Photon Datum

Membership

Membership

Names, terms and features are below; prices are published when membership opens.

Membership gives access to Datum Core: member services behind one login. Members manage their services, including access to the AI workspace, in the member portal.

Each feature carries a label: Available soon, In development or Roadmap. A feature is never described as live before it is.

  • Free Available soon

    The account you keep when you have no paid plan, and where a lapsed plan lands. Not sold.

    Intended use. Trying the workspace and keeping a basic account: ask questions, draft text and get a feel for working with AI before choosing a plan.

    • Single sign-on to member servicesAvailable soon
    • A selection of models in the member portalAvailable soon

  • Chat In development

    Chat with a selection of models through the member portal, behind single sign-on. Starts with a 7-day trial.

    Intended use. Everyday work with an AI assistant, such as writing, research, summarising and brainstorming, in a private workspace instead of a public service.

    • A selection of modelsAvailable soon
    • Private chat and agent workspace (early access)In development
    • 7 daysPending
    • 30 daysPending
    • 90 daysPending
    • AnnualPending

  • Full Chat In development

    Everything in Chat, plus more models and your personal knowledge.

    Intended use. Regular users who want more models to choose from and an assistant that knows their own notes and documents.

    • Everything in ChatAvailable soon
    • Access to more modelsAvailable soon
    • Your personal knowledge indexRoadmap
    • 7 daysPending
    • 30 daysPending
    • 90 daysPending
    • AnnualPending

  • Developer In development

    For people building with AI agents. Includes Full Chat, and Synod for Visual Studio Code.

    Intended use. Developers who want an AI assistant in their editor and in the workspace, working with their code, git history and project tracker.

    • Everything in Full ChatAvailable soon
    • Synod for Visual Studio Code: reach Datum Core agents and resources from your editorIn development
    • Personal and shared knowledge indexRoadmap
    • Distributed collaborative AI compute networkRoadmap
    • 7 daysPending
    • 30 daysPending
    • 90 daysPending
    • AnnualPending

  • Developer Team Roadmap

    Developer for a group of people under one owning account, with a shared team knowledge index.

    Intended use. A small group of developers sharing one account, with a team knowledge index and AI help across the team's work.

    • Everything in Developer, for each seat
    • Seats under one owning account
    • Personal, shared and team knowledge index

  • Consultant Roadmap

    For consultants and analysts. Tools for document and spreadsheet work in the AI workspace, with no need for Visual Studio Code.

    Intended use. Consultants and analysts who produce documents and spreadsheets for clients and want AI help to read, convert, analyse and draft them.

    • Document and spreadsheet tools for consulting work
    • Works in the member portal and the AI workspace

  • Business Roadmap

    Developer Team for an organisation, with custom services quoted for your needs.

    Intended use. An organisation that wants Developer Team for its staff, plus custom services scoped with us for its own needs.

    • Everything in Developer Team
    • Custom services, quoted per engagement

    Contact Photon Datum for more information.

A free 7-day trial, once per account. The account then continues as Free.

Prices appear beside each term when membership opens. To hear when it does, write to us at .

Learn more: Synod for Visual Studio Code · Getting started with Synod for Visual Studio Code · AI agent workspace.

The open-source software and models behind these services, and their licenses: Open-source licenses.

Existing members: log in.