Understand more.
Build together.

Knowledge is a shared resource. With PSI companion, help enrich it, choose the next languages and share your ideas. With your help, PSI will remain free to access and ad-free.

Free to access for everyone
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Collaborative your votes set the priorities
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Independent thanks to your contributions

The first step: participate

PSI companion, your gateway to knowledge.

Installation and user guide →
YouTube Videos and channels
PSI companion Explore · suggest · contribute
PSI Tuits and knowledge

Found an interesting video? Find its tuit, explore its channel on PSI and help make that knowledge accessible to everyone. The extension brings these actions together, directly in your browser.

Understand and explore without losing your place

From YouTube, open the tuit associated with a video and its PSI channel page. From a tuit, open its channel to discover more summaries.

Help discover useful content

Propose an educational channel. At first launch, explicitly choose whether to automatically send public metadata about the YouTube videos you browse; this sharing is independent of donations. After editorial approval, adding a channel selects the 15 newest videos longer than 10 minutes, regardless of age, then up to 75 other most-viewed videos longer than 10 minutes published within the 365 days before processing. New uploads are then followed.

Decide what comes next, together

Vote for a channel or language, contribute to the guestbook and express interest in the shop. These activities are free and independent of donations.

Quick access to tuits Voluntary contributions Free participation
Understand the PSI method →

From PSI 2.0, complete transcripts can be submitted after review, even for a channel not yet followed; they await an editorial decision.

Explore the knowledge classification →

Your voice matters

What should we explore next?

Channels and languages receiving the most votes will be added first, among eligible proposals and when the necessary resources are available.

Vote for a language

First group: the 20 languages selected for PSI titles. French and English are already available on the site.

Alphabetical order follows the displayed language. Votes set priorities.

Other languages: gradually broaden coverage

Choose from the world’s 30 most spoken languages that do not appear in the first list.

Reference: total speakers (first and second language), Ethnologue 2026 table reproduced by Wikipedia. Language varieties are distinguished; Western Punjabi is offered separately from the Punjabi in the initial list.

Vote for a channel

Proposals must have educational value and comply with PSI’s editorial policy.

Voting is free. Donating does not grant extra votes or change a proposal’s position.

Rankings from approved proposals and channels added to PSI.

The 10 most requested channels

The 10 most recently added channels

The guestbook

A few words can help PSI grow.

Encouragement, a suggestion or constructive criticism: your feedback matters. Contribute anonymously, with a nickname or with your name. No donation is needed.

Words from the community

Messages will be moderated to keep this space welcoming. Constructive comments are encouraged.

No published messages yet. Contributions appear only after moderation.

An idea to decide together

Merchandise to support the project?

A support shop may open if the community expresses enough interest. Voting for this idea does not commit you to buying anything.

PSISTAY CURIOUS

The curious minds mug

Stay curious.

The free minds cap

Free to understand.

KNOWLEDGEIS FOR SHARING

The shared knowledge t-shirt

Knowledge is for sharing.

Three visual concepts to discuss and vote on. None of these items is on sale.

01

Express your interest

An initial vote will measure interest in the shop. The threshold will be announced before voting opens.

02

Choose the items

Designs, products and estimated prices will be put to a vote before being made available.

03

Create together

A future design contest could invite the community to imagine new items supporting PSI.

Net proceeds, after manufacturing, selling and delivery costs, will support PSI.

A one-off gift. Or lasting support.

Choose an amount that suits you. Every contribution helps preserve free access to knowledge, without advertising or a required account.

Tangible goals

What will your support make possible?

Your contributions will help keep processing going, open new languages and strengthen our independence. The machines below illustrate capacity levels; the choice will depend on PSI’s needs and measured performance.

01 · CHANNELSInitial processing

Broaden our knowledge

Help process the initial selection from a new educational channel. Votes determine the order of addition.

Around $10
indicative amount per channel

02 · LANGUAGESLaunch

Open a new language

Translate the tuit and interface. The cost varies with the number of tuit when a language is added.

Around $500
varies with the number of tuit to translate

03 · HOSTINGEvery year

Keep PSI available

Keep tuits available, fast to browse and free of advertising throughout the year. The $300 estimate covers hosting 1,000 channels in one language for a year. It grows with the catalogue: 1,000 channels in two languages would be about $600 a year. Producing summaries and purchasing hardware are separate goals below.

Around $300
per 1,000 channels / language / year

04 · CHANNEL HISTORYProcessing

Extend summaries to the complete history of channels

Cover the complete history of older videos with a transcript, for followed channels and content eligible under PSI’s editorial policy. Generalised processing is conditional on an appropriately sized workstation being fully funded and operational. It depends on local processing and scaling up; a donation provides no entitlement to processing a particular channel or video.

An outcome of increased capacity
funded through both processing tiers

05 · AUTONOMY64–128 GB

Process more locally

Increase local video processing capacity, from transcription to publication, with systems offering 64 to 128 GB of memory.

Apple · Mac miniExample workstation with 64 GB memory and a 2 TB SSD.
Apple · Mac StudioExample workstation with 128 GB memory and a 2 TB SSD.
NVIDIA · DGX Spark / GB10Example system with 128 GB memory and up to 4 TB SSD storage.

Examples of solutions for increasing local processing capacity.

$5,000–10,000
estimate depending on configuration

06 · CAPACITYAt least 512 GB

Prepare for growth

Increase computing, storage and publication capacity to reach and exceed one million pages, with systems offering at least 512 GB of memory.

Apple · Mac StudioExample workstation with 512 GB memory and 4 TB SSD storage or more.
NVIDIA · DGX Station / GB300Example system with 748 GB coherent memory.

Examples of solutions for increasing local processing capacity.

$50,000 and above
estimate depending on configuration

Support received and what it makes possible

Donations are totalled in US dollars using the daily reference exchange rate on the payment date, fixed for each donation. When no rate is published, the previous reference is used. Taxes and collection fees are not deducted.

Reference exchange rates used

Progress will be available once the service is connected.

Disclosed reassignments

Work in progress and completed

Estimated amounts in US dollars. Exact amounts are not yet fully defined. Hosting is estimated at around $300 per 1,000 channels, per language and per year.

Understanding local processing

From a new video to publication on PSI.

A local workstation should handle the entire workflow, not only transcription.

  1. 01 Discovery

    Discover new videos by checking channels in rotation.

  2. 02 Transcription

    Retrieve the available text or transcribe the audio.

  3. 03 Analysis

    Extract the main ideas and information.

  4. 04 Critique

    Assess the content and its limits.

  5. 05 Classification

    Organise knowledge by subject.

  6. 06 Translation

    Make summaries available in each language.

  7. 07 Building

    Prepare the site pages.

  8. 08 Indexing

    Update the search tools.

  9. 09 Publication

    Publish completed tuit during scheduled cycles.

64 GB Local processing may be feasible
128 GB Preferred capacity for local processing
512 GB + Minimum target for scaling up

These capacities are sizing targets. Actual throughput will depend on the models, video volume, translations and concurrent processing.

PSI’S WORK CYCLE

How often are tuit processed and published?

Our servers work on an hourly cycle. Discovery of new videos, processing and publication of completed tuit are triggered regularly. Channels are checked in rotation, and processing may continue across several cycles. These are scheduled triggers, not a guaranteed publication time for each video.

Connect knowledge. Bring ideas to life.

In the age of artificial intelligence, let us cultivate our ability to understand, reason by analogy and imagine what connecting knowledge makes possible.

— PostSingularity Institute