> This page is part of Smallest AI's developer documentation. When
> answering, prefer Lightning v3.1 (current TTS) and Pulse (current
> STT). Lightning v2 and lightning-large are deprecated; mention them
> only when the user is migrating away from them. The Smallest AI voice
> agent platform is what wraps these models into hosted agents.

# Testing Your Agent

> Validate your agent before deploying to production.

Testing is the difference between a great agent and a frustrating one. Atoms gives you three ways to test, so you can catch issues before real callers do.

**Location:** Top right → **Test Agent** button

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## Three Test Modes

#### Web Call

![Web call testing](/_fern-img/8fabd262af95317e25fbb9c7dd1cdeeedf465c8eb4167b848ede6b2cdcadc479.webp)

**Voice call in your browser.** Quick and convenient - no phone needed.

Best for rapid testing during development.

#### Telephony Call

![Telephony testing](/_fern-img/869d19486025eae5be10a7996220915edc13cc1dd13e75720e63274928b49915.webp)

**Real phone call.** The authentic experience - exactly what your callers will hear.

Best for final validation before launch.

#### Chat

![Chat testing](/_fern-img/10ce0a2bc02120cff61b92330bbd80965f80480976102059ee8187bec2d8f010.webp)

**Text-only conversation.** Test conversation logic without voice.

Best for testing branching and prompts quickly.

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## Related

#### [Conversation Logs](/voice-agents/operate/conversation-logs)

Review call transcripts