Start free. Nothing you save goes away.

Enough to read a few things a week and see if it sticks.

• 100 comprehension unitsDefineHow we meter the expensive part: cleaning a source up, laying out its structure, and explaining the hard bits. One unit is roughly one article. A long PDF or a two-hour podcast costs more, because it genuinely costs us more. Reading things you already saved never costs a unit. a month. Around 40 articles, or 6 hours of podcasts.

• 100 subscribed sources
• 2 GB storage for uploads and generated audio
• Library kept forever. Voice notes never metered.
• SpacesDefineSeparate shelves for separate parts of your life, so a work project and a personal interest do not end up in one pile. You switch between them; nothing is shared unless you move it.: keep separate threads of your understanding, and switch between them anytime.
• Memory: Omphalis follows the topics you keep. See every entry, forget any of it.
• Read any course in the catalog.
• Read and save from any page with the Chrome and Firefox extension.
• Use Omphalis inside ChatGPT in one click, or connect any client through MCPDefineAn open standard that lets other apps talk to your library. In practice: use Omphalis from inside ChatGPT, Claude, or your editor, without copying anything across.. Read-only.
• Full-text search. Data export, always.

$90 / year · save 17%

For someone who reads or listens most days.

• 300 comprehension unitsDefineHow we meter the expensive part: cleaning a source up, laying out its structure, and explaining the hard bits. One unit is roughly one article. A long PDF or a two-hour podcast costs more, because it genuinely costs us more. Reading things you already saved never costs a unit. a month. Around 120 articles, 20 hours of podcasts, or a dozen PDFs.

Everything in Free, plus:

• 25 GB storage (uploads + generated audio)
• 1,000 subscribed sources
• Finds the people, places and ideas your saved pieces have in common, and lets you search by meaning rather than exact words.
• Use Omphalis inside ChatGPT in one click, or connect any client through MCPDefineAn open standard that lets other apps talk to your library. In practice: use Omphalis from inside ChatGPT, Claude, or your editor, without copying anything across.. Read, save, and add your own notes.

$190 / year · save 17%

For a big library, and the connections across it.

• 600 comprehension unitsDefineHow we meter the expensive part: cleaning a source up, laying out its structure, and explaining the hard bits. One unit is roughly one article. A long PDF or a two-hour podcast costs more, because it genuinely costs us more. Reading things you already saved never costs a unit. a month. Around 240 articles, 40 hours of podcasts, or 30 PDFs.

Everything in Pro, plus:

• 50 GB storage (uploads + generated audio)
• Unlimited subscribed sources
• Cross-content connectionsExpandLinks Omphalis finds between two things you saved: where one supports another, extends it, or contradicts it. It builds up as your library does, and it is the part that only works because you kept things.. How one thing you saved supports, extends, or updates another.
• Works hardest on the hundred pieces you actually spent time with, not everything you ever saved.
• Priority processing

$390 / year · save 17%

For research volume: hundreds of papers and long PDFs a month.

• 1,200 comprehension unitsDefineHow we meter the expensive part: cleaning a source up, laying out its structure, and explaining the hard bits. One unit is roughly one article. A long PDF or a two-hour podcast costs more, because it genuinely costs us more. Reading things you already saved never costs a unit. a month. Around 480 articles, 80 hours of podcasts, or 60 PDFs.

Everything in Premium, plus:

• 100 GB storage (uploads + generated audio)
• Library ingest API for your own scripts
• Unlimited assistant answers