Liner
FreemiumAI search that prioritizes accuracy with cited sources, using GPT-5, Gemini, and Claude.
By Tanmay Verma, Founder · Last verified 03 Jul 2026
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Added 6d ago
77/100Safe BetIn short
Liner — AI search that prioritizes accuracy with cited sources, using GPT-5, Gemini, and Claude. Best for Students conducting academic research, Professionals needing fact-checked answers, Researchers analyzing papers. Free to start; paid plans from $14.9917/mo.
Is Liner actually worth it?
LiveSee what real users actually say. We scan live discussions, reviews and complaints across the web and hand you an honest verdict — in under a minute.
3 free scans · no card needed · downloadable report
Editorial Verdict
Best for
Students conducting academic researchProfessionals needing fact-checked answersResearchers analyzing papersCurious individuals who value source credibility
Not ideal for
Users needing completely free unlimited accessThose who prefer ad-free experience without payingPeople who dislike per-credit usage systemsUsers who want a single-model AI assistant
Liner stands out for its commitment to accuracy and source transparency, making it a strong choice for research-heavy workflows. The credit system can be a hassle, but the Pro and Max tiers offer good value for power users.
Compare with: Liner vs Claude, Liner vs Overchat AI, Liner vs Aithor
Last verified: July 2026
What independent users actually report about Liner
We ran a structured research pass across product reviews, community discussions, and post-purchase forum threads to surface the patterns vendors won't publish themselves. Below: the recurring strengths, the hidden costs people mention most, and the cohort that consistently regrets adopting this tool.
63 mentions across 4 sources (Reddit, Hacker News, App Store, Lemmy).
11% positive89% critical
Recurring strengths
- +Provides more detailed output than Perplexity, according to users.
- +Multi-model access (GPT-5, Gemini, Claude) in one interface.
- +Good for general coding and daily AI queries.
- +Research-focused with cited sources in answers.
- +Deep Research reports and file upload available.
Recurring frustrations
- −Subscription scams: charges without granting access, no refunds.
- −Academic citations are sometimes invented or inaccurate.
- −Customer support unresponsive to billing complaints.
- −Credit system limits free users heavily (100 credits/month).
- −Free tier cannot upload images, limiting functionality.
Patterns worth knowing
Billing and refund issues dominate negative feedback
Seen on App Store
Academic reliability is questioned
Seen on App Store
Positive user experiences cite better detail than competitors
Seen on App Store
Learning curve
beginnerProductive in ~5 minutes
Hidden costs people mention
- • Deep Research costs 40 credits per use
- • Premium external models cost 30 credits each
- • No refunds for yearly auto-renewals
Viability Score
77/100
Safe BetHow likely is Liner to still be operational in 12 months? Based on 4 signals — momentum (how recently it shipped), wrapper dependency, revenue model, and web presence.
momentum
55
funding runway
80
website health
90
wrapper dependency
100
Last calculated: July 2026
How we score →Key Features
- Advanced Search with cited sources
- Deep Research reports
- Image generation
- File upload (PDF, research papers) for analysis
- Access to GPT-5, Gemini, Claude models
- Liner Scholar for academic research (Literature Review, Hypothesis Evaluator, etc.)
- Liner Write for writing tasks
- Chrome extension for quick access
- Team workspaces with admin controls
- Export answers and reports
About Liner
FreemiumBeginner-friendlyAPI availableWeb · Mobile
Liner is an AI-powered search engine designed to provide accurate, source-backed answers for daily questions, research, and problem-solving. Built for users who value verifiable information, it integrates multiple state-of-the-art models including GPT-5, Gemini, and Claude to return answers rooted in reputable sources. With over 13 million users, Liner offers a suite of tools: Liner Search for general queries, Liner Scholar for academic research, and Liner Write for writing assistance. The service is structured around a credit system. Free users get 100 Agent credits per month, while Pro ($14.99/mo billed annually) and Max ($29.99/mo billed annually) tiers offer 1,000 and 2,500 credits respectively. Credits are consumed per feature use—for example, Deep Research costs 40 credits, premium external models 30 credits. The platform also serves teams and enterprises with dedicated plans starting at $26.99/seat/mo. What sets Liner apart is its emphasis on accuracy: the company claims its Advanced Search outperforms ChatGPT and Perplexity Pro in OpenAI's SimpleQA benchmark. This is achieved by curating sources and leveraging multiple AI models. Users can upload files (PDFs, research papers) for analysis, generate images, and run Deep Research reports. The platform is accessible via web, Chrome extension, and mobile apps for iOS and Android. Liner is ideal for students, researchers, and professionals who need reliable, cited information quickly. However, heavy users may find the credit system limiting, and some advanced features are locked behind paid plans.
Behind the Verdict
Liner is a compelling option if you prioritize verifiable, sourced information over the convenience of a single-model chatbot. The multiple-model approach (GPT-5, Gemini, Claude) reduces bias and improves accuracy, but the credit system introduces friction—especially for heavy users. Students and researchers will appreciate Liner Scholar's specialized tools, while casual users may find the free tier adequate. However, if you rely on unlimited AI interactions, the credit limits could be a dealbreaker. Overall, Liner fills a niche for evidence-driven search that most general-purpose AIs don't emphasize.
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Use Cases
- Search the web with answers backed by cited sources for any question.
- Upload a PDF research paper and receive a concise summary of key points.
- Generate a deep research report on a complex topic for early-stage investigation.
- Use Liner Scholar to conduct a literature review or generate a survey.
- Write or refine documents with AI assistance in Liner Write.
- Ask daily questions and get accurate, model-agnostic answers.
Models Under the Hood
GPT-5GeminiClaude
Limitations
- Credit system can be restrictive for heavy users; advanced features like Deep Research and premium models consume credits quickly.
- Free tier includes ads and limits file uploads.
- Some features (e.g., many Liner Scholar tools) require credits even on paid plans.
12-month cost
Project the real annual outlay, including the implied monthly cost when only an annual tier is published.
Annual total
Free
Over 12 months
Effective monthly
Free
Billed monthly
Vendor list price only. Add-on usage, seat overages, and contract minimums are surfaced under Hidden costs & gotchas.
Resources & Guides
Frequently Asked Questions
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