Side by side
ChatGPT vs NotebookLM (now Gemini Notebook)
A fact-based comparison built only from each tool's verified directory profile — pricing summaries, plan availability, platforms, and stated strengths and limitations. No rankings, no sponsored placement.
| Criterion | ChatGPT | NotebookLM (now Gemini Notebook) |
|---|---|---|
| Category | AI Chatbots & Assistants | AI Research Tools |
| In one sentence | OpenAI's conversational AI assistant for answering questions, drafting text, and working through problems in plain language. | Google's AI research notebook, renamed Gemini Notebook in July 2026, that answers questions and creates summaries grounded in the sources you upload. |
| Problem it solves | Getting quick, well-structured answers, drafts, and explanations without hunting across many sources. | Helps students, researchers and professionals understand and work with their own documents by grounding AI answers in those sources with citations. |
| Free plan | Yes | Yes |
| Developer API | Yes — docs | No |
| Open source | No | No |
| Platforms | Web, iOS, Android, macOS, Windows | Web, Android, iOS |
| Pricing (summary) | Free plan with limits; paid subscriptions add newer models and higher limits. Verify current plans on OpenAI's pricing page. Checked 2026-10-05 | Free to use with a Google account on the Standard tier; Google AI Plus, Pro and Ultra plans raise limits and add features, and enterprise access is offered through Google Cloud or qualifying Workspace plans. Limits are subject to change. Verify current plans on Google's NotebookLM / Gemini Notebook help pages. Checked 2026-10-13 |
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How to choose
Both profiles link to the vendors' official pricing — plan details change often, so verify there before buying. Pick based on the criterion rows above that matter to your workflow, not on rankings: we don't rank tools, because the right choice depends on your needs.