Generate high-quality speech from text in seconds
50+ AI voices · 8 languages · 7 audio formats
Plans & Pricing
Choose the plan that best fits your workflow.
Free
For testing
Up to 1,000 characters per convert
- 10,000 credits/month
- 20+ AI Voices
- 5 Languages
- MP3 format
- Speed control (0.5x–4.0x)
- Cloud Storage & Sync
- Streaming
- Word Timestamps
PRO
For creators
Up to 3,000 characters per convert
- 100,000 credits/month
- 1GB Cloud Storage
- 50+ AI Voices
- 8 Languages
- All 7 audio formats
- Speed control (0.5x–4.0x)
- Streaming
- Word Timestamps
MAX
For professionals
Up to 5,000 characters per convert
- 200,000 credits/month
- 2GB Cloud Storage
- 50+ AI Voices
- 8 Languages
- All 7 audio formats
- Speed control (0.5x–4.0x)
- Streaming
- Word Timestamps
Custom
For teams & enterprise
Unlimited characters per convert
- Everything in PRO & MAX
- Custom credit quota
- Dedicated infrastructure
- Custom voice cloning
- SLA & uptime guarantee
- Priority support
- Custom integrations
Compare All Features
A detailed breakdown of what each plan includes.
Developer & API
Build with sonna.ai. Integrate ultra-realistic TTS directly into your applications.
API Free
Pay-as-you-go
For developers building projects with Voice AI.
Get API Key- OpenAI & ElevenLabs compatible
- 50+ AI Voices
- 8 Languages
- MP3, WAV, OGG, AAC, OPUS
- Speed control (0.5x - 4.0x)
- Streaming support
- REST API access
API Pro
Volume pricing
For teams scaling their voice AI products.
Get API Key- Everything in API Free
- Word-level timestamps
- All 7 audio formats
- SSML & pronunciation control
- Higher rate limits
- Priority support
- Commercial license
Enterprise
Custom solutions
For organizations with high-volume needs.
- Everything in API Pro
- Volume discounts
- Custom voice cloning
- Dedicated infrastructure
- SLA & uptime guarantee
- Dedicated account manager
- Custom integrations
Frequently Asked Questions
Everything you need to know about sonna.ai.
How are credits calculated?
Credits are counted based on the text input you provide, including spaces and punctuation. For example, 'Hello world!' is 12 credits. Each plan has a monthly credit quota that resets at the start of your billing cycle.
What languages and voices are supported?
We support 8 languages: English (US & UK), Japanese, Chinese, Spanish, French, Hindi, Italian, and Portuguese (Brazil). You can choose from 50+ different AI voices across these languages.
What audio formats can I download?
Depending on your plan, you can export audio in MP3, WAV, OGG, AAC, FLAC, OPUS, and PCM formats. Free plan supports MP3 only, while PRO and MAX plans include all 7 formats.
What is the difference between Platform plans and API plans?
Platform plans are for users who want to use our web interface to convert text to speech. API plans are for developers who want to integrate sonna.ai's TTS capabilities directly into their own applications via REST API.
Can I upgrade or downgrade my plan?
Yes, you can change your plan at any time. When upgrading, you'll get immediate access to the new features. When downgrading, the change takes effect at the start of your next billing cycle.