Put a voice agent on your phone line
Build, test and ship AI phone agents from one API. Swap the speech, language and telephony providers underneath without rewriting your app.
From prompt to phone number in an afternoon
Define the agent
Write the prompt, attach tools and pick providers in the visual builder or in code.
const agent = yumi.agents.create({ voice: "ada", llm: "your-model", tools: [calendar, crm], })
Run simulated calls
Replay hundreds of scripted callers against every change. Catch regressions before a customer does.
Attach a number
Buy or port a number, deploy a version, and watch every call with transcripts and traces.
Draw the conversation. Export it as code.
Branch on intent, call your APIs mid-sentence, and hand off to a person when needed. Product teams edit the flow; engineers review the diff.
Built for the calls your team shouldn't have to take
Receptionist
Answer every call, book and reschedule appointments, and route the rest.
Clinics · salons · home servicesLead qualification
Call new leads within a minute, ask your questions, and write scores to the CRM.
Sales · real estate · solarCollections
Friendly payment reminders that set up plans and log every promise to pay.
Healthcare · lending · utilitiesSupport triage
Resolve common questions from your docs and hand off with full context.
SaaS · ecommerce · telecomPay for minutes, not seats
Everything you need to build and test. Pay per minute once you go live.
Start freeFor teams running agents in production across several lines.
Start trialVolume pricing, dedicated infrastructure and compliance reviews.
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