Tools
Julian vs Synthflow AI Voice Agent Builder
Julian or Synthflow AI Voice Agent Builder? Their plans monthly and yearly, the capabilities their makers state, security and latest updates, side by side — read from the makers' own pages.
In short
- Both: Automations, AI agents, Connects your apps, API, Admin controls
Julian
Julian is 11x’s inbound AI sales agent for answering, qualifying, routing, and following up with leads across voice and messaging.
Plans
Growth
- Starting at $5,333 / mo
- Starting at $2,417 / mo
- 2,000 calls / mo (Voice)
- SMS + WhatsApp Included
- 3,000 chats / mo (Chat)
- 2 Languages
- Knowledge Base included
- CRM Integration
Pro
Price on request
- 4,000 calls / mo (Voice)
- Two Use Cases
- Simulated testing + evals
- Voice + Accent Cloning
- 7,000 chats / mo (Chat)
- Real-time info lookup via API
Enterprise
Price on request
- 50,000+ calls / mo (Voice)
- Custom Use Cases
- Advanced Routing + Alice Integration
- Custom Integrations
- 100,000+ chats / mo (Chat)
- SSO
Prices checked 2026-09-25 on the maker’s page.
Capabilities
- Automations — “Leads who don't answer get consistent, timed follow-ups across phone, SMS, email, and WhatsApp.” source
- AI agents — “An AI sales agent handles sales conversations autonomously using conversational AI, artificial intelligence, and natural language processing.” source
- Connects your apps — “CRM Integration” source
- API — “API Access Included” source
- Admin controls — “Team Management” source
Security
- SOC 2 Type II — “Our SOC2 Type II certification validates our adherence to critical criteria including System Security, Availability, Processing Integrity, Confidentiality, and Privacy.” source
- SOC 2 — “Our SOC2 Type II certification validates our adherence to critical criteria including System Security, Availability, Processing Integrity, Confidentiality, and Privacy.” source
- GDPR — “Our operations fully align with GDPR data retention protocols, and we maintain data processing agreements (DPA) for all EU-based customers.” source
Synthflow AI Voice Agent Builder
Synthflow builds AI voice agents for inbound and outbound calls, with visual workflows, telephony, integrations, testing, and monitoring.
Plans
Enterprise
- Enterprise contracts start at $30,000 annually
- Enterprise SLA and support terms scoped in contract
- Synthflow Native Telephony, SIP trunking, or approved enterprise telephony
- Custom concurrency planning, routing, escalation paths, handoffs, and fallback logic
- CRM, calendar, contact-center stack, webhook, API, and knowledge-source integrations
- MSA/DPA support, data handling review, workspace controls, and enterprise security review
- Implementation, onboarding, testing, training, launch support, and ongoing optimization
Prices checked 2026-09-24 by web search.
Capabilities
- Automations — “Synthflow automates the calls that slow teams down.” source
- AI agents — “Synthflow is an AI voice agent platform that helps businesses automate phone calls across customer service, sales, appointment booking and call routing.” source
- Connects your apps — “Yes. Synthflow connects to CRMs, ERPs, and platforms like Google Cloud, Zapier , and HubSpot .” source
- API — “API Docs” source
- Admin controls — “Synthflow’s infrastructure is certified across SOC 2, HIPAA, PCI DSS, and GDPR — with full encryption, audit logs, and region-based hosting built into every release.” source
Security
- SOC 2 Type II — “COMPLIANCE SOC 2 Type 2” source
- SOC 2 — “COMPLIANCE SOC 2 Type 2” source
- ISO 27001 — “Our answers are maintained against an ISO/IEC 27001-certified and SOC 2 Type II-audited control set.” source
- GDPR — “Compliance DORA EU AI Act GDPR” source
Latest updates
- Campaigns, Advanced Synthflow LLM, Business Hours, Analytics Across Subaccounts & more
Outbound campaigns can be launched and managed through the API; agents can keep office hours; analytics span every subaccount.
- Synthflow Recognized as a Voice AI Leader — Official Claude, Five9 & More
Claude connector and plugin, Five9 Handoff, live call monitoring, WebSocket media, and background audio on running actions.
- Claude Code & Codex Connectors, Zoom & RingCX, Cross-Channel Memory, Custom Caller ID on Warm Transfers & more
Claude Code and Codex connectors, Zoom and RingCX integrations, shared memory across voice, SMS, and WhatsApp, and caller-ID controls on warm transfers.