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Gradium · First-party API · LLM

Phonon

Capability changeCapability change announced Oct 20, 2026

Capability change announced Oct 20, 2026 for Phonon on Gradium. Source: gradium.ai · Last checked Oct 23, 2026

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3 notices

Capability change

Capability change announced Oct 20, 2026

Gradium documents a capability change: “Phonon is the open release of the model we announced in April [1] .”

Hosting route
First-party API
Affected scope
Not stated in the notice
Announced
Oct 20, 2026
First seen by ModelClock
Oct 20, 2026

What the provider published

gradium.ai ↗

Phonon is the open release of the model we announced in April [1] .

Read from the provider's text; the quote is the provider's exact lines.

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Capability change

Capability change announced Jul 21, 2026

Gradium documents a capability change: “Introducing Gratium → Gradium Phonon, our first on-device Text-To-Speech model.”

Hosting route
First-party API
Affected scope
Not stated in the notice
Announced
Jul 21, 2026
First seen by ModelClock
Oct 20, 2026

What the provider published

gradium.ai ↗

Introducing Gratium → Gradium Phonon, our first on-device Text-To-Speech model.

Read from the provider's text; the quote is the provider's exact lines.

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Release announced

Released on Jan 15, 2026

Gradium announced this model on 2026-01-15.

Hosting route
First-party API
Affected scope
Not stated in the notice
Announced
Jan 15, 2026
First seen by ModelClock
Oct 20, 2026

What the provider published

gradium.ai ↗

New Introducing Phonon ・ Our first open, on-device TTS model

Read from the provider's text; the quote is the provider's exact lines.

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Phonon shutdown date

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[![Phonon shutdown date](https://model-clock.com/badge/gradium/Phonon.svg)](https://model-clock.com/models/gradium/Phonon)
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<a href="https://model-clock.com/models/gradium/Phonon"><img src="https://model-clock.com/badge/gradium/Phonon.svg" alt="Phonon shutdown date"></a>

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Same model elsewhere

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