# Pricing and Limitations

> \[!NOTE]
>
> If you have questions about pricing or want to exceed these limitations, please use the [Contact Sales form](https://www.twilio.com/en-us/help/sales).

## Pricing

### Assistant usage

#### Messaging

* 5,000 messages per account per day
* 100 free messages per month
* After the first 100 messages, you will be charged $0.02 for each message generated by an AI Assistant, in addition to connectivity costs such as SMS and WhatsApp message fees
  * This includes messages generated in [the Simulator](/docs/alpha/ai-assistants/simulator)

#### Voice

* You will be charged $0.10 per minute generated by an AI Assistant, in addition to connectivity costs such as [Programmable Voice telephony fees](https://www.twilio.com/en-us/voice/pricing/us).

You can monitor your pricing and usage in the [Twilio Console](https://console.twilio.com/us1/billing/usage/summary?frameUrl=%2Fconsole%2Fusage%3Fx-target-region%3Dus1\¤tFrameUrl=%2Fconsole%2Fusage%3Fdate%3D2024-09%26__override_layout__%3Dembed%26bifrost%3Dtrue%26x-target-region%3Dus1).

## Limitations

While AI Assistants are in developer preview, some feature and system limitations apply.

### Assistant limits

These limits are per account:

* 5 total Assistants

### Assistant configuration limits

Each Assistant has the following limitations:

* 10 Tools
* 10 Knowledge Sources
* 500 pages maximum for website sources
* 30 characters maximum for names of Tools and Knowledge Sources
* 2,000 characters maximum for descriptions of Tools and Knowledge Sources
* 5,000 characters maximum on personality prompts

If you need to exceed these limitations, please [contact our Sales Team](https://www.twilio.com/en-us/help/sales).