source-lm vs PI Labs

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

source-lm compared with PI Labs
Detail	source-lm	PI Labs
What it does	Chrome extension to bulk-add sources to NotebookLM from JSON exports, YouTube, and web pages	Small browser tools that stay out of the way
Stage	Not given	Not given
Founded	Not given	Not given
Based in	ES	Not given
Pricing model	Paid	Freemium
Pricing	Free plan: 5 bulk actions per month, single sources always free. Pro licence: $29 one time, unlimited bulk runs.	Basic: $10/month (400 energy), Standard: $20/month (800 energy), Pro: $95/month (4,400 energy). Top up: $20 for 800 energy.
Key features	Split JSON exports into Markdown files with 400,000-word budget Filter sources, detect duplicates, and batch delete Incremental uploads skip already-added content No account or login required Source-available code published unminified No data written to disk or stored on servers Supports Telegram Desktop and Telegram for macOS exports	Energy-based usage model One Google account, no licence key Cancel any time
What makes it different	No backend or recurring costs: pay once, keep the licence forever Runs entirely in your browser with no account or login needed Smart splitting keeps records whole and avoids duplicates on re-runs Source-available and unminified so you can audit the code yourself Extends NotebookLM's interface with bulk operations and source management tools	Built solo and shipped frequently Small tools that stay out of the way Energy-based pricing scales with usage
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	15 −1 (down) since last check	8 no change since last check
Trust Flow (Majestic)	18	3
Citation Flow (Majestic)	15	16
Referring domains (Majestic)	24	16

5 details filled in for both companies.

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