As artificial intelligence becomes a core part of our digital lives, browsers are evolving from simple tools for viewing web pages to powerful assistants that help you research, write, plan, and even automate tasks. If you’re looking for a browser that adds AI smarts without costing a dime, here are the best free AI browsers worth trying in 2025.
Why choose an AI browser?
Unlike traditional browsers, AI-enabled browsers integrate large language models (LLMs) or AI assistants directly into the browsing experience. That means you can get page summaries, ask for explanations, auto-generate content, manage tabs with natural language, and — in more advanced cases — let the browser perform tasks on your behalf (like filling forms or automating repetitive workflows). For students, creators, researchers, and anyone who spends hours navigating the web, AI browsers can significantly boost productivity and reduce friction.
4 Recommended Free AI Browsers
Here are top picks for free AI browsers right now:
Opera (with Aria)
https://www.opera.com/features/aria
Opera has integrated its own AI assistant — Aria — into its flagship browser (on desktop and mobile). Aria works via a sidebar chat: you can summarize web pages, ask questions, generate text or images, and even manage tabs with natural-language commands. For instance, you could type “Close tabs about cooking” and Opera will group or close the relevant tabs for you. The AI works across languages and supports tasks like writing help, translations, creative brainstorming — making Opera a versatile, beginner-friendly AI browser.
Brave (with Leo)
https://brave.com/leo/
Brave is known for its privacy-first approach — and its built-in AI assistant Leo continues that tradition. Leo can summarize articles, answer questions about the current webpage, help with content generation (text, translation, coding), and even handle PDFs or documents. Because it’s built into the browser, you don’t need to install extra extensions. For users who want AI help without complicated configuration or data sharing, Brave + Leo offers a simple yet powerful choice.
Perplexity Comet
https://www.perplexity.ai/comet/
One of the newest entries in the AI-browser space, Comet integrates AI deeply into the browsing and research experience. It helps with tasks like summarizing content, extracting key details, automating research workflows, browsing multiple sources, and assisting with writing or planning. Because it treats the browser as an “AI companion” — rather than bolting on a sidebar — Comet can feel more integrated and seamless for heavy research, planning, and multi-step tasks.
Sigma AI Browser
https://www.sigmabrowser.com/
Sigma is built from the ground up around AI. It aims to go beyond simple page chat: in beta, its AI Agent can log into websites, fill forms, click buttons, navigate complex workflows, and automate tasks across services like email, shopping, project management tools and more. If you’re comfortable with early-stage software and want to experiment with agentic automation — especially for repetitive or multi-step workflows — Sigma offers a free, flexible, and powerful option.
How to choose the right one for you
- If you want a stable, polished browser with simple but powerful AI chat and assistance — go for Opera or Brave.
- If your main goal is research, planning, or deep web work (summaries, cross-site reading, content extraction) — Perplexity Comet shines.
- If you’re into automation and want your browser to do tasks for you (form-filling, workflows, multi-step action) — Sigma AI Browser is worth testing.
- If privacy and minimal data sharing matter to you — Brave (with Leo) is probably the safest bet.
In short: there’s no one-size-fits-all. The “best” AI browser depends on what you prioritize — simplicity, privacy, research power, or automation.