
Build autonomous AI agents for WhatsApp, email, voice, and every channel your customers use.
Nova Echo AI records 649 monthly visits with -86.6% month-over-month growth and Paid pricing. Synthflow.ai records 95,542 monthly visits with -7.6% growth and Free Trial, Contact for Pricing pricing.

Hyper-realistic AI voice employees for sales, support, and appointment-setting calls
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | novaecho.ai | synthflow.ai |
| Pricing Model | Paid | Free Trial, Contact for Pricing |
| Monthly Visits | 649 (649) | 95.54K (95,542) |
| MoM Traffic Delta | -4.21K (-86.6%) | -7.91K (-7.6%) |
| Primary Market & Share | 🇮🇳 India (83%) | 🇺🇸 United States (59.9%) |
| Direct Visits / mo | 253 | 32.52K |
| User Rating | 3.8 | 4.2 |
| Supported Platforms | Website | Website |

Hyper-realistic AI voice employees for sales, support, and appointment-setting calls
State-of-the-art infrastructure keeps conversational delay low so AI employees respond with natural, human-feeling timing.
Echoes can handle and place more than 10,000 calls per day, keeping inbound and outbound coverage continuous.
AI calls, human calls, texts, emails, and social messages are consolidated into a single platform for multi-channel sales and support.
Conversational voice AI handles calls in 30+ languages for international sales teams and multilingual support desks.

Enterprise AI voice agents that work inside your phone system
Design AI agents for inbound and outbound calls without building a custom voice stack yourself.
Agents read and write Salesforce, HubSpot, Zendesk, Freshworks and more during the call, through 200+ integrations.
Keep your numbers and carrier thanks to built-in connections for Zoom, Five9, RingCentral, 8x8, Twilio, Telnyx, Vonage and Freshcaller, plus SIP setups.
Synthflow runs regional telephony infrastructure with SIP ladder, packet capture and quality scores for every call.

Build autonomous AI agents for WhatsApp, email, voice, and every channel your customers use.

Enterprise voice AI that resolves customer conversations
Enterprise voice AI that resolves customer conversations

Cloud phone system and AI voice agents for sales, support, and call centers
Cloud phone system and AI voice agents for sales, support, and call centers

Build, test, and ship chat and voice AI agents for customer experience

Enterprise voice AI agents that handle your most regulated phone calls
Enterprise voice AI agents that handle your most regulated phone calls

AI phone agents that answer, qualify and route every call 24/7

AI voice and chat agents that handle every revenue conversation
AI voice and chat agents that handle every revenue conversation

Build AI voice and chat agents that answer calls, qualify leads, and support customers 24/7.
Build AI voice and chat agents that answer calls, qualify leads, and support customers 24/7.

AI sales agents that answer every lead in seconds
AI sales agents that answer every lead in seconds

AI voice agents that answer, dial, book, and follow up for you
AI voice agents that answer, dial, book, and follow up for you
Free / Open-sourceHire autonomous AI teammates for customer service, sales and recruiting
Free / Open-sourceHire autonomous AI teammates for customer service, sales and recruiting

Voice AI agents for inbound and outbound business calls
Voice AI agents for inbound and outbound business calls