Google Adds Hindi, Marathi and 50+ Languages to NotebookLM’s Audio Summaries

Google has significantly enhanced its AI-powered research and note-taking platform, NotebookLM, by expanding its Audio Overviews feature to support more than 50 languages. This includes widely spoken Indian languages like Hindi, Marathi, Maithili, Konkani, and Urdu, among others.

What Are Audio Overviews in NotebookLM?

Introduced late last year, Audio Overviews are designed to make complex and technical material easier to understand. Instead of traditional text-to-speech, the tool uses two AI voices that hold a conversational, podcast-style discussion based on the content. This interactive audio experience is intended to make dense information feel more natural and digestible.

Gemini AI Makes Multilingual Audio Possible

The update leverages Google's Gemini AI model, which has built-in audio capabilities, enabling natural language generation in multiple languages. Users can now select an "Output Language" within NotebookLM's settings panel. Once chosen, the AI chatbot responses and audio summaries are automatically produced in that language. Users can switch languages anytime based on their preferences.

Ideal for Multilingual Classrooms and Study Groups

This feature holds great potential in diverse educational environments. Google highlights a scenario where a teacher using materials in Portuguese, Spanish, and English can generate a single summarised audio experience tailored to the student’s preferred language. Such use cases make NotebookLM a promising tool for enhancing learning accessibility.

How to Use the Audio Overviews Feature

The updated functionality is available to all users. Here's how to access it:

🔹 Upload Options:

• Import from Google Drive

• Paste direct links

• Enter content via manual text input

🔹 Generate Audio Overview:

• After uploading the content, select the Audio Overview option.

• Choose your desired output language in settings.

Google confirms that it will continue refining the feature based on ongoing user feedback to enhance performance and usability.

Google's latest updates 2025

As of late April 2025, Google has been actively rolling out several updates across its AI models, cloud services, search capabilities, and workspace applications. Here's a summary of the key developments:

Google's AI Advancements:

• Gemini Model Enhancements: Google continues to advance its Gemini family of large language models. Gemini 2.5 Pro is now in public preview, offering improved reasoning and a massive 1 million token context window. Gemini 2.5 Flash, a faster and more efficient model, is also being integrated into various applications.

• Gemini in Workspace: Deep integration of Gemini AI into Google Workspace is bringing features like AI-powered writing assistance, content generation in Docs and Slides, and enhanced collaboration tools.

• AI Overviews in Search: Google is expanding the use of AI Overviews in Search to provide more comprehensive and faster answers to complex queries. This feature saw a significant increase in entertainment, restaurant, and travel-related searches following the March 2025 core update.

• AI Agents and Agentic AI: Google Cloud introduced the Agent Development Kit (ADK) for building and scaling multi-agent systems. Updates to Agentspace are making it easier to discover, create, and deploy AI agents for various enterprise tasks.

Google Cloud Updates:

• Ironwood TPU: Google Cloud announced its next-generation Tensor Processing Unit (TPU), Ironwood, designed for efficient generative AI inference with significantly increased compute and memory capacity.

• AI Hypercomputer Enhancements: The AI Hypercomputer infrastructure has been upgraded to support larger AI clusters, aiming to accelerate training and inference workloads.

• Vertex AI: This unified platform for machine learning and generative AI continues to evolve with new models (including Gemini 2.5 Pro and Flash, Imagen 3 for image generation, Chirp 3 for audio, and Lyria for music), tools, and features to streamline AI development and deployment.

Search Updates:

• March 2025 Core Update: Google completed the rollout of its first core algorithm update of the year in late March. This update aimed to improve the relevance and helpfulness of search results, leading to significant volatility in search rankings and a recalibration of forum content valuation.

• AI Overviews Impact: The March core update saw a notable spike in the appearance of AI Overviews in search results, particularly for queries in the entertainment, restaurant, and travel sectors.

Workspace Updates:

• Gmail: The Gmail mobile app on iOS received a refreshed look aligned with Material Design 3. Gemini integration in the Gmail side panel now allows users to generate and use images within emails on mobile devices.

• Google Calendar: iOS users can now create and modify birthday events directly within the Google Calendar app.

• Google Slides: A new consolidated design sidebar has been introduced to make building visually appealing presentations easier.

• Google Vids: Editing objects and audio tracks in Google Vids has been improved with better timeline controls.

Developer Ecosystem:

• Google I/O 2025: The annual developer conference in May is set to showcase the latest advancements in Google's AI, Android, Web, and Cloud technologies, with a strong focus on Gemini models and tools for developers.

These updates reflect Google's ongoing commitment to innovation across its diverse range of products and services, with a significant emphasis on advancing its AI capabilities and integrating them to enhance user experiences and developer workflows.