What is Realtime TTS-2?
Inworld's low-latency text-to-speech for live conversation in 100+ languages.
Who is Realtime TTS-2 best for?
Realtime TTS-2 is best for developers building voice agents and game characters that need expressive live speech.
Voice agents and support lines
It hears the audio of earlier turns in a session, so a frustrated caller gets a slower, softer reply without extra code.
Directed character voices
Plain-English stage directions in brackets, such as a whisper or a tired read, change how the same voice delivers a line.
Multilingual apps
One voice keeps the same identity across more than 100 languages, even when a single reply switches language.
Custom brand voices
Voice cloning and voice design from a written description are included from the free On-Demand plan.
How much does Realtime TTS-2 cost?
Realtime TTS-2 costs $25 per million characters (roughly 1,000 minutes of audio) on Inworld's pay-as-you-go On-Demand plan, and monthly plans from $25 to $300 lower that rate to between $20 and $15.
- Realtime TTS-2 at $25 per 1M characters
- Up to 70 minutes of TTS free
- 100 custom voices, voice cloning and voice design
- $25 of credits a month
- Realtime TTS-2 at $20 per 1M characters
- 500 custom voices, shared workspaces
- $100 of credits a month
- Realtime TTS-2 at $17.50 per 1M characters
- 3,000 custom voices, 50 concurrent requests
- $300 of credits a month
- Realtime TTS-2 at $15 per 1M characters
- 10,000 custom voices, priority email support
Growth is $1,500 a month with $1,500 of credits and Realtime TTS-2 at $12.50 per 1M characters; Enterprise is priced on request, from $5 per 1M characters. Paying yearly gives 2 months free, so Creator works out at $20.83, Builder $83.33, Developer $250 and Growth $1,250 a month. Inworld counts about 1,000 characters per minute of audio. The faster TTS-2 Flash model costs $15 per 1M characters on On-Demand and $10 to $7 on paid plans. Unused plan credits roll over for up to 3 months. Full pricing on inworld.ai. We checked these prices on .
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What are the best Realtime TTS-2 alternatives?
One tool on Recaply does Realtime TTS-2's job. It is open source, so you can run it on your own server.
Questions about Realtime TTS-2
What is Realtime TTS-2?
Inworld's low-latency text-to-speech for live conversation in 100+ languages.
Who is Realtime TTS-2 for?
Realtime TTS-2 is best for developers building voice agents and game characters that need expressive live speech.
Is Realtime TTS-2 free?
Only to start. Inworld's On-Demand plan costs nothing to open and includes up to 70 minutes of text-to-speech free. After that Realtime TTS-2 is billed at $25 per million characters, and paid plans from $25 a month add credits and lower rates.
How much does Realtime TTS-2 cost?
Realtime TTS-2's paid plans are Creator at $25 per month, Builder at $100 per month and Developer at $300 per month.
Is there an open source alternative to Realtime TTS-2?
Yes. ZONOS2 is an open source tool that does the same job, so you can run your own.
What are the best Realtime TTS-2 alternatives?
The closest alternatives on Recaply are ZONOS2.
Where can I try Realtime TTS-2?
On its official website, inworld.ai.
How do Inworld credits work for Realtime TTS-2?
Each paid Inworld plan adds credits equal to its price every month, spent on Realtime TTS-2 and Inworld's other APIs at that plan's rates. Unused credits roll over for up to 3 months while you stay subscribed, and extra credits can be bought from $10 or topped up automatically.
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