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Voice Characters

Test voice agents before launch, monitor live calls.

Checked 5 Oct 2026 Reviewed by Alex Listed since October 2024

Screenshot of Voice Characters

At a glance

Starts at Free No paid plan found on the vendor's site, September 2026.
Free tier Yes
Platforms Web, macOS, Windows
Best for High-growth startups and banks
Not for Small businesses with limited resources

4.0 out of 5

Scored by Alex after real use

Our verdict

A comprehensive platform for enterprise-grade testing and monitoring of voice agents. Not ideal for small businesses or simple chatbot solutions.

✓What it does well

Testing simulationsAutomatically generate up to 50K concurrent test calls.
Live monitoringDetect silent drift and unverified bookings in real-time production traffic.
Red teamingRun adversarial scenarios to identify potential breaches and failures.

✕Where it falls short

Limited languagesDoes not support all language dialects or accents beyond a certain list.
CI/CD integrationRequires manual setup for continuous integration, does not offer out-of-the-box CI/CD hooks.
Custom promptsCannot create custom prompts or scenarios beyond the predefined set of metrics and tests.

Key features

ScenariosAuto-generate thousands of test scenarios based on your input.
MetricsScore calls using over 50 built-in metrics to assess performance.
MonitoringContinuously monitor live production calls for issues like silent drift or unauthorized changes.
Customizable Scenariosallows creation of specific test cases

Questions about Voice Characters

What does Voice Characters do?

Voice Characters is a platform for enterprise-grade testing and monitoring of voice agents. It tests voice agents before launch by generating up to 50K concurrent test calls, then monitors live production calls for issues such as silent drift and unverified bookings.

Is Voice Characters free?

Yes. Voice Characters has a free tier, and no paid plan was found on the vendor's site in September 2026. The platform runs on the web, macOS and Windows, and Alex scored it 4.0 out of 5 after real use.

Who is Voice Characters for?

Voice Characters is aimed at high-growth startups and banks. The reviewer says it is not ideal for small businesses or simple chatbot solutions, and Toolio lists small businesses with limited resources as a poor fit.

How does Voice Characters evaluate calls?

Voice Characters scores calls using over 50 built-in metrics and auto-generates thousands of test scenarios based on user input. It also supports red teaming, running adversarial scenarios to identify potential breaches and failures.

What are the downsides of Voice Characters?

The reviewer notes that Voice Characters does not support every language dialect or accent beyond a certain list. Continuous integration also needs manual setup, since there are no out-of-the-box CI/CD hooks. Toolio has listed Voice Characters since October 2024.

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