Question: Can you suggest a tool that allows me to test and improve my call handling prompts without extra costs?

For testing and optimizing your call handling prompts without incurring extra costs, ZenCall is a great option. It's an AI-powered call management system that lets you forward missed calls to a specific number. The service offers real-time call notifications with transcriptions, unlimited free prompt testing, and the ability to forward calls to specific people or services. You can keep your existing business number and get a free phone number for seamless continuity, and a 7-day free trial with unlimited calls.

Another great option is Promptitude, which streamlines the use of Generative Pre-trained Transformers (GPT) in your apps and workflows. It lets you manage, test and refine GPT prompts securely, with features for personalized results, reusable prompts, secure sharing, and user feedback. Although it has tiered pricing, the free account option comes with 100,000 OpenAI tokens for testing, so it's a good way to get started and experiment with your prompts.

PromptDrive is another good option for teams looking to adopt and optimize AI tools like ChatGPT. It's got a full prompt management system with chat AI collaboration, organization tools, and a Chrome extension for quick access to prompts. The free Personal plan offers unlimited prompts and public sharing, so it's a good option for individuals or small teams.