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Model comparison
Gemini 3.8 Live vs Inworld Realtime TTS-2
Compare Gemini 3.8 Live and Inworld Realtime TTS-2 using the same provider-sourced voice & realtime rubric. No mystery score and no invented benchmark ranking.
Quick take
Gemini 3.8 Live
Google's real-time voice model for responsive conversations with audio, text and visual context.
Best for
- Conversational customer support
- Voice assistants with camera context
- Everyday tool-using voice agents
Watch out for
Audio input and output are charged separately, not as one flat call-minute price. Text, visual context, thinking and search can add to the bill.
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
Gemini 3.8 Live 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 | Gemini 3.8 Live | Inworld Realtime TTS-2 |
|---|---|---|
| Price basisToken-, character-, or minute-based price for the listed access route. | Audio $0.005/min in · $0.018/min out | $25 / 1M chars on demand; volume discounts |
| Interaction modeSpeech-to-speech, audio-to-audio, or streamed text-to-speech behavior. | Speech-to-speech with visual input and interleaved reasoning | Steerable realtime TTS with prior-audio context |
| Published latencyProvider-published measurement with its stated exclusions; not a Cody test. | Not published | Under 200ms median TTFA |
| LanguagesProvider-documented language coverage or a clear unpublished marker. | 97 languages (Google launch claim) | 100+ with mid-utterance switching |
| Tools & controlNative function calling, reasoning, or speech-control features. | Functions (async by default), search grounding | Voice direction, design, cloning, non-verbals |
| Context or input limitDocumented token or character limit where it is meaningful. | 131,072 input · 65,536 output | 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.
Gemini 3.8 Live
Google says paid Gemini API prompts and responses are not used to improve its products. Unpaid-service content generally may be used, with different treatment for EEA, UK, and Swiss users; check the current terms for your account and region.
Provider and API links
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
Gemini 3.8 Live vs Inworld Realtime TTS-2 FAQ
What is the main difference between Gemini 3.8 Live and Inworld Realtime TTS-2?
Gemini 3.8 Live: Google's real-time voice model for responsive conversations with audio, text and visual context. 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 Gemini 3.8 Live or Inworld Realtime TTS-2?
Consider Gemini 3.8 Live when your priority is Conversational customer support. 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 Gemini 3.8 Live 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.