Inworld · First-party API · TTS

inworld-tts-2

Capability changeCapability change announced Aug 9, 2026

Capability change announced Aug 9, 2026 for inworld-tts-2 on Inworld. Source: docs.inworld.ai · Last checked Oct 15, 2026

3 notices

Capability change

Capability change announced Aug 9, 2026

Inworld documents a capability change: “Launched Realtime TTS-2 Flash (inworld-tts-2-flash), the fastest member of the TTS-2 family — see Models: Our lowest latency: 20 ms time to first audio…”

Hosting route
First-party API
Affected scope
Not stated in the notice
Announced
Aug 9, 2026
First seen by ModelClock
Oct 13, 2026

What the provider published

docs.inworld.ai ↗

Launched Realtime TTS-2 Flash (inworld-tts-2-flash), the fastest member of the TTS-2 family — see Models:

  • Our lowest latency: 20 ms time to first audio (server-side P90 TTFB, excluding network latency) — 5× faster than inworld-tts-2 at 100 ms, making it the best choice for latency-critical real-time agents.

  • Full TTS-2 language coverage: The same 200+ languages and locales as inworld-tts-2, plus instant voice cloning and timestamp alignment.

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

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Capability change

Capability change announced Aug 6, 2026

Inworld documents a capability change: “2026-08-06 Steering instructions now persist Steering on inworld-tts-2 follows one rule: a [tag] applies from where you write it until you change it.”

Hosting route
First-party API
Affected scope
Not stated in the notice
Announced
Aug 6, 2026
First seen by ModelClock
Oct 13, 2026

What the provider published

docs.inworld.ai ↗

2026-08-06

Steering instructions now persist

Steering on inworld-tts-2 follows one rule: a [tag] applies from where you write it until you change it. See the Steering guide.

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

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Release announced

Released on May 5, 2026

Inworld announced this model on 2026-05-05.

Hosting route
First-party API
Affected scope
Not stated in the notice
Announced
May 5, 2026
First seen by ModelClock
Oct 13, 2026

What the provider published

docs.inworld.ai ↗

Launched Realtime TTS-2 (inworld-tts-2), our most powerful and expressive TTS model:

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

Revision history

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inworld-tts-2 shutdown date

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