Liner
Free tierAccurate AI agents built for smarter work
Free tier available·All audiences·Powered by Multiple providers: OpenAI (ChatGPT), Google (Gemini), Anthropic (Claude)·API available
Key strengths
Cited answers with one-click citation verificationAcademic research with paper finding and literature reviewsAI-powered professional writing and draftingDeep Research for comprehensive topic reportsFile upload and PDF analysisMulti-model support (ChatGPT, Gemini, Claude)AI security and compliance focusMCP/API access for developers
Free tier + paid plans · from $14.99 USD/mo
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Liner — Developer & Integration Documentation
API & MCP Access
Liner provides API and MCP (Model Context Protocol) access, enabling developers to integrate Liner's AI search, research, and writing capabilities into external applications and automated workflows.
Supported Platforms & Integrations
| Platform | Type |
|---|---|
| iOS | Native mobile app |
| Android | Native mobile app |
| Mac | Native desktop app |
| Windows | Native desktop app |
| Chrome | Browser extension |
| Edge | Browser extension |
Model Providers
Liner integrates with multiple upstream LLM providers:
- OpenAI — ChatGPT
- Google — Gemini
- Anthropic — Claude
Core Capabilities (API-relevant)
- Cited answer generation with one-click citation verification
- File upload & PDF analysis for document-grounded queries
- Deep Research for structured, comprehensive topic reports
- Academic paper discovery and literature review generation
- AI-powered drafting and writing via Liner Write
Pricing Tiers
| Plan | Price |
|---|---|
| Free | $0 |
| Pro | $14.99/mo (annual) · $17.99/mo (monthly) |
| Max | $29.99/mo (annual) · $35.99/mo (monthly) |
| Team | $26.99/seat/month |
| Enterprise | Custom pricing |
One plan applies across Liner, Liner Scholar, and Liner Write.
Security
Liner maintains an AI security and compliance focus, making it relevant for enterprise and regulated-environment deployments.