Synthflow Aims to Advance Voice AI With Scalable No-Code Agents

As chatbots dominate the AI spotlight, Synthflow is turning its focus to something far more complex and arguably more critical: voice. 

With a new platform designed to help companies deploy scalable, no-code voice agents across contact centers, Synthflow is laying the groundwork to modernize how support is delivered over the phone.

Rethinking Voice: Synthflow’s Vision for Smarter Agents

In a CX landscape dominated by text-based bots and chat copilots, voice remains the final frontier, and arguably the most difficult to master. Synthflow, a Berlin-based startup, aims to change that.

Their goal is to make building and scaling conversational voice agents as easy as spinning up a chatbot. No dev teams. No fragile IVR trees. No months-long setup cycles. Just drag, drop, deploy, and talk.

The product already exists, but the ambition is to become the infrastructure layer that powers high-volume, multilingual, 24/7 voice agents across industries.

Product First, But Backed by Capital

To accelerate this vision, Synthflow just secured a $20 million Series A led by Accel, with participation from Atlantic Labs and Singular. But unlike many funding stories, this isn’t about a roadmap. It’s about real usage.

Synthflow’s platform has already handled over 45 million calls for businesses in more than 20 countries. Their infrastructure boasts 99.9% uptime, with voice agents operating in multiple languages and across a wide range of use cases from appointment scheduling to customer service resolution.

The funding will be used to:

• Expand operations into the U.S. market

• Scale product development and R&D

• Enhance multilingual support and integrations

Investors see more than hype, they see traction, repeatable deployment, and massive room for growth in a market still largely underserved by functional voice AI.

What Makes Synthflow Different

Synthflow isn’t promising future breakthroughs. It’s focused on solving the fundamentals with clarity: buildable, scalable, customizable voice agents that don’t require technical expertise.

Key differentiators:

• No-code workflow builder: Visual logic, no engineering needed

• Enterprise-grade uptime: 99.9% across millions of calls

• Multilingual support: Native handling of global voice demands

• Fast deployment: Launch agents in under 30 minutes

For CX and IT teams burned by legacy IVR and rigid telephony systems, Synthflow offers a refreshing proposition: AI that fits into your stack and works from Day 1.

Plug-and-Play at Scale: Built for Ecosystem Integration

One of Synthflow’s biggest advantages lies in how easily it fits into enterprise environments. The platform supports a wide range of integrations from popular CRMs like Salesforce and HubSpot to help desk platforms like Zendesk and Freshdesk. Through API connectors and low-code webhooks, voice agents can interact with customer data, update tickets, trigger workflows, and escalate in real time.

This integration-first design has helped Synthflow gain traction with fast-scaling companies and global support providers who don’t have the time (or budget) for rip-and-replace transitions.

Among early adopters are large European telcos, health-tech platforms, and logistics networks. These partners rely on Synthflow to reduce hold times, improve call deflection rates, and automate high-frequency interactions with full visibility into outcomes.

Synthflow’s ability to coexist with existing tools, rather than compete with them, is what’s making it so sticky in the market.

Real-World Proof, Not Just Pilots

The platform is already active across startups and large enterprises, processing tens of millions of calls with measurable reliability and performance. Synthflow’s agents are not simply reactive, they understand, respond, and route like human reps, all while operating within defined business logic.

Voice is nuanced. But Synthflow’s architecture allows teams to train and optimize agents over time without writing code, giving business users real control over the customer experience without bottlenecks.

For example, a support team can launch a multilingual call agent that handles password resets, store hours, and appointment scheduling, without involving IT or buying new infrastructure.

The CXF Take

Voice has long lagged behind chat and text in the AI race. But that’s exactly where the next wave of CX transformation is unfolding. Synthflow isn’t just another AI startup chasing hype; it’s building the backbone for scalable, no-code voice automation that actually integrates with real-world systems. For CX and IT leaders. From static and siloed to dynamic, intelligent, and fully operational. If your contact center still feels stuck in the past, this is your signal to start catching up.