Advanced settings

Choose the AI model and fine-tune call behavior.

The Advanced settings card on the Receptionists page opens Model & call behavior. Most businesses never need to change these defaults.

Model

Select the language model that powers your receptionist’s conversations. Faster models reduce response time; larger models handle complex instructions better.

Family	Models
Gemini	Gemini 3 Flash, 3.5 Flash, 3.6 Flash, 3.7 Flash, 3.8 Flash, 3.1 Flash Lite, 3.5 Flash Lite
GPT	GPT-5.4 Mini, GPT-5.4 Nano
Claude	Claude Haiku 4.5, Claude Haiku 5.5, Claude Sonnet 5
Qwen	Qwen3.5-397B-A17B, Qwen3.6-35B-A3B

New receptionists start on Claude Haiku 5.5. Existing receptionists keep the model they use.

Reasoning effort

Controls how much the model thinks before responding. The available options depend on the model, up to Medium. New receptionists use Low. Higher effort can improve accuracy on complex procedures but increases response time. Some models do not support this setting.

Call behavior

Setting	Default	Description
Filter background speech	On	Filters out distant voices in the background so the receptionist only responds to the caller.
Response speed	Eager	How quickly the receptionist decides the caller has finished speaking: Eager (default), Normal, or Patient. Patient waits longer before replying.
Skip retrieval (RAG)	Off	Puts your whole knowledge base in the prompt instead of searching it on each turn. This lowers response time. The knowledge base must be under 2,000,000 characters and 2,000 documents in total; if it’s larger, the setting can’t be saved.
Allow playing touch tones (DTMF)	Off	Lets the receptionist press keypad tones, for example to navigate an automated phone menu. Also enables Digits to dial after connecting on transfer rules.
Hold sound	No sound	What the caller hears while the receptionist looks something up, including while it uses tools from your webhook and MCP server integrations: No sound, Typing, or Hold music 1–4. Marked Workspace: it applies to every receptionist.

After changing the model or reasoning effort, test your receptionist on a few typical calls to confirm response time and accuracy.