Model comparison
Compare Gemini 3.1 Flash Live Preview and Eleven v3 Conversational using the same provider-sourced voice & realtime rubric. No mystery score and no invented benchmark ranking.
Facts checked September 4, 2026
Quick take
Google's preview audio-to-audio model for low-latency dialogue with multimodal awareness, thinking, search grounding, and function calling.
The model is preview, and paid versus unpaid projects have different data-use terms. Confirm both before capturing sensitive conversations.
ElevenLabs' expressive realtime text-to-speech model for natural dialogue, emotional delivery, audio tags, and more than 70 languages.
It is not a complete speech-to-speech agent by itself. End-to-end latency also includes transcription, LLM response time, transport, and playback.
Compare the published facts
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 3.1 Flash Live Preview | Eleven v3 Conversational |
|---|---|---|
| Price basisToken-, character-, or minute-based price for the listed access route. | Audio $0.005/min in · $0.018/min out | $0.05 / 1K characters |
| Interaction modeSpeech-to-speech, audio-to-audio, or streamed text-to-speech behavior. | Realtime audio-to-audio, multimodal input | Realtime text-to-speech / text-to-dialogue |
| Published latencyProvider-published measurement with its stated exclusions; not a Cody test. | Not published | ~280ms, excluding app/network |
| LanguagesProvider-documented language coverage or a clear unpublished marker. | Multilingual; verify current Live API support | 70+ languages |
| Tools & controlNative function calling, reasoning, or speech-control features. | Function calling and search grounding | Audio tags; orchestration handled by your agent stack |
| Context or input limitDocumented token or character limit where it is meaningful. | 131,072 input · 65,536 output | 5K-character guidance for v3 family; verify endpoint |
How to choose
Start with the job you need to complete, then validate cost, access, and policy details on your exact provider route.
Google says paid Gemini API content is not used to improve its products; unpaid service data generally can be. Confirm billing status and current terms before sending sensitive conversations.
Provider and API links
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.
Provider and API links
Frequently asked questions
Gemini 3.1 Flash Live Preview: Google's preview audio-to-audio model for low-latency dialogue with multimodal awareness, thinking, search grounding, and function calling. Eleven v3 Conversational: ElevenLabs' expressive realtime text-to-speech model for natural dialogue, emotional delivery, audio tags, and more than 70 languages.
Consider Gemini 3.1 Flash Live Preview when your priority is Multimodal voice assistants. Consider Eleven v3 Conversational when your priority is Expressive support and assistant voices. Test both with your own data and provider route before committing.
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.
