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Second Brain

AI knowledge base that auto-organizes content and lets you chat with your documents and media.

4.2(external rating)
#669 in Productivity#305 in Research
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Freemium🪟 Web
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About Second Brain

Second Brain is an AI knowledge base that automatically organizes documents, videos, articles, images, and audio files into a searchable, AI-chattable workspace. It supports YouTube, TikTok, PDFs, podcasts, articles, and code repos. Features include an AI chat powered by Claude, GPT-4, and Grok, a visual board, and auto-organization with no manual tagging required.

Key Features

auto organization
ai chat
multi format support
visual board
knowledge graph

💰 Pricing

Freemium

Plans from $6/month with access to Claude, GPT-4, and Grok models.

Frequently Asked Questions

Is Second Brain free?
Second Brain offers a free plan with limited features. Paid plans unlock additional capabilities. Plans from $6/month with access to Claude, GPT-4, and Grok models.
What is Second Brain used for?
Second Brain is primarily used for Productivity, Research. AI knowledge base that auto-organizes content and lets you chat with your documents and media.
What platforms does Second Brain work on?
Second Brain is available on Web.
What are the best alternatives to Second Brain?
Top alternatives to Second Brain include ChatGPT, Gemini, Claude. These tools offer similar functionality and may suit different budgets or workflows.

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📊 Comparison vs Alternatives

Feature
Second Brain logoSecond Brain
PricingFreemiumFreemiumFreemiumFreemium
Rating⭐ 4.2⭐ 4.8⭐ 4.5⭐ 4.8
Free Tier
Popularity
34%
100%
96%
94%

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Quick Stats

Rating
4.2
ReviewsExternal data
Productivity#669
Research#305
PricingFreemium
Popularity
34%

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Last updated: 2026-03-28·Claim this listing
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