Firefox Smart Window Update: Exa Search, Auto Tabs, and AI Model Choices

Mozilla updated Smart Window, its opt-in AI browsing mode in Firefox, on August 18, 2026. This update introduces several enhancements, including Exa-powered web search with cited source links, automatic tab grouping, and visual previews for browsing history. A key differentiator for Firefox Smart Window is its support for multiple AI models, allowing users to select from options like Gemini 3.1 Flash Lite, OpenAI's oss-gpt-120b, and Alibaba's Qwen3-235B, or even local models, all under zero-data-retention contracts. This approach positions Firefox as an "agnostic" alternative to other AI browsers that might favor a single vendor's technology.

Defining AI Browsers and Decision Criteria

AI browsers integrate artificial intelligence directly into the browsing experience to enhance functionality such as search, organization, and content interaction. When evaluating these tools, users typically consider several criteria:

• AI Model Flexibility: The ability to choose between different AI models, offering varied capabilities and privacy assurances.
• Privacy and Data Handling: Policies regarding data retention, training on user interactions, and overall digital sovereignty.
• Core Features: Enhancements like intelligent search, tab management, and browsing history organization.
• Development Status: Whether the feature is stable, in beta, or under active development.

Firefox Smart Window aims to address these criteria by offering a privacy-focused, flexible AI browsing experience.

Key Features of Firefox Smart Window

The latest update to Firefox Smart Window, part of Firefox 154, brings several notable features designed to improve user productivity and information access.

Exa-Powered Web Search

One of the primary additions is an Exa-powered web search. This integration provides chat responses that include cited source links, allowing users to verify information and explore original content directly. This feature aims to offer a more transparent and verifiable AI-assisted search experience.

Automatic Tab Grouping and Visual History

To enhance organization, Smart Window now includes automatic tab grouping with duplicate detection. This helps users manage numerous open tabs more efficiently. Additionally, the update introduces visual previews for browsing history searches, making it easier to locate previously visited pages.

User-Selectable AI Models

A significant aspect of Smart Window is its support for multiple AI models. Users can choose their preferred AI backend from a selection that includes Gemini 3.1 Flash Lite, OpenAI's oss-gpt-120b, and Alibaba's Qwen3-235B. The option to use local models is also available. Mozilla emphasizes that all third-party inference runs under zero-data-retention contracts, ensuring user chats are not stored for training, advertising, or human review.

Comparison of AI Models and Browser Approaches

Firefox Smart Window's approach of offering multiple AI models contrasts with other AI browsers that might integrate a single, proprietary AI solution. This flexibility is a core part of Mozilla's strategy to provide an "agnostic" alternative.

AI Model Options in Smart Window

AI Model	Provider	Key Characteristic
Gemini 3.1 Flash Lite	Google	Available for user selection
oss-gpt-120b	OpenAI	Available for user selection
Qwen3-235B	Alibaba	Available for user selection
Local Models	Various	Available for user selection

Browser Philosophy: Firefox vs. Chrome-like Features

Mozilla positions Firefox Smart Window as an alternative to AI browsers that might lock users into a single vendor's ecosystem. While future updates for Smart Window will introduce Chrome-like surfacing of recent "browsing journeys" and AI-powered autofill for online forms, the fundamental difference lies in the choice of AI models and the strong emphasis on privacy and digital sovereignty.

Privacy and Development Status

Mozilla has made privacy a central tenet of Smart Window. The feature operates with no data retention, and user chats are not used for training, advertising, or human review. This commitment to zero-data-retention contracts for all third-party inference is a key selling point.

Smart Window remains an opt-in beta feature, with no precise date for leaving beta, according to Firefox head Ajit Varma. This indicates ongoing development and refinement based on user feedback.

Conclusion

The August 18, 2026, update to Firefox Smart Window introduces significant AI-powered features, including Exa-powered search, advanced tab management, and a visual browsing history. Its unique selling proposition is the ability for users to choose their preferred AI model from options like Gemini 3.1 Flash Lite, OpenAI's oss-gpt-120b, and Alibaba's Qwen3-235B, all while maintaining strict zero-data-retention policies. For users prioritizing flexibility in AI models and robust privacy controls, Firefox Smart Window presents a compelling option in the evolving landscape of AI-integrated browsers. As an opt-in beta, its future development will likely continue to focus on user-centric enhancements and privacy safeguards.

Sources

• Firefox’s Smart Window promises a better AI browser | The Verge
• Mozilla announces an AI ‘window’ for Firefox | The Verge
• Firefox updates Smart Window, a new in-browser AI assistant that can keep up with you - SiliconANGLE
• Firefox Smart Window adds AI web search, automatic tab groups, and more - 9to5Mac
• Mozilla: New Features Introduced On Firefox Versions 148 And 149 With Focus On Privacy, AI Controls, And Multitasking Tools