Quo
Shared phone and SMS system for small businesses, where AI agents answer calls, transfer them, and connect to your own agents via API.
About Quo
Quo (formerly OpenPhone) is a shared phone system for small businesses that brings calls, texts, and customer details together in one place, so team members and AI agents work together without missing opportunities. Sona answers when the team cannot respond, records key details, and hands the conversation to a human team when needed. The platform offers one-click connectors for Claude and ChatGPT, a public MCP server, and an API that your own agents can read and execute. Sona automation credits come in 5 tiers, from Tier 1 at $0/month to Tier 5 at $199/month; texts are billed per message, with US and Canada local texts at $0.01/message and international texts at $0.01 plus the destination country rate.
Best for
Best use cases
Several people share one business line to handle customer calls
Sona picks up automatically when no one on the team answers, takes notes, and transfers to a human when needed
Connect your own agents through the Claude and ChatGPT connectors, the public MCP server, or the API
Buy Sona credits monthly and send texts billed per message
Features
Shared communication space
Bring calls, texts, and customer details into one place so team members and AI agents work side by side.
Sona AI agent
Answers for the team when no one can respond, records the details you need, and hands the conversation to the team when needed.
Agent connectors and open API
One-click connectors for Claude and ChatGPT, a public MCP server, and an API that your own agents can read and execute.
Credits and pay-as-you-go billing
Sona automation credits come in 5 monthly tiers, 1 call = 100 credits, and usage beyond your tier is billed per call.
Pros
- Calls, texts, and customer details in one shared space, so the team and AI agents work together and no opportunity is missed
- Sona answers when the team cannot respond, records the details you need, and hands the conversation to the team promptly
- One-click connectors for Claude and ChatGPT, a public MCP server, and an API that your own agents can read and execute
- Sona credits start at Tier 1 for $0/month, and every Quo plan includes 1,000 free automation credits
Cons
- The current API version does not support MMS
- Some credits cannot be used to send messages; the API returns an error
Pricing Plans
Tier 1
- Includes 1,000 credits, about 10 calls
Tier 2
- Includes 4,000 credits, about 40 calls
Tier 3
- Includes 10,000 credits, about 100 calls
Tier 4
- Includes 25,000 credits, about 250 calls
Tier 5
- Includes 60,000 credits, about 600 calls
* Pricing information is for reference only. Please refer to the latest announcement on Quo's official website.