Freemium
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Pricing
Freemium
Use cases
Developers building applications that require high-quality speech synthesis on devices without dedicated GPU hardware (verified: 2026-01-29), Software engineers integrating lightweight text-to-speech capabilities into resource-constrained environments using a 15 million parameter model (verified: 2026-01-29), Creators needing to generate audio files from text using specific male or female expressive voice presets (verified: 2026-01-29)
Strengths
The model is ultra-lightweight with a total size of less than 25MB for easy deployment (verified: 2026-01-29), The system is CPU-optimized to allow for real-time speech synthesis without the need for a GPU (verified: 2026-01-29), Users can choose from eight distinct expressive voice options including both male and female variants (verified: 2026-01-29)
Limitations
The software is currently in developer preview and has not yet released fully trained model weights (verified: 2026-01-29), Installation requires a specific wheel file URL rather than a standard package manager repository entry (verified: 2026-01-29)
Last verified
Jan 29, 2026
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Strengths
- The model is ultra-lightweight with a total size of less than 25MB for easy deployment (verified: 2026-01-29)
- The system is CPU-optimized to allow for real-time speech synthesis without the need for a GPU (verified: 2026-01-29)
- Users can choose from eight distinct expressive voice options including both male and female variants (verified: 2026-01-29)
Limitations
- The software is currently in developer preview and has not yet released fully trained model weights (verified: 2026-01-29)
- Installation requires a specific wheel file URL rather than a standard package manager repository entry (verified: 2026-01-29)
FAQ
What are the hardware requirements for running KittenTTS on a local machine?
KittenTTS is designed to work on any device because it is CPU-optimized. It does not require a GPU to function, making it suitable for hardware with minimal computing resources. This optimization ensures that the tool can perform real-time speech synthesis on standard processors without specialized hardware acceleration (verified: 2026-01-29).
How many different voice options are available for selection within the current version?
The current version provides eight available voices, labeled from expr-voice-2-m to expr-voice-5-f, covering a range of male and female expressive tones. These premium voice options are built into the lightweight model to provide high-quality synthesis for various developer needs and application scenarios (verified: 2026-01-29).
Is the source code for KittenTTS available for public use and modification?
Yes, KittenTTS is an open-source project hosted on GitHub, allowing developers to access the code and integrate it into their own Python-based workflows. The project is currently in a developer preview phase, which means users can test the initial model while waiting for future weight releases (verified: 2026-01-29).
