Not precisely yet, but, to me tool calls are really really quick. Assistant finds everything in KB too. I'm testing Models to see how cheap I can go... Open AI models seem faster than Anthropic's. Is that your opinion? Stack here : Vapi, 1 assistant, 1 n8n MCP tool who does everything except giving informations (used when client is identified or created), Supabase for storage only. French only (for now) Assistant.