kitio.aiInworld AI vs Acoust
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Acoust has the lower starting price: about $9 a month, against $25 for Inworld AI.
Realtime text-to-speech, speech-to-text and LLM inference for consumer apps
Freemium · $25/moAt a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Realtime TTS-2 and TTS-2 Flash
- Speech-to-text
- Speech-to-speech
- Voice cloning and design
- Open LLM inference
- Credit rollover
- 100+ AI voices in 30+ languages
- Voice cloning from a short sample
- Tone and emotion controls
- SRT subtitle export
- AI clips from long videos
- Built-in video editor
| Feature | Inworld AI | Acoust |
|---|---|---|
| Best for | Realtime text-to-speech, speech-to-text and LLM inference for consumer apps | AI voice generator with voice cloning and a built-in video editor |
| Category | Audio & voice | Audio & voice |
| Pricing model | Freemium | Freemium |
| Starting price | $25/mo | $9/mo |
| Free plan | Yes | Yes |
| Made by | Inworld AI | Acoust |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Acoust has the lower starting price: about $9 a month, against $25 for Inworld AI.
Free plan
Cheapest paid plan
Top plan
Free trial
6 plans
On-Demand
$25 / 1M characters (TTS-2)
- Pay as you go
- Up to 70 min TTS included
- 2 professional voice clones
Creator
$25/mo
- $25 in credits per month
- Up to 33% off TTS and STT
- 4 professional voice clones
Builder
$100/mo
- $100 in credits per month
- Up to 40% off TTS and STT
- 10 professional voice clones
Developer
$300/mo
- $300 in credits per month
- Up to 47% off TTS and STT
- Priority email support
Growth
$1500/mo
- $1,500 in credits per month
- Up to 53% off TTS and STT
- Higher API limits
Enterprise
Custom
- TTS-2 from $5 per 1M characters
- SLA and data residency
4 plans
Personal
Free
- 10K credits
- Not for commercial use
Pro
$9/mo
- 180K credits per month
- Up to 180 voice minutes
- Up to 90 cloning minutes
- SRT subtitles and commercial use
Premium
$29/mo
- 600K credits per month
- Up to 600 voice minutes
- AI Clips
- 60 minutes of transcription
Enterprise
Contact sales
- Team accounts with pooled credits
- SSO
- Custom quotas
Prices in USD, checked Oct 29, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Inworld AI
- Very low latency for live voice
- Pay-as-you-go option
- Unused credits roll over
- Best rates need large commitments
- HIPAA and ZDR are add-ons
- Developer-oriented, no consumer app
Acoust
- Free plan with 10K credits
- Voice clone works across languages
- Low entry price for commercial use
- Free plan excludes commercial use
- Voice and cloning minutes are capped monthly
- AI Clips is still in beta
Which one should you choose?
Choose Inworld AI if you want:
- Very low latency for live voice
- Pay-as-you-go option
- Unused credits roll over
Watch out: best rates need large commitments.
Choose Acoust if you want:
- Free plan with 10K credits
- Voice clone works across languages
- Low entry price for commercial use
Watch out: free plan excludes commercial use.
Inworld AI vs Acoust FAQ
What is the difference between Inworld AI and Acoust?
Inworld AI: Realtime text-to-speech, speech-to-text and LLM inference for consumer apps. Acoust: AI voice generator with voice cloning and a built-in video editor. Both are audio & voice tools.
Is Inworld AI or Acoust cheaper?
Acoust has the lower starting price: about $9 a month, against $25 for Inworld AI.
Do Inworld AI and Acoust have free plans?
Inworld AI: Yes. Acoust: Yes.
Who makes Inworld AI?
Inworld AI is made by Inworld AI, based in United States.
Who makes Acoust?
Acoust is made by Acoust.
Which should I choose, Inworld AI or Acoust?
Choose Inworld AI if you value very low latency for live voice and pay-as-you-go option. Choose Acoust if you value free plan with 10k credits and voice clone works across languages.