Liner: AI Search & Investing

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Liner is an AI assistant that brings source-based AI search, investment news analysis, and document and PDF summaries together into one app. It delivers reliable answers with sources drawn from the web and academic papers, and analyzes how news affect the stocks you follow. With the latest AI models like GPT-5, Gemini, and Claude, move quickly from search to research, and investment insights.

[Source-based AI search]
Ask anything, and Liner searches the web and academic papers to deliver key answers along with their sources. You can verify the evidence behind every answer, making it useful for everyday searches as well as assignments, market research, and professional research.

– Get answers with links to original sources
– Explore and research by comparing multiple sources
– Dig deeper with follow-up questions
– Draw on the latest information and academic materials together

[Investment news and stock impact analysis]
Ask Liner how the news you care about affect your stocks. It breaks down news and market information that potentially impact each stock, so you can explore investment insights faster.

– Discover key news related to the stocks you follow
– See how news may affect your stocks
– Check investment information across multiple sources
– Inform investment decisions with key information at a glance

[The latest AI models in one app]
Use the latest AI models like GPT-5, Gemini, and Claude for whatever you’re working on. Experience the AI features you need for search, research, and document analysis, all in the Liner app.

Liner scored 95.3% on OpenAI’s SimpleQA benchmark and is used by more than 13 million users.

Download Liner now and start with source-based AI search, investment news analysis, and document and PDF summaries.

Liner Pro gives you access to advanced AI models and more Deep Research.

[Document and PDF summaries]
Upload a file, and Liner quickly summarizes long documents and PDFs into key points. Ask questions about your documents and find the information you need, cutting down your reading time.

– Summarize long documents and PDFs
– Ask questions about your uploaded files
– Quickly find key information and main points
– Support your understanding of assignments, work documents, and academic papers

[Ask with photos]
Take a photo of a problem, document, or object — or upload an image — and ask a question. Liner understands what’s in the image and provides the explanations and answers you need.

– Solve and explain problems in photos
– Understand documents and text in images
– Translate and look up information
– Go deeper with follow-up questions

[YouTube video summaries]
Get concise summaries of long YouTube videos. Jump straight to the sections you need with key points and timestamps, and ask follow-up questions based on the video.

– Summarize video content with key takeaways
– Find the sections you need with timestamps
– Ask follow-up questions based on the video

[Terms of Service]
https://liner.com/term