Build AI Voice Agents for Phone and Web

Imagine if your phone lines could answer themselves — with real conversations, not robotic menus. That’s Dasha BlackBox. You build a voice agent, teach it what to say, and let it handle calls while you focus on everything else. No more hold music. No more “press 1 for sales.” Just natural conversations that actually help your customers.

What people are building

Here’s what real businesses are doing with Dasha BlackBox right now: A busy e-commerce store handles 500+ support calls every day. Their agent answers shipping questions, processes returns, and knows when to bring in a human for the tricky stuff. What used to take 8 minutes now takes 2.5. A growing SaaS company qualifies leads before they reach the sales team. The agent asks about budget, timeline, and what they’re looking for. Now sales only talks to people who are actually ready to buy — and their conversion rate tripled. A healthcare clinic cut no-shows by 40%. Their agent calls patients the day before appointments, confirms they’re coming, and reschedules if needed. Patients love the reminder. The front desk loves not making 200 calls a day. A delivery company keeps customers in the loop. “Your package arrives in 30 minutes — will someone be home?” Customers just answer naturally, and the route updates automatically.

What you can do with it

Feature	What it means for you
Multiple AI providers	Try different models, find what works best. Switch anytime without rewriting anything.
50+ natural voices	Find a voice that fits your brand. Or clone your own.
Phone + web	Put your agent on a real phone number, or embed it right in your website.
Smart actions	Your agent can check inventory, book appointments, look up orders — all mid-conversation.
40+ languages	Go global without rebuilding.
Fast responses	Under 2 seconds. Conversations feel natural, not awkward.
Instant notifications	Know when calls start, end, or need your attention.
Full transcripts	Every conversation saved and searchable.

Two ways to get started

Dashboard (no code needed)
API (for developers)

The visual builder is perfect for getting started — and honestly, most people never need anything else.

Sign in at blackbox.dasha.ai
Click Create Agent
Tell it what to say, pick a voice, choose an AI model
Test it right in your browser
When you’re happy, connect it to a phone number or your website

This is where most people start, especially if you’re not a developer. You can build something real in about 10 minutes.

If you want to automate things, integrate with your systems, or build at scale — the API gives you full control.

Example: Create an agent with code

const agent = await fetch('https://blackbox.dasha.ai/api/v1/agents', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    name: "Support Agent",
    config: {
      primaryLanguage: "en-US",
      llmConfig: {
        vendor: "openai",
        model: "gpt-4.1-mini",
        prompt: "You are a helpful support agent..."
      },
      ttsConfig: {
        vendor: "ElevenLabs",
        voiceId: "21m00Tcm4TlvDq8ikWAM"
      }
    }
  })
});
// Returns: { agentId: "agent_abc123", name: "Support Agent", ... }

What people are building

What you can do with it

Two ways to get started

Ready to try it?

Quickstart

Core concepts

Documentation Index

​What people are building

​What you can do with it

​Two ways to get started

​Ready to try it?

Quickstart

Core concepts

What people are building

What you can do with it

Two ways to get started

Ready to try it?