Lead Qualification
Instantly screen inbound contacts, confirm match criteria, and log results.
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A monday.com company
Harmony.ai vs Five9: a managed calling solution, not a per-seat suite.
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 Five9
 | Five9 | |
|---|---|---|
| Platform | ||
| Built for | Revenue teams: AI receptionist, AI SDR, scheduling | Cloud contact-center suite for enterprise and mid-market service teams; per-seat licences for human agents, AI Agents sold as an add-on |
| Model | Our own models, built for the phone | Third-party engines: Google Dialogflow and Amazon Lex for natural language (published); LLM providers not named on the AI Agents page |
| Sounds human | Our own conversation models handle interruptions, timing and tone, so calls feel human | Text-to-speech in 50+ languages with hundreds of voices; speech recognition in 130+ languages and dialects (published) |
| Implementation | White-glove | Customer or partner defines goals in natural language on the Five9 platform; bundles need a minimum of 50 seats (published) |
| Calling & scale | ||
| Latency | Sub-200ms median response | Low latency claimed; no figure published |
| Concurrency | 1 to 10,000 parallel calls | Not published |
| Telephony | Built-in telephony or bring your own trunks; buy, assign and retire numbers across regions from one inventory; port or forward | Own telephony (Five9 Global Voice) inside the suite; additional usage-based pricing may apply (published) |
| Spam remediation | Number-reputation monitoring, automatic quarantine of flagged numbers, remediation, branded caller ID and local presence | Not published |
| 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 | Deterministic IVA flows plus autonomous AI Agents for inbound self-service (published); outbound IVR navigation not documented |
| 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 | Reporting & Analytics and AI Insights modules across the suite (published) |
| Self-improvement | Reasoning trace on every call, simulate changes on past calls, agent proposes knowledge-base updates you approve | Manual: full lifecycle control on one platform with custom guardrails and real-time monitoring (published) |
| Experimentation | A/B live or synthetic traffic, publish the winner, roll back; agent keeps what converts across a campaign | Not published |
| Pricing & compliance | ||
| Pricing | Plans start at $3K/month | Per seat: Digital $119 and Core $159 per month; Plus, Pro and Enterprise on quote; AI Agents are an add-on; 50-seat minimum (published) |
| Compliance | SOC 2 Type II, HIPAA, GDPR, ISO 27001 | SOC 2 Type 2, ISO 27001, ISO 27017, PCI DSS Level 1, HIPAA, GDPR (published) |
Five9 figures from five9.com (pricing, AI Agents, IVA supported-languages datasheet and security pages), checked 12 Oct 2026. Five9 is a trademark of its owner. Harmony.ai is not affiliated with Five9.
Hear it for yourself.
Three scenarios. One AI agent under pressure.
The interruption test
The caller changes their mind mid-sentence. The agent keeps up, no reset.
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The edge case
An off-script question gets a controlled answer, then straight back to the flow.
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The handoff
When it's genuinely human territory, the agent transfers warm, with a summary.
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Proactive Sales Use Cases
Our agents integrate with your CRM to handle operations across the entire customer lifecycle.
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.
Why teams choose Harmony.ai over Five9
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-200ms 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.
