Which voice platform better fits the audio or agent experience you need to deliver?
Separate speech generation from a complete calling workflow before comparing feature lists. Run a realistic test with your languages, escalation needs and consent requirements, then verify current commercial terms directly with each provider.
Voice quality, language coverage and control over the audio experience
Conversation, telephony and handoff requirements for your workflow
Latency, safeguards, consent handling and commercial rights
Nonprofits · Organization
ElevenLabs
Decision-ready
ElevenLabs is an AI research and product company founded in 2022, headquartered in New York, offering an AI voice generator and voice agents platform with 5,000+ voices in 70+ languages across ElevenAgents, ElevenCreative, and ElevenAPI.
A missing marker means the capability has not yet been recorded in that profile. It does not prove the product lacks it.
Capabilities and use cases
Recorded capabilityElevenLabsRetell AI
Voice and calling workflowsRecordedRecorded
Supports any LLM that produces text, including OpenAI, Anthropic, Google Gemini, or any cuRecordedNot yet recorded
Auto-extracts text from OpenAI, Anthropic, and Gemini stream formats and handles interruptRecordedNot yet recorded
Writing and editingRecordedRecorded
~600ms latency with proprietary turn-taking model for real-time phone conversationsNot yet recorded
Voice AI · Platform
Retell AI
Decision-ready
Retell AI is an enterprise-grade, web-based voice AI platform for building, testing, deploying, and monitoring AI voice agents for phone call centers. It offers ~600ms latency, multilingual support, HIPAA/GDPR compliance, SOC 2…
Expressive Mode with auto and manual emotion tags plus emotion-aware listening that reactsNot yet recordedRecorded
On-demand scenario simulation without dialing a real number, with platform validation of cNot yet recordedRecorded
Lead follow-up, appointment scheduling, order confirmation, and CRM updates via AI phone cNot yet recordedRecorded
Workflow automationNot yet recordedRecorded
Real-time phone support across distributed networksNot yet recordedRecorded
Recorded integrations
Recorded capabilityElevenLabsRetell AI
Twilio has integrated ElevenLabs' generative AI voice technology into its CPaaS ConversatiRecordedNot yet recorded
Over 400 pre-configured integrations including Salesforce, HubSpot, Zendesk, Twilio, GenesRecordedNot yet recorded
Twilio has integrated ElevenLabs' voice technology into its ConversationRelay CPaaSRecordedNot yet recorded
Official Python and TypeScript SDKs exposing every capability via a REST APIRecordedNot yet recorded
ElevenLabs generative AI voice technology is integrated into Twilio's CPaaS ConversationReRecordedNot yet recorded
Built-in stream extraction for OpenAI Responses API and Chat Completions API, Anthropic MeRecordedNot yet recorded
TypeScript SDK can attach to any Node.js HTTP server, including Express, Fastify, or plainRecordedNot yet recorded
Python SDK can run as a standalone server via engine.serve() or integrate with FastAPI, StRecordedNot yet recorded
Connects to any telephony system via SIP trunking; native integrations with CRMs, calendarNot yet recordedRecorded
n8n workflow automation integration with visual editor, no code requiredNot yet recordedRecorded
Native two-way real-time CRM sync with Salesforce and HubSpot, with field mapping and a noNot yet recordedRecorded
Certified Partner program for implementationNot yet recordedRecorded
MakeNot yet recordedRecorded
TwilioNot yet recordedRecorded
VonageNot yet recordedRecorded
Jane AppNot yet recordedRecorded
viaSocket for triggering AI-powered calls and pushing results into tools in real timeNot yet recordedRecorded
Triggers from CRM, forms, sheets, and webhooks via viaSocket, with dynamic inputs (phone nNot yet recordedRecorded
Decision factors
Commercial and operational fit.
These rows prioritize buying and implementation facts. Directory status, verification labels and other publication metadata are deliberately excluded.
Decision factorElevenLabsRetell AI
Pricing and plan shapeFree | $0/month | 10,000 credits · Starter | $6/month | 30,000 credits · Creator | $22/month | 121,000 credits[2][5][27]Retell Platform Voices plus Minimax, Fish Audio, Cartesia, and OpenAI TTS at $0.015/min; ElevenLabs TTS starts at $0.04/min (price varies by model, updated March 23) · 4,000 free LLM tokens per agent before any surcharge applies · Retell Phone Numbers: $2.00/month[13][10][9]
DeploymentSpeech Engine is developer-managed on your own server; ElevenAgents is the alternative fully hosted solution where ElevenLabs provides the LLM, knowledge base, and tools. · Does not provide a hosted LLM, knowledge base, or tools; users wanting that fully hosted solution should use ElevenAgents instead. · VPC deployment, regional data residency, and zero retention mode available · Web, iOS, Android · Speech Engine is developer-managed on your own server; ElevenAgents is the alternative ful[1]Web-based (cloud) · Hosted MCP server and REST API with Node.js and Python SDKs · Retell GPT App inside ChatGPT for building, deploying to a live phone number, testing scen · Production voice operations monitored across thousands of calls per trend view · Integrates alongside existing systems (self-service portals, commissioning tools, internal[13]
Privacy and securityVPC deployment, regional data residency, and zero retention mode available · SOC 2, HIPAA, and GDPR compliant; EU Data Residency and Zero Retention modes available · SOC 2 and GDPR compliance, with optional HIPAA compliance; data encrypted in transit and at rest; EU Data Residency and Zero Retention modes available[4][8][5][1][12]SOC 2 Type I and Type II certified · HIPAA and GDPR compliant[13]
IntegrationsElevenAPI provides REST API with official Python and JavaScript/TypeScript SDKs, plus Flutter, Swift, and Kotlin SDKs for the Agents platform · Twilio has integrated ElevenLabs' generative AI voice technology into its CPaaS ConversationRelay product · Over 400 pre-configured integrations including Salesforce, HubSpot, Zendesk, Twilio, Genesys, Amazon Connect, Slack, and Cloudflare Workers[12][20][4][6][17][14][5][1][8]Model Context Protocol (MCP) connector for AI assistants · Connects to any telephony system via SIP trunking; native integrations with CRMs, calendars, and telephony · n8n workflow automation integration with visual editor, no code required[25][7][23][10][19][16][24][30][11]
Limits and constraintsSpeech Engine adds voice capabilities to any chat agent, handling speech-to-text and text-to-speech while the user's server provides the LLM logic. · Music/composition plan generation is blocked for prompts containing copyrighted material ( · Does not provide a hosted LLM, knowledge base, or tools; users wanting that fully hosted s[1]Not yet recorded
Ideal customerVoice agents for customer experience, sales, and operations; content creation for films, ads, podcasts, audiobooks, and social content · AI voice agents with sub-500ms latency for customer experience, sales, and operations · AI-powered customer support and help desk across voice, phone, chat, email, and WhatsApp[3][4][14][1]Company: Retell AI, Inc · AI Voice Agent Platform for Phone Call Centers · Enterprise-grade voice AI platform for building, testing, deploying, and monitoring voice · Enterprise-grade AI voice agent platform that handles phone calls and chat, including building, testing, deploying, and monitoring voice agents · Trusted by 1,000+ businesses including PWC, Twilio, capsule.com, Everise, and Clear[7][28][29][19][15]
Release history4 dated updates; latest 2025-03-31: Twilio integrates ElevenLabs' AI Voices into ConversationRelay[26]8 dated updates; latest 2026-07-02: Conductor launch and higher free-tier token limits[9]
Tradeoffs and evidence gaps
Limitations to test before adopting.
A missing limitation is an evidence gap, not proof that a product has no constraints.
Recorded constraints
ElevenLabs
Speech Engine adds voice capabilities to any chat agent, handling speech-to-text and text-to-speech while the user's server provides the LLM logic. · Music/composition plan generation is blocked for prompts containing copyrighted material ( · Does not provide a hosted LLM, knowledge base, or tools; users wanting that fully hosted s [1]
Recorded constraints
Retell AI
No decision-relevant limitation has been recorded yet. Validate plan limits, deployment constraints and support boundaries directly.
Change intelligence
Release, pricing and screenshot signals.
Compact dated signals make it easier to spot active release histories and pages worth rechecking. A capture records what a public page looked like; it does not by itself prove a product or price changed.
ElevenLabs
Release history
4 dated updates; latest 2025-03-31: Twilio integrates ElevenLabs' AI Voices into ConversationRelay [26]
Twilio integrates ElevenLabs' AI Voices into ConversationRelay
Twilio integrated ElevenLabs' generative AI voice technology into its Communication Platform as a Service (CPaaS), enhancing its ConversationRelay product so that businesses and developers can build conversational AI voi…
Twilio integrates ElevenLabs' AI Voices into ConversationRelay for more natural customer interactions
Twilio integrated ElevenLabs' generative AI voice technology into its ConversationRelay CPaaS platform, enabling conversational AI voice interactions with model latency as low as 75 milliseconds.
ElevenLabs raised $180M in Series C funding co-led by a16z and ICONIQ Growth at a $3.3 billion valuation, bringing total funding to $281 million since its 2022 founding.
Conductor launch and higher free-tier token limits
Released Conductor, a copilot that simulates scenarios and validates proposed voice-agent changes before deployment, alongside higher free-tier token limits.
Conductor launch and free-tier token limit increase
Retell released Conductor, a copilot for building and maintaining voice agents. It can simulate call scenarios and validate proposed changes against the platform before deployment; the same release increased free-tier to…
Conductor launched with higher free-tier token limits
Retell launched Conductor, a copilot for building and maintaining voice agents that simulates scenarios and validates proposed changes against the platform before deployment, alongside increased free-tier token limits.
Live Call Monitoring, Custom Dashboards, Built-in CRM, Colloquial Model, Expressive Mode, and more
Released Built-in CRM with two-way real-time syncing to Salesforce and HubSpot, Live Call Monitoring for real-time visibility into active conversations, plus Custom Dashboards, Colloquial Model, and Expressive Mode.
Launched Built-in CRM with real-time bidirectional Salesforce and HubSpot sync, plus live call monitoring, custom dashboards, a colloquial model, and expressive mode during Retell 2026 Launch Week.
Agent Versioning 2.0, Granular Multilingual, Custom Voicemail, Voice Orb and more
Retell released Agent Versioning 2.0 with multiple drafts, per-environment tags and default variables for safer publishing, plus granular multilingual support, custom voicemail, and Voice Orb.