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How Model Configuration Works

SentiVue Talk uses a two-level configuration system for AI models:
  1. Global configuration — A single set of model settings (LLM, TTS, STT) that applies to all workflows by default.
  2. Workflow-level overrides — Optional per-agent settings that override the global configuration for specific services.
If no overrides are set for a workflow, it uses the global configuration as-is.
Workflow-level overrides are selective — you can override only the services you want to change. For example, you can override just the LLM provider for a specific workflow while keeping the global TTS and STT settings. There is no need to reconfigure every service.

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Global Configuration

The global configuration is the default model setup shared across all your workflows. SentiVue Talk ships with its own models by default, so you get model credits to start with as soon as you sign up. To configure the global models, go to Model Configurations in your dashboard. From here you can configure each service: Select a provider, then choose the model, voice, or language you want. Credentials are not set here — add the provider once under Connections and it becomes available to select.

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Per-workflow overrides

You can override the global model configuration for any individual workflow. This is useful when different workflows have different requirements — for example, a customer support workflow might use a faster, cheaper LLM while a sales workflow uses a more capable one.

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Configuring overrides

  1. Open the workflow you want to customize.
  2. Go to Settings in the workflow detail page.
  3. Select the Model Overrides tab.
  4. You will see tabs for each service: LLM, Voice (TTS), Transcriber (STT), and Avatar.
  5. Toggle Override on for the service you want to change.
  6. Configure the provider, model, and other settings as needed.
  7. Save your changes.

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Selective overrides

Each service can be toggled independently. When an override is off for a service, the workflow inherits the global setting for that service. When an override is on, the workflow uses the override setting instead. For example, if you only want to change the voice for one workflow:
  1. Leave the LLM and Transcriber overrides off.
  2. Toggle the Voice override on.
  3. Select a different TTS provider or voice.
  4. That workflow uses your custom voice while keeping the global LLM and STT.

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Realtime mode override

You can also switch an individual workflow to use a Realtime provider (such as Gemini Live) even if the global configuration uses standard LLM + TTS + STT. Toggle the Realtime switch in the Model Overrides tab, then configure the realtime provider, model, and voice.
When a workflow uses a Realtime provider, it replaces the separate TTS and STT services with a single speech-to-speech model. An LLM is still required alongside the Realtime model — it’s used for out-of-band tasks like variable extraction and QA analysis, which the realtime service does not handle. Context compaction is not applicable in Realtime mode and is ignored if enabled.

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Avatars

An avatar adds an animated video presenter to a web call. Pick one in the Avatar step, then switch it on wherever the call starts — see Avatar.