{
"title": "Vivaldi CEO Declares War on AI in Browsers: 'Web Browsing Belongs to People, Not Bots'",
"content": "Jon von Tetzchner, the outspoken CEO of Vivaldi Technologies, has drawn a line in the digital sand. His browser, a niche contender with a fiercely loyal following, will not embed generative AI chatbots, page summarizers, or agentic assistants—not now, not until the technology can prove it respects user privacy and publisher traffic. “Web browsing belongs to the people, not the bots,” von Tetzchner declared in a manifesto that reads like a rebuttal to the AI-first strategies of Google Chrome and Microsoft Edge.
The announcement, first reported by The Register, transforms a product policy into a philosophical standoff. Vivaldi, a Chromium-based browser launched in 2016, has always traded on extreme customizability and privacy. It allows users to tweak everything from tab stacking to mouse gestures, and it defaults to ad and tracker blocking. But von Tetzchner’s latest vow goes further: it outright rejects the kind of AI integration that is rapidly becoming standard in the browser market.
What Vivaldi is Prohibiting—and Why
Vivaldi’s policy is explicit. The browser will not include:
- An LLM-powered chatbot embedded in the sidebar or start page.
- Automatic page summarization that generates AI overviews of third-party content.
- AI agents that can act across tabs, fill forms, or navigate on the user’s behalf.
- Any feature that intermediates between the user and the source without transparent provenance.
The AI Arms Race in Browsers
Google Chrome, commanding over 60% of the global market per StatCounter, has woven its Gemini large language model into the fabric of the browsing experience. AI Overviews appear at the top of search results, synthesizing answers from multiple sources. Chrome also offers a sidebar assistant that can summarize pages, answer questions, and help compose text. Google says these features are used by hundreds of millions, positioning them as productivity enhancements.
Microsoft Edge has gone further with Copilot. The sidebar can access content across open tabs, provide comparisons, and—with permission—interact with forms and pages. Microsoft frames it as opt-in and controllable, but critics see a powerful intermediary that stands between the user and the open web.
The Evidence: AI Summaries Reduce Clickthroughs
Vivaldi’s stance is not based solely on principle. A 2025 Pew Research Center study found that when AI-generated summaries appear on search results, users are significantly less likely to click through to source links. Many stop browsing after reading the summary, never visiting the original content. The Financial Times, The Guardian, and other publishers have reported steep declines in referral traffic from search engines that use AI overviews.
These findings align with the “Google Zero” effect: answers replace clicks, and the web becomes a pipeline for AI-generated summaries rather than a connected network of original sources. By refusing to participate, Vivaldi keeps the browser a portal to the real web, not a filter that siphons value away from its inhabitants.
Technical Risks: Hallucinations and Prompt Injection
Von Tetzchner also highlights two acute dangers of current LLMs. Hallucination—where the model confidently generates false information—can mislead users on critical topics. Prompt injection, where malicious web content tricks an assistant into unintended actions, adds another layer of risk. Security researchers have demonstrated these vulnerabilities across platforms. Vivaldi argues that until these issues are robustly addressed, embedding AI directly into the browser is reckless.