Liner

Liner — Technical Overview

Liner is a freemium AI productivity platform that orchestrates multiple large language model providers — OpenAI (ChatGPT), Google (Gemini), and Anthropic (Claude) — within a single unified interface. It exposes MCP (Model Context Protocol) and API access for developers who need to integrate Liner's capabilities into custom workflows or tooling.

Key technical characteristics:

• Multi-model architecture: Route queries across ChatGPT, Gemini, and Claude from one interface, enabling model comparison or task-specific selection.
• Cited answer generation: Responses are grounded with verifiable citations, supporting one-click citation verification for source auditability.
• File & PDF ingestion: Upload documents for in-context analysis, enabling RAG-style workflows without custom infrastructure.
• Deep Research mode: Generates comprehensive, structured topic reports suitable for automated research pipelines.
• MCP/API access: Programmatic integration available for developers building on top of Liner's search, research, and writing capabilities.
• Platform coverage: Native clients on iOS, Android, Mac, and Windows; browser extensions for Chrome and Edge.
• Security & compliance focus: AI security controls are a stated platform priority, relevant for enterprise and regulated-environment deployments.

Pricing (developer/team context): Free tier available; Pro at $14.99/month (annual) or $17.99/month; Max at $29.99/month (annual) or $35.99/month; Team at $26.99/seat/month; Enterprise at custom pricing. A single plan covers Liner, Liner Scholar, and Liner Write.