Session Duration

Duration limit

Control how long a session stays active with maxSessionLengthSeconds. The countdown begins when the persona starts streaming.

const personaConfig = {
  name: "Cara",
  avatarId: "30fa96d0-26c4-4e55-94a0-517025942e18",
  avatarModel: "cara-4",
  voiceId: "6bfbe25a-979d-40f3-a92b-5394170af54b",
  llmId: "a7cf662c-2ace-4de1-a21e-ef0fbf144bb7",
  systemPrompt: "You are Cara, a helpful customer service representative.",
  maxSessionLengthSeconds: 300,
};

If you don’t set maxSessionLengthSeconds, the session continues until manually ended or until it reaches your plan’s conversation limit: 3 minutes on Free, 5 minutes on Starter, 10 minutes on Explorer, and unlimited on Growth and above.

Recommended durations

Use case	Duration	Reason
Trial / demo	2–5 minutes	Gives users a taste without running up usage
Product demo	5–15 minutes	Enough to showcase key features
Customer support	10–30 minutes	Room for complex issues

Tips

Allow enough time for the conversation to conclude naturally — abrupt endings frustrate users.
Consider showing users a countdown timer so the cutoff isn’t a surprise.
Track actual session lengths to find the right limit for your use case.

Last modified on June 26, 2026

Director Notes Video

⌘I

Introduction

Personas

Security & Network

Resources

Session Duration

Duration limit

Recommended durations

Tips

​Duration limit

​Recommended durations

​Tips

Duration limit

Recommended durations

Tips