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Inworld AI

Mountain View, CA-based AI company founded in 2021. Private. Operates in voice AI and text-to-speech markets. Serves developers and enterprises with real-time TTS, voice cloning, and conversational AI APIs.

Entry price

$20.83

Creator · /mo, billed annually

Plans tracked

no add-ons

Pricing changes

Latest Wk 34 '26

Pricing model

Subscription

Free tier available

Pricing Change History

4 changes

20264 changes

Wk 34 '26

Improvement

Inworld AI: multilingual TTS language support expanded to 200+

Multilingual support consolidated and increased: previously listed separately as "TTS 1.5: 15 languages" and "TTS-2: over 100 languages", now shown as a single "200+ languages" figure.

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Wk 25 '26

Improvement

Inworld AI slashes TTS-2 to $25/1M chars, STT to $0.15/hr in price cuts

On-Demand plan free TTS included increased from 40 minutes to 70 minutes per month. Also, Builder tier adds 50 concurrent requests and 200 concurrent user sessions to the limits table. TTS-2 base rate cut from $35 to $25/1M chars; STT cut from $0.35 to $0.15/hr across all plans. Discounted rates also slashed: Developer TTS-2 now $15 (was $30), Growth $12.50 (was $25) per 1M chars.

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Wk 23 '26

Improvement

Inworld AI caps concurrent users at 20–2,000 across new plan tiers

New Limits section added to comparison table showing concurrent request limits (5/10/150/500/Custom) and estimated concurrent user sessions (20/40/600/2,000/Custom) per plan tier.

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Wk 19 '26

Improvement

Inworld AI slashes TTS Max rate 30% to $35/1M chars, reshuffles plan discounts

Enterprise plan value proposition changed: 'Significant discounts at scale' replaced with specific price commitment 'As low as $10/1M for Max & $5/1M for Mini'. Audio markups feature removed from TTS compare table. TTS Max base rate decreased from $50/1M chars to $35/1M chars across all plans. Discounted rates also adjusted: Developer plan $40→$30, Growth plan $30→$25.

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