Cactus

Simple AI, founded in 2024 in San Francisco and part of Y Combinator's Summer 2024 batch, builds voice AI agents that handle inbound sales and support calls for businesses, using real-time customer data to personalize conversations and take actions such as placing orders. It was co-founded by Catheryn Li (CEO, who previously led software teams at Y Combinator) and Zach Kamran (who previously led product for YC's Bookface). It raised a $14M seed round led by First Harmonic in February 2026. Not to be confused with Beijing-based embodied AI company Simple AI (深朴智能).

Seed · $14M · 2026-02

Applied Labs was founded in 2023 in New York, USA, developing AI agents to automate complex customer support and operational tasks for enterprises. Its platform can resolve tickets in under three minutes that would otherwise take days to handle.

Seed · $4M · 2025-02

Lace AI, founded in 2021 in Silicon Valley, provides AI-driven customer service software for home services companies, using AI to analyze all inbound calls and detect lost revenue opportunities.

Seed · $14M · 2025-04

Founded in 2021 in Hangzhou, Shulex offers a one-stop AI customer service and market intelligence solution for cross-border e-commerce sellers.

Series A · $14M · 2025-03

FookAI (福客AI), operated by Zhibuige (Chengdu) Technology Co., Ltd., founded in 2023 in Chengdu, China, provides AI-powered e-commerce customer service solutions that automatically handle e-commerce inquiries through multilingual large language models and multi-agent collaboration.

Strategic · 2026-05

RedBear AI (红熊AI), founded in 2024 in Shanghai, China, is a provider of AI customer service and agent platforms built on multimodal large language models and memory science.

Series A · $59M · 2026-07 · Valuation $220M

Telli, founded in 2024 in Berlin, Germany, develops AI voice agents that help businesses manage inbound customer calls, including appointment scheduling, lead qualification, and product information delivery. The company has achieved over 50% month-over-month revenue growth and has handled nearly one million calls from its Berlin office with a team of just six people.

Seed · $19M · 2026-07

Plain is a London-based, API-first B2B customer support platform founded in 2020 by ex-Deliveroo colleagues Simon Rohrbach and Matt Vagni. It unifies support conversations from Slack, Microsoft Teams, Discord, email and chat into one workspace with AI triage, automation and an AI assistant (Sidekick), serving developer-focused companies such as Sanity, Laravel, Stytch and Raycast.

$6M

Founded in 2024 in Paris, France, Beside provides AI-powered applications for handling phone calls and SMS, including AI reception, conversation, and automated follow-up. The platform has served over 20,000 paying users.

Undisclosed · $32M · 2025-11

Bolna, founded in 2024 in Bengaluru, India and San Francisco, USA, provides voice AI agent orchestration for Indian enterprises, with applications in customer service and outbound calling.

Seed · $6M · 2026-01

14.ai, founded in 2023 in San Francisco, USA, uses an AI-plus-human-agent model to end-to-end manage customer service operations for startups and brands.

Seed · $6M · 2026-03

Kapture CX is an enterprise AI customer experience company headquartered in Bangalore, India. Its core product AgentOS comprises an agent builder (VITOS), a human oversight layer (COMMAND), an audit layer (CALIBRATE), and a data intelligence layer (PULSE), enabling enterprises to build, test, and deploy omnichannel AI customer service agents without coding. The platform serves over 1,000 enterprise clients across 18 countries, including Bajaj Finance, Tata, and Reliance Group, spanning banking, retail, travel, and utilities.

Series B · $10M · 2026-07