Quo

OpenPhone — rebranded as Quo in 2025 and operating as OpenPhone Technologies, Inc. / Quo, Inc. — provides a cloud business phone system delivered as an app across iOS, Android, macOS, Windows and web. The product supplies users with a dedicated business phone number (new or ported, local or toll-free) separate from their personal cell number, and combines calling, SMS/MMS, voicemail transcription, shared numbers and inboxes, internal notes and a lightweight CRM in a single workspace.

More recent capabilities center on call handling and AI: call routing, phone menus, auto attendant and call flow builder, group calling and transfers, analytics and reporting, auto call recording, AI call summaries, transcripts and tags, AI-suggested message responses and contact suggestions, and Sona, an AI agent that answers calls 24/7 and captures leads over text. The platform exposes an API, webhooks, and an MCP server for use from ChatGPT and Claude, plus roughly twenty listed integrations including Salesforce, HubSpot, Pipedrive, Zoho CRM, Slack, Zapier, Make, Jobber, Clio, Gong, Attio, Clay, HighLevel and Fireflies.ai.

The company states it serves more than 90,000 businesses and has carried over 1 billion calls and messages; TechCrunch reported roughly 10 million calls and messages monthly as of April 2022. It is SOC-certified (AICPA SOC) per its website footer.

Founding story

Mahyar Raissi and Daryna Kulya, a married founding team originally from Iran and Ukraine respectively, founded the company in 2018. While building tools for trade contractors, Raissi observed that contractors who communicated better with customers earned more, yet business owners were running their companies from personal phone numbers without a professional, modern phone system. That observation led to the first version of the product, which the founders took through Y Combinator's Summer 2018 batch.

Business model

Subscription SaaS sold per user per month, with self-serve free trial and a sales-assisted motion. Three tiers are published: Starter ($19/user/month monthly, $15 annually), Business ($33 monthly, $23 annually) and Scale ($47 monthly, $35 annually). Each seat includes one local or toll-free number; additional numbers cost $5/month each. AI usage is metered in credits (1 call = 100 credits) with 1,000 free automation credits per plan and paid credit tiers at $25, $49, $99 and $199 per month, with per-call overage rates from $1.00 down to $0.45. International calling and messaging are add-ons at per-minute and per-message rates, and third-party Campaign Registry fees ($19.50 one-time plus $1.50-$3/month) apply to US messaging.

Recurring per-seat subscription revenue across three plan tiers, augmented by add-ons (extra phone numbers, international calling/messaging) and consumption-based AI credit packages with per-call overages.

Traction

Over 20,000 customers and about 10 million calls and messages per month at the April 2022 Series B; more than 90,000 businesses and over 1 billion cumulative calls and messages as reported on the company website in 2025. Google Play shows 500K+ downloads and a 4.7 rating from ~9.4K reviews; the website cites 3,300+ reviews at 4.7 stars and a #1 G2 customer satisfaction ranking. Team size is listed at 125 by Y Combinator, after the team quadrupled during 2021.

Latest developments

The company now operates under the Quo brand (announced September 2025). Recent product additions include the Sona AI agent, now included on all plans with credit-based pricing and lead capture over text; an MCP integration for ChatGPT and Claude; inbound phone support on the Scale plan; and a call quality diagnostics panel in the Android app. Leadership listed on the about page includes Mahyar Raissi (CEO & Co-Founder), Daryna Kulya (COO & Co-Founder), plus VPs of Engineering, Marketing, Revenue, Finance & BizOps, People, Recruiting and Customer Experience, and heads of Product and Design.