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Model comparison
Eleven v4 Turbo vs Inworld Realtime TTS-2
Compare Eleven v4 Turbo and Inworld Realtime TTS-2 using the same provider-sourced voice & realtime rubric. No mystery score and no invented benchmark ranking.
Quick take
Eleven v4 Turbo
A low-latency speech model for assistants and interactive characters that need an expressive speaking voice.
Best for
- Voice assistants
- Interactive characters
- Multilingual support agents
Watch out for
Measure the complete conversation, not just speech generation. Transcription, reasoning, network travel and playback all add delay. Voice cloning requires the speaker's consent.
Inworld Realtime TTS-2
Inworld's newest expressive realtime text-to-speech model, designed to remember conversational delivery and speak in more than 100 languages.
Best for
- Realtime companions and support voices
- Multilingual experiences with one consistent voice
- Creative voice direction and authorized cloning
Watch out for
This is the speech layer, not a complete agent. Inworld's current zero-data-retention page does not explicitly list TTS-2, so confirm coverage before sending sensitive text or voice data.
Compare the published facts
Eleven v4 Turbo vs Inworld Realtime TTS-2
Values use each provider's own published units and limits. A blank means the provider did not publish a directly comparable value in the sources reviewed.
| Voice & realtime | Eleven v4 Turbo | Inworld Realtime TTS-2 |
|---|---|---|
| Price basisToken-, character-, or minute-based price for the listed access route. | $0.04 / 1,000 characters | $25 / 1M chars on demand; volume discounts |
| Interaction modeSpeech-to-speech, audio-to-audio, or streamed text-to-speech behavior. | Realtime text-to-speech / text-to-dialogue | Steerable realtime TTS with prior-audio context |
| Published latencyProvider-published measurement with its stated exclusions; not a Cody test. | ~100ms median inference (provider-reported) | Under 200ms median TTFA |
| LanguagesProvider-documented language coverage or a clear unpublished marker. | 90+ languages | 100+ with mid-utterance switching |
| Tools & controlNative function calling, reasoning, or speech-control features. | Audio tags, voice cloning and pronunciation dictionaries | Voice direction, design, cloning, non-verbals |
| Context or input limitDocumented token or character limit where it is meaningful. | Not published | Not published |
How to choose
Compare the job, not the hype.
Start with the job you need to complete, then validate cost, access, and policy details on your exact provider route.
Eleven v4 Turbo
ElevenLabs says enterprise customer data is not used for training by default. Other users can opt out of model improvement; enterprise zero-retention and regional environments are available with plan-specific limits.
Inworld Realtime TTS-2
Inworld advertises zero data retention as an enterprise add-on, but its currently published ZDR support page names only TTS-1.5 Mini and Max. Confirm TTS-2 coverage directly before sending regulated or confidential text.
Frequently asked questions
Eleven v4 Turbo vs Inworld Realtime TTS-2 FAQ
What is the main difference between Eleven v4 Turbo and Inworld Realtime TTS-2?
Eleven v4 Turbo: A low-latency speech model for assistants and interactive characters that need an expressive speaking voice. Inworld Realtime TTS-2: Inworld's newest expressive realtime text-to-speech model, designed to remember conversational delivery and speak in more than 100 languages.
Should I choose Eleven v4 Turbo or Inworld Realtime TTS-2?
Consider Eleven v4 Turbo when your priority is Voice assistants. Consider Inworld Realtime TTS-2 when your priority is Realtime companions and support voices. Test both with your own data and provider route before committing.
Is this Eleven v4 Turbo vs Inworld Realtime TTS-2 comparison based on Cody benchmarks?
No. This comparison aligns provider-published facts for the Voice & realtime category. It does not claim a universal winner or combine incompatible third-party benchmark scores.