Back to Voice & realtime
Model comparison
GPT-Live 1 vs Gemini 3.8 Live
Compare GPT-Live 1 and Gemini 3.8 Live using the same provider-sourced voice & realtime rubric. No mystery score and no invented benchmark ranking.
Quick take
GPT-Live 1
OpenAI's full-duplex voice frontend for natural conversation that delegates deeper reasoning and actions to a separate backend agent.
Best for
- Natural customer-service and scheduling calls
- Voice interfaces that must keep talking while work runs
- Teams that want to choose or operate the backend agent
Watch out for
Speech interruption does not automatically cancel backend work. Your application still owns permissions, confirmations, cancellation, durable task state, result validation, and playback safeguards.
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.
Compare the published facts
GPT-Live 1 vs Gemini 3.8 Live
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 | GPT-Live 1 | Gemini 3.8 Live |
|---|---|---|
| Price basisToken-, character-, or minute-based price for the listed access route. | $0.05 / voice minute + backend usage | Audio $0.005/min in · $0.018/min out |
| Interaction modeSpeech-to-speech, audio-to-audio, or streamed text-to-speech behavior. | Full-duplex voice frontend with delegated backend | Speech-to-speech with visual input and interleaved reasoning |
| Published latencyProvider-published measurement with its stated exclusions; not a Cody test. | Not published | Not published |
| LanguagesProvider-documented language coverage or a clear unpublished marker. | Multiple accents, dialects, and languages; exact list not published | 97 languages (Google launch claim) |
| Tools & controlNative function calling, reasoning, or speech-control features. | Responses or client delegation to backend agents and tools | Functions (async by default), search grounding |
| Context or input limitDocumented token or character limit where it is meaningful. | Not published | 131,072 input · 65,536 output |
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.
GPT-Live 1
OpenAI says API content is not used for training by default. Default abuse-monitoring logs may be retained up to 30 days, with additional controls available to qualifying organizations.
Provider and API links
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
Frequently asked questions
GPT-Live 1 vs Gemini 3.8 Live FAQ
What is the main difference between GPT-Live 1 and Gemini 3.8 Live?
GPT-Live 1: OpenAI's full-duplex voice frontend for natural conversation that delegates deeper reasoning and actions to a separate backend agent. Gemini 3.8 Live: Google's real-time voice model for responsive conversations with audio, text and visual context.
Should I choose GPT-Live 1 or Gemini 3.8 Live?
Consider GPT-Live 1 when your priority is Natural customer-service and scheduling calls. Consider Gemini 3.8 Live when your priority is Conversational customer support. Test both with your own data and provider route before committing.
Is this GPT-Live 1 vs Gemini 3.8 Live 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.