> ## AI Agent Context > Get the complete documentation index at: https://aistudio.google.com/llms.txt > Use this file to discover all available pages. > For the full documentation in a single file, fetch: https://aistudio.google.com/llms-full.txt # Gemini 3.1 Flash live preview Gemini 3.1 Flash Live Preview is our legacy preview audio-to-audio model for real-time dialogue and voice-first AI applications. {% callout type="note" %} For new applications and production workloads, we recommend migrating to [Gemini 3.8 Live](/docs/models/gemini-3.8-live) (`gemini-3.8-live`) or [Gemini 3.8 Live Extended Thinking](/docs/models/gemini-3.8-live-extended-thinking) (`gemini-3.8-live-extended-thinking`). {% /callout %} {% button href="https://aistudio.google.com/live?model=gemini-3.1-flash-live-preview" variant="ais" %} Try in Google AI Studio {% /button %} ## Documentation {% id="documentation" %} Visit the [Live API](/docs/live-api) guide for full coverage of features and capabilities. ## gemini-3.1-flash-live-preview {% id="gemini-31-flash-live-preview" %} {% table variant="model" %} * Property * Description --- * {% section class="model-property" %} {% icon name="id_card" /%}Model code {% /section %} * `gemini-3.1-flash-live-preview` --- * {% section class="model-property" %} {% icon name="save" /%}Supported data types {% /section %} * **Inputs** Text, images, audio **Output** Text and audio --- * {% section class="model-property" %} {% icon name="token_auto" /%}Token limits{% sup %}[[*]](/docs/tokens){% /sup %} {% /section %} * **Input token limit** 131,072 **Output token limit** 65,536 --- * {% section class="model-property" %} {% icon name="handyman" /%}Capabilities {% /section %} * {% section class="three-column-grid" %} {% section %} [**Audio generation**](/docs/speech-generation) {% badge type="supported" /%} {% /section %} {% section %} [**Batch API**](/docs/batch-api) {% badge type="not-supported" /%} {% /section %} {% section %} [**Caching**](/docs/caching) {% badge type="not-supported" /%} {% /section %} {% section %} [**Code execution**](/docs/code-execution) {% badge type="not-supported" /%} {% /section %} {% section %} [**File search**](/docs/file-search) {% badge type="not-supported" /%} {% /section %} {% section %} [**Function calling**](/docs/function-calling) {% badge type="supported" /%} {% /section %} {% section %} [**Grounding with Google Maps**](/docs/maps-grounding) {% badge type="not-supported" /%} {% /section %} {% section %} [**Image generation**](/docs/image-generation) {% badge type="not-supported" /%} {% /section %} {% section %} [**Live API**](/docs/live-api) {% badge type="supported" /%} {% /section %} {% section %} [**Search grounding**](/docs/google-search) {% badge type="supported" /%} {% /section %} {% section %} [**Structured outputs**](/docs/structured-output) {% badge type="not-supported" /%} {% /section %} {% section %} [**Thinking**](/docs/thinking) {% badge type="supported" /%} {% /section %} {% section %} [**URL context**](/docs/url-context) {% badge type="not-supported" /%} {% /section %} {% /section %} --- * {% section class="model-property" %} {% icon name="123" /%}Versions {% /section %} * Read the [model version patterns](/docs/models#model-versions) for more details. * Preview: `gemini-3.1-flash-live-preview` --- * {% section class="model-property" %} {% icon name="calendar_month" /%}Latest update {% /section %} * March 2026 --- * {% section class="model-property" %} {% icon name="id_card" /%}Model card {% /section %} * [Model card](https://deepmind.google/models/model-cards/gemini-3-1-flash-audio/) --- * {% section class="model-property" %} {% icon name="paid" /%}Pricing {% /section %} * [Pricing](/docs/pricing#gemini-3.8-live) {% /table %} ## Migrating from Gemini 2.5 Flash Live {% id="migrating" %} Gemini 3.1 Flash Live Preview is optimized for low-latency, real-time dialogue. When migrating from `gemini-2.5-flash-native-audio-preview-12-2025`, consider the following: - **Model string**: Update your model string from `gemini-2.5-flash-native-audio-preview-12-2025` to `gemini-3.1-flash-live-preview`. - **Thinking configuration**: Gemini 3.1 uses `thinkingLevel` (with settings like `minimal`, `low`, `medium`, and `high`) instead of `thinkingBudget`. The default is `minimal` to optimize for lowest latency. See [Thinking levels and budgets](/docs/thinking?generate-content=true#levels-budgets). - **Server events**: A single [`BidiGenerateContentServerContent`](https://ai.google.dev/api/live#bidigeneratecontentservercontent) event can now contain multiple content parts simultaneously (for example, audio chunks and transcript). Update your code to process all parts in each event to avoid missing content. - **Client content**: `send_client_content` is supported for appending text or structured context turns mid-session as well as seeding initial history (setting [`initial_history_in_client_content`](https://ai.google.dev/api/live#HistoryConfig) in [`history_config`](https://ai.google.dev/api/live#BidiGenerateContentSetup)). You can also use [`send_realtime_input`](https://ai.google.dev/api/live#bidigeneratecontentrealtimeinput) to stream realtime text, audio, or video chunks. See [Incremental content updates](/docs/live-api/capabilities#incremental-updates). - **Turn coverage**: Defaults to [`TURN_INCLUDES_AUDIO_ACTIVITY_AND_ALL_VIDEO`](https://ai.google.dev/api/live#turncoverage) instead of `TURN_INCLUDES_ONLY_ACTIVITY`. The model's turn now includes detected audio activity and all video frames. If your application currently sends a constant stream of video frames, you may want to update your application to only send video frames when there is audio activity to avoid incurring additional costs. - **Async function calling**: Not yet supported. Function calling is synchronous only. The model will not start responding until you've sent the tool response. See [Async function calling](/docs/live-api/tools#async-function-calling). - **Proactive audio and affective dialogue**: These features are not yet supported in Gemini 3.1 Flash Live. Remove any configuration for these features from your code. See [Proactive audio](/docs/live-api/capabilities#proactive-audio) and [Affective dialogue](/docs/live-api/capabilities#affective-dialog). For a detailed feature comparison, see the [Model comparison](/docs/live-api/capabilities#model-comparison) table in the capabilities guide.