Retell AI is a platform that enables developers to build advanced, human-like conversational voice AI quickly, with an impressive response time of around 800ms.
Founded in 2023 and backed by Y Combinator, Retell AI offers APIs for creating voice agents capable of handling complex tasks and interruptions. The company aims to revolutionize customer service with its stateful multi-prompt framework.
From 0 to $3M in revenue in the 6 months since launching with no sales or marketing.
Retell Historical Milestones
Jun 1, 2026
Retell ARR hit $60M scaling rapidly with voice AI solutions$60M
⚡ Grew from $50M to $60M ARR in just 18 days (beating 85% of SaaS peers)
May 13, 2026
Retell scales to $50M+ ARR with a team of 30 people$50M
⚡ Grew from $36M to $50M ARR in just 5.8 months
Nov 20, 2025
Retell Reaches $36M ARR$36M
⚡ Grew from $15M to $36M ARR in just 3.7 months (beating 78% of SaaS peers)