GEO-Agent-Share-Of-Model: An Open-Source Tool for Tracking Brand Visibility on AI Platforms

This article introduces an open-source prototype tool called GEO-Agent-Share-Of-Model, designed to help brands monitor their exposure on major AI platforms such as ChatGPT, Claude, Gemini, and Perplexity, and track the core metric 'Share of Model' in Generative Engine Optimization (GEO). This tool addresses the shift in brand visibility logic in the AI era—moving from traditional SEO's search rankings to the frequency and prominence of brand mentions in AI responses—providing a scalable monitoring framework for GEO practitioners.

Search Engine Optimization (SEO) used to be the core of digital marketing, but with the rise of generative AI platforms like ChatGPT, the way users access information has fundamentally changed—instead of relying on keyword search link lists, users directly ask AI for comprehensive answers. This has reconstructed the logic of brand visibility: from 'search result position' to 'whether the AI response mentions the brand', giving birth to Generative Engine Optimization (GEO).

GEO-Agent-Share-Of-Model's core features include:

1. Multi-platform coverage: Supports monitoring major AI platforms like ChatGPT, Claude, Gemini, and Perplexity, addressing performance differences caused by variations in training data and alignment strategies across platforms;
2. Automated query and recording: Batch-submit preset category/competition-related queries and record response content from each platform;
3. Brand mention analysis: Identify mentions of target brands in responses and their tone (positive/neutral/negative);
4. Trend tracking and reporting: Monitor regularly to track changes in Share of Model over time, identifying fluctuations and influencing factors.

The technical architecture features of this prototype project:

• API integration strategy: Uniformly handle API differences across different AI platforms; statistical methods are needed to smooth results due to response randomness;
• Prompt engineering: Design neutral prompts that cover real user query distributions and control context to ensure reliable and comparable data;
• Data storage and visualization: Structurally store data such as query time, platform, question, response, and brand mentions, supporting trend analysis and report generation.

Practical Significance: GEO is as important as SEO. The influence of AI recommendations on user decisions is growing rapidly; brands not mentioned by AI almost lose exposure opportunities, making monitoring and optimizing Share of Model an urgent task. Challenges:

1. Platform black box issue: AI platforms do not disclose mechanisms like training data, making it difficult to understand the reasons for mentions;
2. Dynamic randomness: The same question may yield different answers multiple times, requiring statistical robustness;
3. Vague evaluation criteria: The value of brand mentions (position/depth of description) is hard to quantify;
4. Ethical compliance boundaries: Influencing AI responses requires legitimate methods (e.g., high-quality content) to avoid manipulation controversies.

Brands can follow these steps to practice GEO:

1. Define monitoring scope: Determine core category keywords, competitor sets, and 2-3 target AI platforms;
2. Establish baseline: Use the tool to collect current brand mention data as a benchmark;
3. Adjust content strategy: Optimize high-quality authoritative content (easily learned by AI), structured data, and semantic associations between brands and key concepts;
4. Continuous iteration: Regularly review data to adjust strategies and pay attention to technical updates of AI platforms.

GEO-Agent-Share-Of-Model represents an important exploration direction in digital marketing. After AI assistants become the preferred tool for user decisions, a brand's 'AI visibility' will become a key indicator of market influence. Marketing practitioners need to understand GEO principles and monitor Share of Model, and this open-source tool provides a low-cost starting point. In the future, there may be more mature GEO tools and standards, but the core insight is clear: in the AI era, to be mentioned is to exist, and to be recommended is to grow.