How Sigsen works
Understand assistants, channels, voice pipelines, knowledge retrieval and actions.
An assistant combines instructions, provider choices, knowledge and tools. A channel connects it to a browser, website widget, phone number or WhatsApp account.
The voice conversation
In Pipeline speech mode, a transcriber turns speech into text, the selected language model prepares a reply, and the voice provider synthesizes audio. LiveKit carries audio and Pipecat coordinates turns and tools.
In Realtime speech mode, a compatible OpenAI audio model handles speech directly. It has different voice choices and cannot run the checked-answer or structured-flow pipeline. See speech and conversation behaviour.
Text channels use the model without a live audio session. Voice notes additionally need transcription or synthesis, depending on the input and reply format.
Knowledge and tools
Knowledge retrieves relevant passages from selected documents. It does not prepend every uploaded file to every prompt. Public customers can use only sources approved for public use; validated answers additionally require reviewed, unexpired evidence and answer checks.
Tools request operations such as reading availability or submitting an API request. Assignment makes a tool available; it does not force execution. Actions still need their configured permissions and caller approval.
Drafts and releases
Save updates the draft. Talk tests that saved draft. Publish creates an immutable release for customer channels. A conversation retains its configuration snapshot, while current credential revocations and tool permissions still apply.
When answers differ between Talk and your website, compare the saved draft with the published release and check public document permissions.
Providers and usage
Your organisation connects its external provider accounts. The conversation services do not substitute another organisation's credentials.
Your plan controls access and limits. AI credits and the USD wallet track separate Sigsen usage. External model, speech, messaging and carrier invoices remain separate.