Voice & Speech

Pie Tool Text To Speech

Text-to-Speech tool with word-level highlighting for PIE assessment player

Status
Generally available
Last checked
Checked · Oct 10, 2026
License
Open source
Pricing
Free tier · from $0
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What it is

A Text-to-Speech tool designed specifically for the PIE assessment player, offering word-level highlighting to enhance user interaction and understanding.

The only open-source Text-to-Speech tool offering word-level highlighting, specifically tailored for educational assessment players.

When it fits — and when it doesn’t

A good fit for

  • Educational software developers looking for an accessible TTS solution with visual cues

  • Developers integrating TTS into assessment tools where word-level feedback is crucial

Look elsewhere if

  • Projects requiring real-time speech synthesis without the need for highlighting

  • Applications that do not require integration with the PIE framework

Known weaknesses

Each one links to the public issue, changelog or docs page it came from, where we have one.

  1. 01

    Limited language support

    The tool primarily supports English and lacks extensive support for other languages, limiting its global usability.

  2. 02

    Complex setup process

    Setting up the environment requires configuring multiple dependencies specific to the PIE assessment player, which can be time-consuming and error-prone.

  3. 03

    Performance issues with large texts

    The tool experiences significant delays when processing large volumes of text, impacting real-time interaction capabilities.

  4. 04

    Small community support

    Limited contributions and updates from the open-source community result in slower resolution of issues and feature requests.

What it does well

  • Word-level highlighting for enhanced user interaction

  • Integration with PIE assessment player

  • Open-source and MIT licensed

Pricing

Free tier
YesOpen source — free to use
Paid from
$0
Model
Flat rate
Enterprise plan
No

Pricing not independently confirmed — check the vendor’s page.

Performance benchmarks

How Fast Is It?

Set up Pie Tool Text To Speech

Setup steps, common gotchas and what to check after 30 days.

Open the setup guide →
Get the badge

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Pie Tool Text To Speech — tracked on AI Navigator

Markdown

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HTML

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