Compare the experience before the result.

Google describes AI Overviews as a way to get an AI-generated overview for suitable searches and AI Mode as an experience for exploration, reasoning and comparisons with follow-up questions. Google also says these features can use different models and techniques, so their responses and supporting links can vary. Do not label both simply ‘Google AI’ when your notes need to distinguish them.

ChatGPT can use web search to bring web information and linked sources into an interaction. Record whether that search behavior was actually present in your observation. A product name alone does not establish the exact model, available tools, workspace settings or source behavior of every answer. For another assistant, record its own actual mode and current documented capabilities rather than borrowing assumptions from these products.

Write the real question and constraints before opening the products. If you are comparing advice for a chair in a small shared workspace, include those same relevant needs in each starting task. Avoid giving one experience a budget, room size and access requirement while giving another only the words ‘best chair.’ Those are different inputs.

For a starting-answer comparison, record whether there was prior conversation context and retain the exact text. For a separate follow-up task, save the question sequence so someone can understand how you arrived at the final response. A fresh session can reduce one source of prior context; it does not prove all location, account or product differences have disappeared.

Save the relevant answer and inspect the source references using one clear collection rule. For example, record the references displayed with the saved answer, and keep later search results or follow-up references separate. A source count is hard to interpret if one product includes an expanded list while another record includes only the initially visible link.

Check whether the answer addresses the same need and whether its sources support the important statements. Do not rank reliability by citation count or polished presentation. A product can name the same brand as another while giving different reasons or linking different evidence. That is a reason to read the evidence, not to assume either answer is correct.

A small comparison can reveal a factual error, a missing condition or an unclear page destination worth investigating. It cannot establish the best platform for every business. Prioritize based on the people you serve, observed tasks, available evidence and the work you can evaluate. Product availability and interfaces change; check current official guidance before teaching or implementing specific controls.

Keep ordinary search rankings, saved AI answers and measured website outcomes separate. Current Google documentation provides a Generative AI Search impression report, but those impressions do not make manual cross-product citation sets equivalent. If your question is whether a website explanation is helpful, inspect that explanation and test the reader’s task instead of inventing an industry-wide visibility score.