NotebookLM Alternatives: 12 Best Similar Tools (2026)

ChatPDF

*reviews* - Chat with any PDF.

Perplexity AI

Freemium

Perplexity is a free AI-powered answer engine that provides accurate, trusted, and real-time answers to any question.

Claude

Free + Pro $20/mo+ · Manually verified

Anthropic's AI assistant family — Claude Opus, Sonnet, and Haiku. Strong for writing, coding, analysis, vision, and long-context reasoning.

ChatGPT

Freemium · Manually verified

OpenAI's flagship AI chatbot with the largest mainstream user base. GPT-5.x models for chat, search, image generation, voice, code interpreter, and agent workflows.

Gemini

Freemium · Manually verified

Google's AI assistant family — Gemini 3 Pro for top reasoning, 3.5 Flash for speed. Tight integration with Search, Workspace (Gmail/Docs), and Android.

Adobe Acrobat AI Assistant

AI Assistant add-on $4.99/mo (or $59.88/yr); limited free requests for Acrobat users · Manually verified

Adobe's AI add-on built into Acrobat that summarizes PDFs, answers questions about document content, and points to the source pages.

DeepSeek's AI assistant. API

Lily: Crawdbot level agent with built-in skills, for non-coders

Claude Code-level AI agent and Skills platform requiring zero setup or configuration.

Scholarcy

Freemium

Scholarcy is an AI-powered research assistant designed to help students, researchers, and professionals read, understand, and organize academic...

xAI's AI assistant

豆包

Freemium

Doubao is ByteDance’s next‑generation AI assistant designed to help individuals and teams work, create, and learn more efficiently.

Kimi

Freemium

Kimi is a long‑context AI assistant designed for deep thinking, complex documents, and extended conversations.