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SPECIFICTION
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Inworld TTS

inworld.ai

From $25/mo Free plan WebAPI
Visit inworld.ai
Spec score 9.1 #12 of 233 in Text-to-speech tools

Spec sheet

Platforms
web,apiRead 20 Sep 2026 · inworld.ai
Free plan
YesRead 20 Sep 2026 · inworld.ai
Paid from
25Read 20 Sep 2026 · inworld.ai
Annual billing discount
Yearly billing offers two months free.Read 28 Sep 2026 · inworld.ai
API access
YesRead 20 Sep 2026 · inworld.ai
API streaming
The API streams audio chunks as the model generates them.Read 28 Sep 2026 · inworld.ai
Commercial use
YesRead 20 Sep 2026 · inworld.ai
Company foundation
Inworld AI copyright is shown as 2021-2026.Read 28 Sep 2026 · inworld.ai
Credit rollover
Unused subscription credits roll over for up to 3 months with an active qualifying subscription.Read 28 Sep 2026 · inworld.ai
Export formats
MP3,WAV,OpusRead 20 Sep 2026 · inworld.ai
Free STT limit
The On-Demand plan includes up to 400 minutes of STT for free.Read 28 Sep 2026 · inworld.ai
Free tier limit
The On-Demand plan includes up to 70 minutes of TTS.Read 28 Sep 2026 · inworld.ai
Healthcare compliance
HIPAA and BAA are available as add-ons on the Growth plan.Read 28 Sep 2026 · inworld.ai
Language support
The service supports 200+ languages with native-speaker quality and cross-lingual cloning.Read 28 Sep 2026 · inworld.ai
Languages
200Read 20 Sep 2026 · inworld.ai
Maximum input
40000Read 20 Sep 2026 · inworld.ai
Overage billing
Overage usage is charged at the same rate as the selected plan.Read 28 Sep 2026 · inworld.ai
Realtime TTS pricing
Realtime TTS-2 costs as low as $5 per million characters at scale.Read 28 Sep 2026 · inworld.ai
Security certifications
The pricing comparison lists GDPR and SOC 2 Type II.Read 28 Sep 2026 · inworld.ai
Support levels
Support ranges from community support to priority email, AM, and Slack support.Read 28 Sep 2026 · inworld.ai
TTS output formats
Supported output formats include MP3, Linear PCM (WAV), and Opus.Read 28 Sep 2026 · inworld.ai
Voice cloning
YesRead 20 Sep 2026 · inworld.ai
Voice cloning input
Custom voices can be created from 5 to 15 seconds of audio.Read 28 Sep 2026 · inworld.ai
Voice design
Voices can be generated from natural-language descriptions without an audio sample.Read 28 Sep 2026 · inworld.ai
Workspace collaboration
Creator and Builder plans include workspace creation, sharing, and team management.Read 28 Sep 2026 · inworld.ai

Plans and prices

On-Demand Free Start free; TTS-2 is $25 per 1M characters and TTS-2 Flash is $15 per 1M characters. Up to 70 min TTS included · 100 custom voices Evaluation and prototyping; starts free with up to 70 minutes of TTS included. Read 28 Sep 2026 · inworld.ai
Creator $25 a month billed monthly $25 credits per month · 500 custom voices · 40K chars per TTS Playground request Content creation and small projects; includes $25 in credits per month. Read 28 Sep 2026 · inworld.ai
Builder $100 a month billed monthly $100 credits per month · 3,000 custom voices Growing projects and small teams; includes $100 in credits per month. Read 28 Sep 2026 · inworld.ai
Developer $300 a month billed monthly $300 credits per month · 10,000 custom voices Production applications; includes $300 in credits per month. Read 28 Sep 2026 · inworld.ai
Growth $1,500 a month billed monthly $1,500 credits per month · 30,000 custom voices · 1 professional voice clone Large deployments and compliance; includes $1,500 in credits per month. Read 28 Sep 2026 · inworld.ai
Enterprise Priced on request Custom limits Custom pricing, limits, and terms; contact sales. Read 28 Sep 2026 · inworld.ai

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