Lead Qualification
Instantly screen inbound contacts, confirm match criteria, and log results.
00:00
A monday.com company
Harmony.ai is a managed voice AI platform for teams handling 500+ calls a month. White-glove implementation, live in days, every call transcribed and scored. Our own models, built for the phone.
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Harmony.ai vs Synthflow
 |  | |
|---|---|---|
| Platform | ||
| Built for | Revenue teams: AI receptionist, AI SDR, scheduling | No-code voice AI agents for CX and contact centers |
| Model | Our own models, built for the phone | Third-party LLM and voice providers behind a no-code builder |
| Sounds human | Our own conversation models handle interruptions, timing and tone, so calls feel human | ElevenLabs by default, Synthflow TTS engine and Deepgram Aura voices; cloning via ElevenLabs |
| Implementation | White-glove | Forward-deployed engineers; launch in weeks (published) |
| Calling & scale | ||
| Latency | Sub-400ms median response | Sub-500ms (published) |
| Concurrency | 1 to 10,000 parallel calls | Custom concurrency planning on enterprise contracts |
| Telephony | Built-in telephony or bring your own trunks; buy, assign and retire numbers across regions from one inventory; port or forward | Buy US, Canada or Australia numbers at $1.50/month for testing; Twilio integration; SIP and PBX on Enterprise only |
| Spam remediation | Number-reputation monitoring, automatic quarantine of flagged numbers, remediation, branded caller ID and local presence | Not documented; caller ID policy sits with your carrier |
| IVR, screeners and gatekeepers | Navigates external phone trees, hold queues and human gatekeepers to reach the right party; DTMF both ways; voicemail detection and retry | Voicemail detection and voicemail drop; outbound IVR navigation with DTMF is an open request on their public roadmap |
| Insight & improvement | ||
| Reporting | Funnel, call-flow and conversation analytics on 100% of calls; ask for a report in plain language and get it built on the spot | Analytics dashboard: volume, outcomes, sentiment and per-agent performance |
| Self-improvement | Reasoning trace on every call, simulate changes on past calls, agent proposes knowledge-base updates you approve | Manual: version history with one-click rollback, Test Center with AI-generated test cases |
| Experimentation | A/B live or synthetic traffic, publish the winner, roll back; agent keeps what converts across a campaign | Test suites in the Test Center; no traffic-split A/B documented |
| Pricing & compliance | ||
| Pricing | Plans start at $3K/month | Enterprise contracts from $30,000/year (published) |
| Compliance | SOC 2 Type II, HIPAA, GDPR, ISO 27001 | SOC 2, HIPAA, PCI DSS, GDPR |
Synthflow figures from synthflow.ai, synthflow.ai/pricing, docs.synthflow.ai and its public changelog and roadmap, checked 9 Sep 2026. Synthflow is a trademark of its owner. Harmony.ai is not affiliated with Synthflow.
Hear it on your own use case.
Four quick questions, then we’ll configure an agent on your use case and let you listen before you commit to anything.
Built for revenue, not a toolkit
Inbound and outbound on one platform. The agent dials, qualifies, and books meetings in your CRM.
Implementation is included
White-glove setup, live in days. No engineering project to stand up telephony, models, and workflows.
Every call becomes data
Every call transcribed and scored. Warm transfers with context, PII redaction, TCPA and DNC aware.
Scale without a quota request
1 to 10,000 parallel calls. Sub-400ms median response at any volume.
Meet Siena, your AI assistant
Enterprise-grade security
Enterprise-grade AI infrastructure with built-in protection and security, data privacy, governance, permissions, and compliance.
