Google upgrades NotebookLM to Gemini 3.5, adds more coding features

Google LLC today updated its NotebookLM service with a set of online research and coding features designed to save time for users.

NotebookLM is part note-taking app, part data analysis tool. Workers can upload a collection of business documents and have the application summarize their contents. Students can use it to collect information for homework projects. NotebookLM also lends itself to certain related tasks such as creating presentations.

Today’s update upgrades the artificial intelligence engine that powers the service to Gemini 3.5, Google’s newest family of large language models. The company debuted the first algorithm in the series last month. Gemini 3.5 Flash is positioned as an entry-level model, yet outperforms Claude Opus 4.7 across several benchmarks. Google says that it can generate output four times faster than competing LLMs.

The search giant compared the new version of NotebookLM to the previous release using a set of sample tasks. According to Google, the new version performed better across 78.2% of the online research and source discovery tasks used in the evaluation. It’s also significantly better at analyzing lengthy documents.