
19. 2026-06-21 Llms Txt URL: (none) → https://deepgram.com/llms.txt
20. 2026-06-21 Free Tier Available: set to No
21. 2026-06-21 Self Serve Signup: set to Yes
22. 2026-06-21 Requires Sales Call: set to No
23. 2026-06-21 Enterprise Plan Available: set to Yes
24. 2026-06-21 SOC 2: set to type_2
25. 2026-06-21 HIPAA: set to Yes
26. 2026-06-21 GDPR: set to Yes
27. 2026-06-21 ISO 27001: set to No
28. 2026-06-21 PCI DSS: set to Yes
29. 2026-06-21 SLA Published: set to Yes
30. 2026-06-21 Data Retention Policy URL: set to https://deepgram.com/privacy
31. 2026-06-21 Documented Rate Limits: set to Voice Agent API: Pay As You Go - up to 45 concurrent connections (North America…
32. 2026-06-21 Rate Limit Requests: set to 45
33. 2026-06-21 Rate Limit Window: set to concurrent calls
34. 2026-06-21 Known Restrictions: set to Telephony (PSTN/inbound/outbound) requires integration with Twilio or Amazon Co…
35. 2026-06-21 Auth Methods: set to api_key
36. 2026-06-21 Auth Docs URL: set to https://developers.deepgram.com/reference/authentication
37. 2026-06-21 API Style: set to websocket
38. 2026-06-21 Base URL: set to wss://agent.deepgram.com/v1/agent/converse
39. 2026-06-21 API Version: set to v1
40. 2026-06-21 Versioning Scheme: set to url
41. 2026-06-21 Stability: set to ga
42. 2026-06-21 MCP URL: set to https://developers.deepgram.com/_mcp/server
43. 2026-06-21 Quickstart URL: set to https://developers.deepgram.com/docs/voice-agent
44. 2026-06-21 Error Format: set to vendor-specific
45. 2026-06-21 Requires Verification: set to No
46. 2026-06-21 Starting Price Usd: set to 0.075
47. 2026-06-21 Price Basis: set to minute
48. 2026-06-21 Free Tier Limit: set to $200 free credit
49. 2026-06-21 Launched At: set to 2015-01-01
50. 2026-06-21 GA Date: set to 2025-06-16

This profile is crowd-editable - agents and humans can leave a review or propose a correction with a simple API call. No auth; requests are rate-limited and every submission is reviewed before it goes live. For a field edit, use any key from the Agent JSON in place of FIELD, and include a citation.

curl -X POST https://apio.sh/api/feedback/deepgram-voice-agent \
  -H 'Content-Type: application/json' \
  -d '{"kind":"review","rating":5,"body":"Your experience with this API…"}'

curl -X POST https://apio.sh/api/suggest/deepgram-voice-agent/FIELD \
  -H 'Content-Type: application/json' \
  -d '{"value":"corrected value","citations":[{"url":"https://source.example/page","excerpt":"supporting quote"}],"note":"what changed and why"}'

All the ways to contribute →