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Synthflow vs Retell AI

Side-by-side on funding, valuation, status, and the rest of the FOBI roster.

Voice & Conversational Interfaces

Synthflow

Synthflow offers a no-code platform for building voice AI agents, targeting SMBs and solo entrepreneurs without technical resources.

Voice & Conversational Interfaces

Retell AI

Retell AI provides APIs and SDKs for building conversational voice agents with sub-800ms latency and built-in telephony support.

For subscribers

Including Funding rounds + valuations, Founders + executives, Products + tech stack, Headcount + HQ, Status timeline, and Roster connections.

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Field	Synthflow	Retell AI
Status	Private	Private
Sector	Voice & Conversational Interfaces	Voice & Conversational Interfaces
Subsector	Voice Agent Infrastructure	Voice Agent Infrastructure
Founded	2023	2023
HQ	London, United Kingdom	San Francisco, United States
Headcount	51-200	11-50
Total raised	$27M	$4.6M