Opera One
by Opera Limited
Opera One is Opera’s flagship desktop web browser, built around modular tab organization and integrated AI. Its Aria assistant supports web-informed chat, page context, image generation, and browser actions.
Why Abandoned
Opera continues to distribute Opera One from its official website and announced Opera One R3 in January 2026, indicating ongoing active development.
🩺 Health Signals
- HTTP Status
- 200
- Response
- —
- SSL
- —
- Confidence
- 99%
- Domain expires
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- Last content change
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- Last tweet
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- API status
- —
📅 Timeline
Opera One announced in early access
Opera introduced Opera One as a redesigned browser with a modular interface and Tab Islands, initially available in early access.
Aria AI introduced
Opera announced Aria, a browser AI service developed with OpenAI technology and connected to Opera’s own Composer architecture for current web information.
Opera One launched
Opera released Opera One as its new flagship browser and made Aria available within the browser.
Opera One R2 released
Opera launched Opera One R2 with split-screen browsing, enhanced multimedia controls, new themes, and additional Aria capabilities.
Opera One R3 announced
Opera announced Opera One R3, adding visual Tab Islands, expanded split-screen layouts, and deeper AI assistance for tab management and browsing tasks.
🔄 Alternatives to Opera One
ChatGPT
🟢ActiveOpenAI's conversational AI assistant that sparked the generative AI revolution.
Microsoft Copilot
🟢ActiveMicrosoft Copilot is a generative AI assistant available on the web, Windows, mobile devices, and Microsoft Edge. It answers questions, drafts and summarizes text, creates images, and can connect with Microsoft services.
Perplexity AI
🟢ActiveAI-powered answer engine that provides cited, real-time answers to complex questions.
You.com
🟢ActiveAI search engine offering summarized answers with source citations and app integrations.
🪦 Other dead AI Browsers tools
OpenAI Operator
🔴Shutdown / DeadOperator was OpenAI’s browser-using research-preview agent for completing web tasks through a visual browser. Its core capabilities were later integrated into ChatGPT agent mode, and the standalone Operator site was sunset.
SigmaOS
🟠Possibly DeadSigmaOS is a macOS-focused browser organized around workspaces and vertical tabs. It later added AI features such as Airis for asking questions, summarizing pages, and assisting with web-based research.
Mighty
🟡Acquired / MergedMighty was a Chromium-based web browser that streamed browser workloads from cloud servers to users’ computers. The company later pivoted to an AI product before its team joined Google in 2023.
❓ Frequently Asked Questions
What is Opera One?
Opera One is Opera’s flagship desktop browser. It combines conventional web browsing with features such as Tab Islands, split-screen views, multimedia controls, and the integrated Aria AI assistant.
Is Opera One free to use?
Yes. Opera distributes Opera One as a free browser. Some connected AI services may have usage limits, account requirements, or feature availability that varies by version and region.
What AI does Opera One use?
Opera One includes Aria, Opera’s browser AI. Opera introduced Aria using its Composer architecture and OpenAI technology; Opera has since added access to multiple AI models and browser-specific capabilities.
What can Aria AI do in Opera One?
Aria can answer questions, use current web information, summarize or discuss page content, generate text and images, and assist with selected browser tasks. Available functions can vary by Opera release.
How is Opera One different from other AI browsers?
Opera One combines AI assistance with browser-native organization features such as Tab Islands and split-screen layouts. Aria is integrated into the browser rather than offered only as a separate search or chat website.