AI Agents & Chatbots Contact Center & CCaaS Voice & Phone AI
Berlin-based enterprise voice AI platform with its own telephony network, a visual flow builder and built-in testing and auto-QA. Contracts from $30,000/yr.
Mid-size and enterprise contact centers and BPOs that want voice agents with telephony, pre-launch testing and auto-QA from one vendor, especially Freshworks or 8x8 shops.
You want pay-as-you-go, self-serve voice agents; Synthflow now sells enterprise contracts starting at $30,000 a year.
Synthflow is a platform for building AI voice agents that answer and place phone calls, and since 2026 it also runs chat agents from the same workflows. Agents are built in a visual Flow Designer, where subflows act as specialised agents for separate tasks and steps call your APIs, and are deployed into customer service, receptionist, appointment booking, IVR, lead qualification and outbound campaigns. It connects to more than 200 tools, including contact center platforms (Genesys, Five9, 8x8, RingCentral, Cisco, Avaya), CRMs (Salesforce, HubSpot, Zoho, Freshworks), helpdesks (Zendesk, Intercom) and telephony carriers such as Twilio, Telnyx and Vonage. Synthflow claims more than 30 languages.
Two things distinguish it from Retell and Vapi, the developer-first voice platforms it is usually compared with. First, Synthflow runs its own telephony network, which it says keeps latency under 100 milliseconds and lets it place voice infrastructure in the regions a customer needs, while still accepting your own carrier or SIP trunk. Second, it has packaged the agent lifecycle into what it calls the BELL framework (Build, Evaluate, Launch, Learn): agents are tested in a Test Center with simulated calls before going live, and Auto-QA scores every live conversation afterwards so the results feed the next version. Forward-deployed engineers handle enterprise rollouts. The trust center lists SOC 2 Type 2, ISO 27001, ISO 42001, HIPAA, PCI DSS, GDPR and EU AI Act coverage, which is unusually broad for a company this young.
Synthflow was founded in Berlin in 2023 by Hakob Astabatsyan (CEO), Albert Astabatsyan and Sassun Mirzakhan-Saky. It raised a pre-seed led by Atlantic Labs, a seed led by Singular in 2024 and a $20 million Series A led by Accel in June 2025, for $30 million in total, and has about 70 employees. It says more than 130 enterprises use it. The most notable deployment is a partnership with Freshworks that puts Synthflow voice AI inside Freshcaller, Freshdesk and Freshservice, automating up to 65 percent of routine voice requests; 8x8 and AVANT signed channel partnerships in 2026. Customer stories include Thryv, Medbelle, Euro Paper and Niagara Region Transit.
Synthflow has moved upmarket: its pricing page now lists only enterprise contracts, starting at $30,000 a year and scoped around call volume, concurrency, telephony and integrations. Choose Synthflow if you want enterprise voice agents with telephony, testing and QA handled by one vendor, especially if you already run Freshworks or 8x8. Skip it if you are a small business or developer wanting to pay by the minute and build yourself; Retell or Vapi publish usage pricing and let you start without a contract.
See the best Synthflow alternatives →
Enterprise contracts start at $30,000 annually.checked October 2026
Final pricing is scoped around call volume, concurrency, telephony setup, integrations, security needs, and launch support.checked October 2026
Final pricing is scoped around call volume, concurrency, telephony setup, integrations, security needs, and launch support. Contact Saleschecked October 2026
Synthflow was founded in Berlin in 2023checked October 2026
Design, deploy, and manage AI agents across every channel … voice, chat, SMS, and more … WhatsApp Integrationchecked October 2026
Compliance SOC 2 Type 2 GDPR DORA EU AI Act HIPAA ISO/IEC 27001 ISO/IEC 42001:2023 PCI DSS v4.0.1checked October 2026
30+ Languageschecked October 2026
2025 $20 million Series A funding round led by Accelchecked October 2026
Its AI agents can answer calls, handle common enquiries, qualify leads, schedule appointments, update CRM records andchecked October 2026
They also work after hours and support multilingual calls, with built-in sentiment analysis and human handoff when needed.checked October 2026
They don’t just handle conversations; they complete actions, update records, route calls, and trigger downstream processes in real time.checked October 2026
Yes, you can start and build your AI agent for free using our library of industry templates or build your own. You can design custom call flows, set up voicemail detection, and configure integrations without any upfront cost. When you are ready to launch your Agent, you start to use a Pay-As-You-Go (PAYG) model: you only pay for the actual calls and chats conducted.checked October 2026
Enterprise contracts start at $30,000 annually.checked October 2026
Updated October 2026
Enterprise contact center AI: GenerativeAgent resolves voice and chat contacts, with humans supervising in the loop. Used by JetBlue and American Airlines.
Voice AI platform for phone agents that runs its own speech-to-text, LLM and text-to-speech models, aimed at regulated, high-stakes customer calls.
Enterprise conversational AI for banks, insurers, and public sector: high accuracy chat and voice automation.
Cloud call center for SMB sales and support teams, with AI voice agents that answer, resolve or hand off calls on the same queues as your reps.
Support your customers and agents with Cognigy.AI, powered by Generative AI on voice and chat
AI-native CX platform that replaces chatbot, CCaaS, ticketing and QA tools with AI agents plus a managed team, charging when the AI resolves.
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