NotebookLM Alternatives: 12 Best Similar Tools (2026)

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

*reviews* - Chat with any PDF.

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.

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.

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

DeepSeek's AI assistant. API

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

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

xAI's AI assistant

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

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

Alibaba's AI assistant. Includes QwQ-32B, Qwen2...