On December 12, 2025, NotebookLM, an AI note taking tool under Google, is about to receive a major update, which will bring many surprises to Ultra members.

Nowadays, AI assisted productivity tools are receiving increasing attention. Does the significant expansion of NotebookLM's Ultra membership permissions mean that high-end users will have a better experience? Compared to the past, this is undoubtedly a huge leap forward, moving AI note taking tools towards a more professional and powerful direction.

Generate a 50 fold increase in limit, ensuring smooth work flow

Compared to the free version, the NotebookLM generation limit for Ultra members has been directly increased by 50 times. Previously, free users often encountered limitations and had to frequently interrupt their work in high-intensity usage scenarios, such as batch generating reports or analyzing documents, which was very frustrating.

But now it's different. Upgraded users can handle massive amounts of data more smoothly, greatly improving work efficiency. Especially for researchers and content creators, they no longer have to worry about insufficient generation quotas. It's like suddenly losing the speed limit while driving, driving smoothly all the way and getting to the destination faster.

By integrating top tier Gemini models, the level of intelligence has skyrocketed

Ultra members can also use the highest level Gemini model for the first time this time. This high-end AI core is not simple, it has more accurate semantic understanding and generation capabilities. When summarizing notes or brainstorming ideas, it can provide deeper insights and personalized outputs.

With the powerful computing power of Gemini, NotebookLM is no longer just a simple tool, but has become an intelligent assistant that can even rival professional grade AI workstations. Imagine having a super intelligent assistant by your side, helping you process various complex information. Isn't the work much easier?

PPT generation optimization, unlocking new scenes in long format

The PPT generation function has also undergone new changes, adding a "long" setting option and supporting the creation of more detailed multi page presentations. This improvement is specifically designed for scenarios that require deep presentation of content.

For example, business proposals or academic lectures used to require hours of manual editing of lengthy PPTs, but now users can generate structured and logically clear PPTs with just one click, saving a lot of time. This is like transitioning from handmade production to machine mass production, greatly improving efficiency.

Watermark removal, professional and beautiful output

Ultra members can now freely remove watermarks from PPTs and infographics. This feature is particularly suitable for business and publishing needs. When there was a watermark in the past, the brand logo may interfere with the content and affect the quality of the final product. Now remove the watermark, and the output content is pure and professional, like putting a beautiful piece of clothing on the work, which is eye-catching.

Upgrade note sources to 600, greatly expand knowledge base

Supports the permission to add up to 600 note sources, allowing Ultra users to integrate more diverse inputs such as PDFs, web clippings, or multimedia files. This upgrade greatly enriches the process of building the knowledge base. Users can easily create cross disciplinary and large-scale note taking systems, whether it's academic research, corporate reports, or personal knowledge management, all of which can be easily handled. It's like having a huge library with everything you need.

In this era of information explosion, the demand for efficient processing of information is increasing. The permission expansion of Google NotebookLM reflects Google's strategic intention in the AI ecosystem layout. It stimulates loyalty among high-end users through a tiered subscription model, while driving the evolution of tools towards enterprise level applications.

The editor believes that this update may further widen the gap between the free and paid versions, and is expected to attract more professional users to switch to the Ultra plan. If you are also a professional or creator, you may want to follow this update, which may bring great help to your work.