SynthFlow AI
SynthFlow AI is a Berlin-based enterprise voice AI platform offering no-code AI phone agents for sales, support, and scheduling across healthcare, BPO, real estate, and financial services, with proprietary in-house telephony infrastructure delivering sub-100ms latency and serving 1,000+ customers globally.
- Company typePrivate
- Founded2023
- HeadquartersBerlin, Germany
- Headcount51–100
- GTM typeB2B
- OfferingSoftware
What SynthFlow AI does
SynthFlow AI (legal entity SynthFlow GmbH, Berlin) is an enterprise voice AI platform founded in 2023 that enables no-code deployment of AI phone agents. The company's flagship product is a no-code Studio that lets operations, sales, and support teams build, test, and deploy AI voice agents that answer inbound calls, perform outbound sales and marketing campaigns, schedule appointments, qualify leads, and route tickets. The platform targets enterprises and SMBs across healthcare, BPO, real estate, financial services, retail, transit, and telecom verticals.
The technology architecture combines third-party foundation models (OpenAI for LLM, ElevenLabs for TTS, Deepgram for ASR) with a proprietary orchestration layer and, critically, an in-house carrier-grade Session Border Controller (SBC) telephony stack that delivers sub-100ms latency and a 99.99% uptime SLA across US and EU regions. This in-house SBC differentiates SynthFlow from voice-AI competitors that rely on Twilio or similar aggregators, giving it lower per-minute cost and direct carrier relationships. The product surface includes 200+ pre-built integrations (CRM, calendar, payment, telephony, helpdesk), a proprietary BELL sales framework, white-label capabilities for agencies and BPOs, a 10K+ Discord developer community, and enterprise compliance with SOC 2 Type II, HIPAA, GDPR, and ISO 27001.
SynthFlow monetizes through tiered SaaS subscriptions: Starter at $29/month, Pro at $59/month, Business at $499/month, plus per-minute voice usage fees and custom Enterprise contracts starting at $30,000+/year. The GTM model blends self-serve PLG for SMBs, direct enterprise sales for regulated verticals (healthcare, financial services), and channel partnerships (AVANT exclusive, 8x8, Freshworks integrations) for reach into CCaaS ecosystems. To date the company reports 1,000+ customers, 65M+ voice interactions processed, and double-digit month-on-month revenue growth, supported by approximately $30M of cumulative venture funding led by Singular (seed) and Accel (Series A).
SynthFlow AI firmographics
Firmographics- Name
- SynthFlow AI
- Legal name
- AgentFlow AI GmbH
- Website
- https://synthflow.ai
- Company type
- Private
- Founded year
- 2023
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- SynthFlow AI is a Berlin-based enterprise voice AI platform offering no-code AI phone agents for sales, support, and scheduling across healthcare, BPO, real estate, and financial services, with proprietary in-house telephony infrastructure delivering sub-100ms latency and serving 1,000+ customers globally.
- Ownership category
- akta.pro rank
SynthFlow AI industry classification
Industry- Product category
- Voice AI Platform
- NAICS
- Software Publishers (5132)
- SIC
- Services-Prepackaged Software (7372)
- akta.pro primary industry
- Conversational AI Platforms (chat/voice bots, orchestration) (HDAAAFAC)
- akta.pro secondary industries
- Contact Center Speech AI (agent assist, IVR automation) (HDAAAFAL), Agents & Autonomous Workflows (Tool Use, Planning, Multi-Agent) (HDAAACAF), AI Integration & Orchestration Platforms (Connectors, Workflow, iPaaS for AI) (HDAEANAI)
Keywords
Where SynthFlow AI is headquartered
LocationHeadquarters
- HQ city
- Berlin
- HQ country
- Germany
- HQ region
- Europe
Offices2 records
Markets served
SynthFlow AI business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Technology or R&D, Personnel, Infrastructure, Marketing or Sales
Revenue model
- Subscription / Per-Minute Pricing: Synthflow primarily operates on a subscription-plus-usage model. Plans (Starter at $29/month, Pro at $450/month, Growth at $900/month, Agency at $1,400/month) bundle platform access with included AI call minutes, with overage charged per minute ($0.13/min above plan limits). Enterprise contracts start at approximately $30K/year with custom volume pricing. The company is actively building toward outcome-based pricing where cost ties to completed work rather than minutes consumed.
- Usage-Based (PAYG): Pay-as-you-go model available from day one with no upfront commitment. Users only pay for actual calls and chats conducted. Billing is per-second across all channels. Component-based pricing exposes Voice Engine, LLM selection, and telephony costs separately for full transparency.
- Enterprise / Custom Contracts: Large enterprise deployments receive custom pricing including unlimited concurrent calls, dedicated solution architecture support, geo-based sub-processing controls, MSA support, and on-premise deployment options. White-label platform (Agency tier) and reselling capabilities provide additional revenue from partners.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Freemium | Pay-as-you-go | Free entry with limited minutes; no credit card required |
| Subscription | Monthly | Entry-level plan for single workspace and basic voice AI |
| Subscription | Monthly | Mid-tier plan with active assistants and real-time booking |
| Subscription | Monthly | High-volume plan with workspaces and dedicated support |
| Subscription | Monthly | Full white-label platform for agencies and BPOs |
| Subscription | Annual | Custom enterprise-grade contracts with SLA and unlimited concurrency |
Go-to-market motion3 records
Distribution channels7 records
Marketing channels9 records
SynthFlow AI product offering
Product offeringCore offering
SynthFlow AI provides a no-code Voice AI platform with integrated in-house telephony that enables businesses to build, deploy, and manage voice AI agents for automated inbound and outbound phone calls. The platform allows non-technical users to create conversational AI workflows through a visual builder, eliminating the need for coding expertise or third-party telephony providers.
Product overview
Synthflow AI is an enterprise-grade Voice AI platform offering a unified Voice AI Operating System for automated phone calls. The core product is the Synthflow Voice AI Platform with integrated Flow Designer for no-code visual agent building and Aurora for prompt-based agent configuration. The platform includes proprietary in-house telephony infrastructure delivering sub-100ms latency. Key modules include Real-Time Booking, Warm Transfer, AI IVR, Memory, Knowledge Base, Multi-Agent System, Test Center, and WhatsApp Business Calls integration. The platform supports omnichannel deployment across voice, SMS, chat, WhatsApp, and email with consistent agent logic. Additional offerings include white-label platform for agencies/BPOs and a marketplace of pre-built industry templates for healthcare, real estate, retail, BPO, financial services, and technology sectors.
Differentiator
Problem solved
Functional benefit
Products and services
- SynthFlow Voice AI Platform
Quantifiable outcome
- 65% of routine voice requests automated (Freshworks integration)
- +13 more outcomes
Companies that use SynthFlow AI
Customer profileNamed customers6 records
Segments9 records
Ideal customer profiles2 records
SynthFlow AI technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration13 records
AI capability8 records
Feature12 records
SynthFlow AI partnerships and signals
Strategic signalPartnerships
Nine partnerships are on record, tiered core and flagship.
- AVANT CommunicationscoreSynthflow AI entered an exclusive strategic partnership with AVANT Communications to distribute its voice AI technology across customer experience and AI portfolios targeting consumer lending, healthcare, retail, and financial services sectors. AVANT serves as the exclusive channel partner, with initial business already generated and first joint deals completed. The partnership emphasizes rapid 2-3 week deployment compared to traditional multi-month implementations, with multilingual support across more than 30 languages.
- 8x8coreSynthflow AI and 8x8 formed a strategic partnership to integrate Synthflow's agentic AI platform into the 8x8 Contact Center, enabling automated self-service and enhanced agent support across voice, chat, and digital channels without requiring developer support. Both companies plan to resell Synthflow directly through the 8x8 App Store, with future availability for small and medium businesses. The partnership targets the $54 billion voice AI market, with Synthflow having already processed over 65 million voice interactions.
- FreshworksflagshipThrough a strategic partnership, Freshworks and Synthflow offer real-time Voice AI inside Freshcaller, Freshdesk, and Freshservice, allowing businesses to automate up to 65% of routine voice requests from routing and verification to FAQs and after-hours ticket creation. This is described as a flagship integration, with Synthflow featured on Freshworks' integration page.
- HubSpotcoreNative HubSpot integration enables voice AI agents to sync call data, automate follow-ups, and integrate with HubSpot CRM workflows without custom development.
- SalesforcecoreNative Salesforce integration with OAuth support enables voice AI agents to update CRM records, trigger workflows, and integrate with Salesforce data and processes.
- TwiliocoreCustom Twilio integration available at the Starter tier. Synthflow also operates its own telephony infrastructure independent of Twilio but supports BYOC with Twilio for customers who prefer it.
- OpenAIcoreOpenAI provides the LLM (large language model) backbone for Synthflow's voice AI orchestration. Powered by proprietary orchestration and models from OpenAI as listed in the AI Transparency Statement.
- ElevenLabscoreElevenLabs provides text-to-speech (TTS) technology for Synthflow's voice output, enabling natural-sounding voices and voice cloning capabilities across 50+ languages.
- DeepgramcoreDeepgram provides automatic speech recognition (ASR) for Synthflow's voice AI, enabling accurate transcription of caller speech in real time.
Scale indicators9 records
Recent moves7 records
Expansion highlights8 records
SynthFlow AI competitors and assessment
Company assessmentDirect peers
- Vapi: Vapi is a developer-focused voice AI agent platform offering low-latency orchestration across STT, LLM, and TTS providers. It competes head-to-head with Synthflow in the no-code/low-code voice agent builder category for SMB through mid-market buyers.
- Bland AI: Bland AI offers an enterprise-grade voice agent platform for automating phone calls with telephony infrastructure, custom voices, and integrations. It directly overlaps Synthflow's enterprise call automation value proposition.
- Retell AI: Retell AI builds a no-code platform for building, testing, and deploying AI voice agents with telephony APIs and conversational logic. It targets the same SMB-to-enterprise contact center automation segment as Synthflow.
- Voiceflow: Voiceflow is a conversational AI design and orchestration platform supporting voice and chat agents with deep integrations. It is cited directly in Synthflow's competitive comparison pages as a peer.
- PolyAI: PolyAI develops enterprise voice assistants for customer service across industries like healthcare, hospitality, and financial services. Its focus on human-like call center automation is highly comparable to Synthflow's core offering.
- Goodcall: Goodcall offers an AI-powered call answering and automation platform aimed at SMBs and mid-market businesses, integrating directly with telephony providers. Synthflow names Goodcall explicitly in its competitive comparison set.
- Replicant: Replicant builds autonomous voice AI agents for customer service that resolve calls without human intervention in enterprise contact centers. Its product and target buyer map closely to Synthflow's enterprise voice AI deployment use cases.
Broad incumbents
- Kore.ai: Kore.ai provides a broad conversational AI and contact center AI platform spanning voice, chat, and digital channels for enterprise customer experience. It is a broader incumbent that competes with Synthflow in enterprise voice agent deployment.
- Cresta: Cresta provides a real-time agent assist and conversational AI platform for contact centers combining AI agents, coaching, and analytics. Its agent assist and voice automation capabilities overlap with Synthflow's enterprise contact center positioning.
Emerging players
- ElevenLabs Conversational AI: ElevenLabs is a Synthflow technology partner for TTS, but it now also offers its own Conversational AI agent platform. As an upstream technology vendor turning into a competitor, it represents a credible adjacent emerging threat to Synthflow's no-code voice agent stack.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks6 records
Key highlights6 records
Customer concentration
SynthFlow AI social profiles
Digital presenceSynthFlow AI compliance and trust
Trust signalCompliance5 records
SynthFlow AI financial estimates
Financial estimateRevenue estimate
Valuation estimate
SynthFlow AI leadership team
Management profileNumber of profiles
SynthFlow AI funding detail
Funding detailFunding overview
Funding rounds3 records
Investors4 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
SynthFlow AI M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about SynthFlow AI
What does SynthFlow AI do?
SynthFlow AI provides a no-code Voice AI platform with integrated in-house telephony that enables businesses to build, deploy, and manage voice AI agents for automated inbound and outbound phone calls. The platform allows non-technical users to create conversational AI workflows through a visual builder, eliminating the need for coding expertise or third-party telephony providers.
Is SynthFlow AI a public or private company?
SynthFlow AI is a private company. It is classified as venture growth investor backed and is currently operating.
When was SynthFlow AI founded?
SynthFlow AI was founded in 2023. It employs 51 to 100 people.
Where is SynthFlow AI based?
SynthFlow AI is headquartered in Berlin, Germany, in the Europe region.
How does SynthFlow AI make money?
Three revenue lines are on record. Subscription / Per-Minute Pricing is the primary driver. The others are usage-Based (PAYG) and enterprise / Custom Contracts.
Who are SynthFlow AI's main competitors?
Direct peers on record are Vapi, Bland AI, Retell AI, Voiceflow, PolyAI, Goodcall and Replicant. Broad incumbents are Kore.ai and Cresta. ElevenLabs Conversational AI is listed as an emerging player.
Does SynthFlow AI have an API?
Yes. Synthflow offers an API for developers to integrate voice AI capabilities into their applications. The API supports custom actions, webhook integrations, and SIP endpoint connections. Documentation is available at docs.synthflow.ai, including API reference, SDK guides, and MCP connectors for custom actions. Supports before-the-call and during-the-call custom actions with variable substitution using {X-header-name} syntax. Developer documentation is at docs.synthflow.ai/getting-started-with-your-api.
What industry is SynthFlow AI in?
SynthFlow AI's product category is Voice AI Platform. Its primary akta.pro industry code is HDAAAFAC, Conversational AI Platforms (chat/voice bots, orchestration), with a secondary code of HDAAAFAL, Contact Center Speech AI (agent assist, IVR automation). Its NAICS code is 5132 and its SIC code is 7372.