Start free. Nothing you save goes away.

30-day trial, no card required. Includes 600 comprehension units, 200 Ask voice minutes and 15 assistant answers a day. After that, stay on Free or choose Pro, Premium, or Scholar.

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Your trial

  • 30-day trial, no card required. Includes 600 comprehension units, 200 Ask voice minutes and 15 assistant answers a day.
  • 200 voice minutes in Ask voice, about 100 minutes of conversation, to talk through what you read.
  • After 30 days the account moves to Free unless you choose a paid plan. Nothing you saved goes away.

Free

Available now
$0

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

  • 100 comprehension units a month. Usage depends on content size, save level, and processing.
Estimate your usage
  • 100 subscribed sources
  • 2 GB storage for uploads and generated audio
  • Keep reading your Library on Free. Read saved sources and write notes without using units.
  • Spaces: 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 supported pages with the Chrome and Firefox extension.
  • Use Omphalis inside ChatGPT in one click, or connect any client through MCP. Read-only.
  • Full-text search. Data export, always.

Pro

Available now
$9/ month

$90 / year · save 17%

For someone who reads or listens most days.

  • 300 comprehension units a month. Usage depends on content size, save level, and processing.
Estimate your usage

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.
  • Ask voice: talk through what you read, out loud, with the sources on screen. 60 voice minutes a month, about 30 minutes of conversation.
  • Use Omphalis inside ChatGPT in one click, or connect any client through MCP. Read, save, and add your own notes.
  • Email things into your Library from an address of your own, up to 10 email sources.
  • Your shortlist on Today: a short, finite set to come back to, with a clear end.
  • Word-by-word read-along and a Key moments recap.
  • More reader typefaces beyond Sans-serif, Serif and Hyperlegible.
  • PDFs made readable, in documents up to 90 MB. Free keeps a PDF but does not read it.
  • Discover in your Library, 5 searches a month.
  • Build a course from one of your long saved documents.

Premium

Available now
$19/ month

$190 / year · save 17%

For a big library, and the connections across it.

  • 600 comprehension units a month. Usage depends on content size, save level, and processing.
Estimate your usage

Everything in Pro, plus:

  • 50 GB storage (uploads + generated audio)
  • Unlimited subscribed sources
  • Ask voice: 200 voice minutes a month, about 100 minutes of conversation.
  • Cross-content connections. How one thing you saved supports, extends, or updates another.
  • HD and Lifelike narration voices in the web app.
  • Discover in your Library, 15 searches a month.
  • Up to 25 email sources.
  • Priority processing

Scholar

Available now
$39/ month

$390 / year · save 17%

For frequent research, long documents and larger imports.

  • 1,200 comprehension units a month. Usage depends on content size, save level, and processing.
Estimate your usage

Everything in Premium, plus:

  • 100 GB storage (uploads + generated audio)
  • Ask voice: 400 voice minutes a month, about 200 minutes of conversation.
  • Discover in your Library, 40 searches a month.
  • Up to 50 email sources.
  • Library ingest API for your own scripts
  • Unlimited assistant answers

Estimate your usage

Usage depends on content size, save level, and processing. Describe a month of what you would save and see about how many units it uses next to a plan's allowance.

Article 1
Save level
More options

Source processing, narration, and Ask model work draw from one monthly pool of units. Cleaning, structure, annotations, transcription, narration, and Ask use units according to the work performed. Reading a source you already saved does not use more units.

Need more in a heavy month? Unit packs start at $10 for 200 units.

Settings, Billing shows where this cycle's units went, what was added and what was returned.

Compare every plan in detail

How do the plans compare?

What each plan includes, side by side.

Feature comparison across the Free, Pro, Premium, and Scholar plans
FeatureFree$0Pro$9 / monthPremium$19 / monthScholar$39 / month
Reading & comprehension
Comprehension units / month1003006001,200
Annotations (define, source, expand)✓✓✓✓
Library save levels: Clean, Structure or Full✓✓✓✓
Key moments recap—✓✓✓
Priority processing——✓✓
Bringing things in
PDFs made readable—✓✓✓
Documents up to 90 MBEPUB, Word✓✓✓
Linked sources (Readwise Reader, Zotero)—✓✓✓
Kindle highlights, from a file or a phone share✓✓✓✓
Email-in sources—102550
Browser extension
Read, structure, annotate, save, listen on any page✓✓✓✓
Saved & structured pages / month40250600600
Word-by-word read-along + Key moments—✓✓✓
Listening
Everyday listening✓✓✓✓
HD + Lifelike voices——✓✓
Word-by-word read-along—✓✓✓
Ask
Ask answers per day550200Unlimited
Ask across all Spaces—✓✓✓
Search by meaning—✓✓✓
Voice minutes / month—60200400
Podcasts
Highlight now and Moments, on a ready transcript✓✓✓✓
Writing
Write beside, with Notebooks in the Library sidebar✓✓✓✓
Connections & memory
Connections—LightFullFull
Currents, where your library meets today's news—✓✓✓
Memory layers1 of 42 of 44 of 44 of 4
See and forget what it remembers✓✓✓✓
Library & storage
Spaces, separate threads of your understanding✓✓✓✓
Subscribed sources1001,000UnlimitedUnlimited
Storage2 GB25 GB50 GB100 GB
Library kept forever, export anytime✓✓✓✓
More reader typefaces—✓✓✓
Your shortlist on Today—✓✓✓
Unit packs ($10 for 200 units, $30 for 600)✓✓✓✓
Discover & courses
Discover searches / month—51540
Read courses✓✓✓✓
Build a course from a document—✓✓✓
In your assistant
Use it inside ChatGPT✓✓✓✓
Connect any client through MCP, read your library✓✓✓✓
Save items and add your own notes—✓✓✓
Library ingest API for your own scripts———✓

Connections: Light links your saved pieces by the people, places and ideas they share, and lets you search by meaning. Full adds how one piece supports, extends, or contradicts another, plus the themes running underneath the library. On Free, Ask answers from the current item or Space by keyword. HD and Lifelike voices are available in the web app; the browser extension narrates with the standard voices. Ask voice is in English, in the web app, and a minute of conversation uses about 2 voice minutes, because your speech and the reply share the allowance. Free keeps a PDF but does not read it. The 30-day trial has Full Connections and 200 voice minutes, but no priority processing, no unit packs, and smaller Ask, Discover, email-in and extension allowances than Premium.

Which plan should I start with?

Start with the 30-day trial. Bring in a few sources you actually want to read, try explanations and Ask, and see how much of the allowance you use. Choose a paid plan when you need its capacity or features.

Pro suits regular reading and search. Premium adds fuller Connections, HD and Lifelike voices and priority processing. Scholar provides more capacity and the Library ingest API. The detailed comparison above shows the limits.

What stays yours at every tier. Reading saved sources and writing your own notes remain available on Free. Export is available on every plan; the privacy policy explains its contents and technical limits. Paid plans add capacity and the features on each plan card.

Every plan works on every device. The web app, the iPhone and Android apps, and the Chrome and Firefox extensions all read from the same library, including on the free plan. Offline downloads are included at every tier. A few features are web only: Ask voice, and HD and Lifelike voices, run in the web app and nowhere else. Podcast Highlight now and Moments work in the web app and mobile web, not in the native apps.

What else should you know before choosing a plan?

Do I need a credit card to start?

No. 30-day trial, no card required. Includes 600 comprehension units, 200 Ask voice minutes and 15 assistant answers a day. You add a card only if you choose a paid plan.

What happens when the 30-day trial ends?

After 30 days the account moves to Free unless you choose a paid plan. Nothing you saved goes away: your whole Library stays readable and exportable.

Is the free plan a trial?

No. The free plan stays free. Free includes 100 comprehension units a month, 100 subscribed sources and 2 GB of storage.

Which plans include Ask voice?

Pro includes 60 voice minutes a month, Premium 200 and Scholar 400. A minute of conversation uses about 2 voice minutes, because your speech and the reply share the allowance. The 30-day trial includes 200. Free does not include voice, and typed Ask works on every plan.

Does the free plan read PDFs?

Free keeps a PDF with its name and page count but does not turn it into a readable page. Every plan above Free, including the 30-day trial, reads PDFs up to 90 MB on current plans. The cost is quoted in units before the work runs and never exceeds the quote.

What are Clean, Structure and Full?

They are how far each save goes. Clean is a readable copy, Structure adds Strata, and Full adds annotations and Connections. Set a default, change it for a single save, and move an item up later with the cost in units shown first. They are on every plan. On Free, Full gives Strata and annotations but Connections does not run, and a very large unattended save may land at Clean and say why.

What do comprehension units pay for?

Comprehension units pay for source processing, narration, and Ask model work, from one monthly pool. How many units a source uses depends on its length, format, save level, and the processing performed. Reading a source you already saved does not draw on the pool again.

What if I need more units in a heavy month?

Omphalis sells unit packs for a heavy month, starting at $10 for 200 units.

How much does paying yearly save?

Annual billing saves 17% on every paid plan. Pro is $90 a year, Premium is $190 a year and Scholar is $390 a year.

Annual saves 17%. The free tier stays free.

Try your first source without a credit card.

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