Sistava is an AI workforce platform where solo founders hire AI employees to run their business around the clock. Each AI employee has a specific role like sales, marketing, or customer support, with real tool integrations, persistent memory, and the ability to work inside your existing apps like Slack, Gmail, and HubSpot.

What is an AI employee?

An AI employee is an autonomous AI agent with a defined role, persona, skill set, and tool access. Unlike a chatbot that only answers questions, an AI employee takes on recurring work like writing emails, qualifying leads, answering support tickets, and publishing content, and it works on its own around the clock without being prompted each time.

How is Sistava different from project management software?

Sistava is not project management software. You hire AI employees who do the work, not a tool that tracks work done by humans. Your AI employees run sales outreach, write marketing content, answer support tickets, and handle operations on their own, without constant supervision.

How much does Sistava cost?

Sistava has a free plan you can start without a credit card, plus paid plans that scale with how much work you hand to your AI employees. See the pricing page for current plans.

What can AI employees do on Sistava?

Your AI employees take on the recurring work that runs a business: qualifying and reaching out to leads, writing and publishing marketing content, answering support tickets, and handling day to day operations. Each one comes with a role and skill set, so it can start working the day you hire it.

Sistava is built for solo founders and small teams who need to run sales, marketing, support, and operations without hiring a full human team. It gives you the equivalent of a growth team you can hire in minutes.

The 6 Best AI Voice and Phone Platforms

Comparison — 2026-07-06 — by Mahmoud Zalt

The 6 best AI voice and phone platforms compared: Sistava, Bland, Retell, Synthflow, Vapi, and Krisp. Strengths, who each is for, and links to try each one.

AI voice platforms split into builders that help you ship a phone agent and infrastructure for developers. They are great at the voice layer, but you still design the logic and the job behind it. This list ranks six.

Sistava leads because the voice is just one channel for an AI employee that already owns the work, rather than a phone bot you build from scratch. Each platform links to its site and a full breakdown.

1. Sistava

Sistava gives you AI employees that own a role and can be reached across channels, with voice as one of them. Rather than building a standalone phone bot and wiring it to your systems, you hire an employee that already knows the job and works in your tools.

Key strengths:

Voice is one channel of a real AI employee
The employee already owns the underlying job
Works in your existing tools and guardrails

Best for:

Teams who want an employee, not a phone bot
Businesses adding voice to existing workflows
Anyone who wants the job done, not just answered

Explore Sistava · Hire AI Employee for free →

2. Bland AI

Bland is an enterprise AI phone-call automation platform delivered via API, priced per minute plus a monthly fee. It targets high-volume outbound and inbound calling.

Key strengths:

Enterprise phone automation via API
Scales to high call volume
Pay-as-you-go per-minute pricing

Best for:

High-volume calling operations
Developers building phone automations
Enterprises with calling at scale

Visit Bland AI · The full Sistava vs Bland AI comparison →

3. Retell AI

Retell is a developer-friendly voice agent builder with low latency around 600ms, priced pay-as-you-go. It is a strong base layer for building responsive voice agents.

Key strengths:

Low-latency voice (~600ms)
Developer-friendly builder
Flexible pay-as-you-go pricing

Best for:

Developers building voice agents
Use cases needing fast responses
Teams wanting metered pricing

Visit Retell AI · The full Sistava vs Retell AI comparison →

4. Synthflow

Synthflow is a no-code voice AI platform for SMEs and agencies, with tiered minute-based plans. It makes shipping a voice agent approachable without code.

Key strengths:

No-code voice agent builder
Tiered, minute-based plans
Aimed at SMEs and agencies

Best for:

Non-technical teams and agencies
Quick voice agent deployment
Predictable minute-based budgets

Visit Synthflow · The full Sistava vs Synthflow comparison →

5. Vapi

Vapi is a developer platform for production voice agents on phone and web, abstracting speech, LLM, and telephony into one API. It is infrastructure for builders.

Key strengths:

Unified voice infrastructure API
Production-grade for phone and web
Flexible, composable building blocks

Best for:

Developers building production voice
Teams wanting full control of the stack
Composable, API-first deployments

Visit Vapi · The full Sistava vs Vapi comparison →

6. Krisp AI

Krisp focuses on voice clarity: real-time noise cancellation, accent conversion, and AI meeting notes. It is a different job from agents, improving how human calls sound.

Key strengths:

Best-in-class noise cancellation
Accent conversion and call clarity
Adds AI meeting notes

Best for:

Teams improving human call quality
Remote and support agents on calls
Anyone wanting cleaner audio

Visit Krisp AI · The full Sistava vs Krisp AI comparison →

Picking between these comes down to whether you want to build a tool or hire someone to own the work. If you would rather meet the AI employees first, you can talk to one right now.

How to Choose

If you need to build a voice agent, Bland, Retell, Synthflow, and Vapi cover everything from no-code to full infrastructure, and Krisp is the pick for making human calls sound better. They handle the voice; you still design the job.

Sistava is for teams who want an employee that owns the work and happens to answer the phone, not a standalone bot to build and wire up. See every head-to-head on the comparison hub.

FAQ

What is the best AI voice platform for a non-technical team?

Synthflow is the most approachable no-code builder. For a team that wants the whole job owned rather than just a voice agent built, Sistava gives you an AI employee that works across channels including voice.

What is the difference between a voice agent builder and Sistava?

Builders like Bland, Retell, and Vapi give you the voice layer to design a phone agent. Sistava gives you an AI employee that already owns the underlying job, with voice as one of its channels.

Can I compare Sistava against these platforms?

Yes. Each platform here has a full side-by-side breakdown on the Sistava comparison hub, covering capabilities, pricing, and ideal fit.