The Vapi dashboard provides an easy-to-use interface for creating, managing and deploying voicebots. Users can create new assistants by clicking the "Create new assistant" button on the Assistant screen. The assistant's model and voice are customizable, with options including OpenAI's ChatGPT-3.5-Turbo and -4-Turbo models, as well as custom LLMs. A phone number is required for inbound calls, which can be purchased directly from Vapi or imported from Twilio. The billing system shows usage information in dollars and minutes, with a base fee of $0.05/minute. Users can input their payment method and the provider fees are at cost. The message and prompt fields allow users to set the first message and system prompt for the assistant, which guides its output and influences the relevance, accuracy and creativity of the AI's responses. The prompt is a crucial aspect of creating a voicebot and should be descriptive and specific. Vapi provides guidance on writing effective prompts, including using casual language, keeping responses short and simple, and being non-obvious but engaging.