Business Goblin

Business Goblin is a fun side project created by a developer to show how artificial intelligence can handle email tasks. It features a character named the Business Goblin that uses AI to reply to emails on behalf of users. This project is designed to demonstrate that smaller, cheaper AI models can sometimes work better than very large and expensive ones for specific jobs. The main goal is to prove that smart tuning and simple prompting techniques can make powerful AI accessible and cost-effective.

Benefits

The primary advantage of Business Goblin is its ability to save time by automatically handling email responses. Instead of writing every reply manually, users can let the AI draft answers based on their style and needs. The project highlights a key benefit of cost efficiency. By using a smaller AI model called Haiku 4.5, the system avoids the high costs associated with larger models like Opus 4.7. This approach shows that developers can achieve good results without spending a fortune on computing power. The project also demonstrates practical skills in building AI tools, such as using few-shot prompting to guide the AI and applying rate limiting to keep expenses under control.

Use Cases

This tool is best used by developers who want to learn about integrating large language models into real-world applications. It serves as a practical example for anyone interested in building their own AI email assistant. Small businesses or individuals who need quick email drafts might find the concept useful, even if they do not use the exact tool yet. The project is also valuable for educational purposes, as it breaks down complex technical concepts like model tuning and cost management into a simple demonstration. It works well as a sandbox environment to test AI ideas before building a full-scale product.

Pricing

The developer estimated that running this specific joke project in production would cost about 13 USD per month. This low cost is possible because the system uses a smaller, more affordable AI model instead of a massive enterprise-grade one. The total expense covers the monthly usage of the AI service, the email handling tool, and the deployment infrastructure. This pricing estimate is meant to show that building an AI email bot does not require a huge budget if the right technical choices are made.

Additional Information

The project was built using several specific tools to manage its operations. Purelymail handles the email communication, Dokploy is used for deploying the application, and Tailscale manages the network connections securely. The developer noted that while the project works well for demonstration, there are currently no reliable defenses against prompt injection attacks in this context. This means users should be cautious when sharing sensitive information with the AI. The project also serves as a learning resource for understanding how to leverage smaller models effectively through techniques like using expensive models to tune cheaper ones.