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One account works in both.

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Vapi for CXDescribe a good call and get a phone agent that's live in minutes. Every call is scored against your goal, and fixes are tested on real calls before they go live.

02 · API and SDKsContinue

Vapi for EngineersBuild voice agents in code with full control over models, voices and tools. Ship them through the API, the SDKs or the dashboard.

call.tsassistant.jsonwebhook.ts

1  const call = await vapi.calls.create({
2    assistantId: "support-line",
3    customer: { number: "+14155550134" },
4    assistantOverrides: { model: { model: "gpt-4.1" } },
5  });
6  // status: "in-progress"

Where do you want to start?One account works in both.

Where do you want to start?One account works in both.

Where do you want to start?
One account works in both.

Where do you want to start?
One account works in both.