Liner
Seoul, Republic of Korea
What it is
Liner combines AI search, academic research, and writing tools for professional workflows. Its search answers cite sources users can follow and check, and users can ask questions about a specific pool of sources. Liner Scholar supports paper discovery, citation following, multi-paper comparison, literature reviews, and research hypotheses. Liner Write can draft from a topic, add citations, edit text with AI, and export documents as PDF or DOCX. The free plan includes unlimited Advanced Search, Image Generation and Deep Research access, and one file upload per day up to 25MB; answers include ads and the plan provides zero agent credits per month. Pro is $14.99 a year (billed $14.99/month, billed annually; monthly price shown: $17.99). Max is $29.99 a year (billed $29.99/month, billed annually; monthly price shown: $35.99). Pro and Max list ChatGPT, Gemini, and Claude model access. Liner is available on Android, iOS, macOS, Windows, web, as an extension, and through an API. The Team plan includes a dedicated workspace with admin controls and excludes team data from AI training.
For and against
For
- Search answers include citations users can check.
- Scholar supports literature reviews and paper comparisons.
- Write exports documents as PDF or DOCX.
- Team data is excluded from AI training.
Against
- Free plan provides zero agent credits monthly.
- Free plan allows one upload daily, up to 25MB.
- Free-plan answers include ads.
- Pro and Max are billed annually at listed rates.
The verdict
Liner brings search, research, and writing functions together, with a free option and several paid plans. Check the upload limits, agent credits, and annual billing terms against your workflow.
Who it suits
Liner may suit researchers who need paper discovery and comparison, or professionals who want cited search and writing tools. Liner Write identifies sales personnel, marketers, small business owners, and consultants as intended users.
Plans and prices
Free
Unlimited Advanced Search · Image Generation and Deep Research · 1 file upload/day up to 25MB · ads
Read 15 Oct 2026 · liner.com
Pro annual
350+ AI models · Unlimited Advanced Search · Image Generation and Deep Research · 20 uploads/day up to 100MB
Read 15 Oct 2026 · liner.com
Pro
350+ AI models · Unlimited Advanced Search · Image Generation and Deep Research · 20 uploads/day up to 100MB
Read 15 Oct 2026 · liner.com
Team
2–20 members · centralized billing · dedicated workspace · admin controls
Read 15 Oct 2026 · liner.com
Max annual
350+ AI models · Unlimited Advanced Search · Image Generation and Deep Research · Unlimited uploads/day up to 200MB
Read 15 Oct 2026 · liner.com
Max
350+ AI models · Unlimited Advanced Search · Image Generation and Deep Research · Unlimited uploads/day up to 200MB
Read 15 Oct 2026 · liner.com
Enterprise
Team features · dedicated manager · onboarding · audit logs
Read 15 Oct 2026 · liner.com
On the record
- Academic search
- Liner Scholar is designed to find and compare papers, recommend citations, and produce literature reviews.liner.com · read 15 Oct 2026
- Actions integrations
- The Actions API lets an agent create tickets, send messages, or update records in each end user's connected applications.liner.com · read 15 Oct 2026
- AI models
- The Pro and Max plans list access to ChatGPT, Gemini, and Claude models.liner.com · read 29 Sep 2026
- API coverage
- The developer portal documents Model, Search, Visualization, Quick Answer Agent, Search Agent, Deep Research Agent, Visual Answer Agent, and Actions APIs.liner.com · read 15 Oct 2026
- API pricing
- The developer pricing page lists Web Search at $1 per 1,000 requests and Agent API calls at $3 per 1,000 requests, with usage-based billing.liner.com · read 15 Oct 2026
- Audience
- Liner Write identifies sales personnel, marketers, small business owners, and consultants as intended users.liner.com · read 29 Sep 2026
- Browser extension
- The Chrome extension can search, summarize, highlight, and bookmark webpages, PDFs, and YouTube videos.chromewebstore.google.com · read 15 Oct 2026
- Cited answers
- Liner presents answers with source links that users can inspect and supports follow-up questions.liner.com · read 15 Oct 2026
- Cited search
- Liner says its AI search answers cite reputable sources that users can follow and check.liner.com · read 29 Sep 2026
- Company facts
- LinkedIn lists Liner as privately held, founded in 2015, headquartered in San Francisco, and employing 51–200 people.linkedin.com · read 15 Oct 2026
- Company legal name
- Crunchbase lists the legal name as Liner Corp. and identifies Jinu Kim and Chanmin Woo as co-founders.crunchbase.com · read 15 Oct 2026
- Compliance
- Liner lists SOC 2 Type I and II, HIPAA, and ISO 27001:2022 among its security and compliance credentials.liner.com · read 29 Sep 2026
- Documentation depth
- The developer portal includes quick starts, endpoint references, request-oriented API sections, rate-limit material, legal pages, and support links.liner.com · read 15 Oct 2026
- File analysis
- Paid plans support document uploads for summaries and question answering, with file-size and daily-upload limits varying by plan.liner.com · read 15 Oct 2026
- File upload limits
- The Free plan allows one upload per day up to 25MB per file, while Pro allows 20 daily uploads up to 100MB and Max allows unlimited daily uploads up to 200MB.liner.com · read 29 Sep 2026
- Funding investors
- Seoul Economic Daily reported that LB Investment led the 50 billion won round, with existing and new Korean financial investors participating.en.sedaily.com · read 15 Oct 2026
- Funding news
- A GlobeNewswire release dated August 25, 2026 reported a $36.1 million Series C and approximately $64.3 million cumulative funding.globenewswire.com · read 15 Oct 2026
- Image generation
- The Free, Pro, and Max plans include access to image-generation features.liner.com · read 15 Oct 2026
