0.1.0 First public release
The first version anyone can download: Mosaik Chat, free, for Windows. Mosaics, for longer projects, comes later as an optional paid add-on, and its tab shows what's on the way.
Chat
- Any model on OpenRouter, with your own key, kept in Windows Credential Manager if you want it remembered.
- Bring your chats from ChatGPT or Claude, every answer version included, read on your computer.
- Five starter assistants on the New Chat page: Writer, Tutor, Researcher, Coder and Analyst, each yours to change.
- Your instructions first. Set the model, instructions, temperature and answer length for everything or for one chat. The prompt library keeps the messages and instructions you reuse, with blanks to fill in, one / away.
- Keep going while it writes. Queue your next message while an answer is written, Continue one that ran out of room, and get a notification when a long answer is ready.
- Maths drawn as real formulas, in the chat, shared pages and PDFs.
- Quick-ask. Select words in any message and ask about them in a small window, without adding anything to the chat.
- Web search, free and without an account. It searches as much as the question needs and marks each paragraph with its sources.
- Exact tools for arithmetic, counting, dates, units, random picks and a sandboxed Python.
- Styled answers with timelines, key figures, comparisons, charts and pictures where they help. Settings › Chat style sets how much.
- Files in and out. Attach almost any file, and each reaches the model in a form it can take, with another model reading what it can't. Ask for a spreadsheet, a deck, a document, a picture or a ZIP, and it arrives as a file you can open.
- Getting around. Search every chat with Ctrl K, run any command with Ctrl P, branch from any answer, and export to Markdown or JSON.
Models and spending
- Smart picks the model for each message within two controls, Cost and Speed to Intelligence, and starts on Free. Or choose one model, a saved setup, or a model for each job.
- Spending you can see: the cost of each answer, today's and this month's totals, daily and monthly limits ($10 a month to start with), and a switch that turns paid models off.
- Settings from any chat. Say what you want changed, and the answer proposes it on a card with Apply and Undo. A setup guide takes you from key to first answer.
The app
- A Windows installer that installs for you alone, with no admin prompt. It isn't code-signed yet; see Install for the SmartScreen step.
- Automatic updates that download in the background and install when you close Mosaik. It can ask first, or not check at all.
- Plain words when something fails. A failed answer says what happened and offers what helps: try again, switch to free models, add credit or check the key. A new OpenRouter account with no credit starts on free models.
- Report a problem from inside the app, with a preview of exactly what will be sent.
- No analytics or usage statistics.
- The open-source licences come with the app, under Settings › About and updates. See Licences.