Constella is an AI memory canvas that searches your notes, chats and files. Free plan available; Ultra costs $19.99/month. See features and pricing.
Researched and fact-checked by Bartu Cavusoglu · Updated October 26, 2026
Constella is an AI memory and thinking workspace that brings notes, chats, files and messages into one infinite canvas. Its website describes the goal as finding relevant information across all of your data and synthesizing it in one place, powered by what the company calls Deep AI Memory.
The product is aimed at individuals whose ideas are scattered across apps, and at teams who want people and AI agents such as Claude Code and Codex to read the same company memory. It is available as a macOS app, a web app, a Chrome extension and a mobile app, with a free plan that needs no card.
A session starts with a question in plain words. Constella searches the apps a user has connected, drops what does not fit and groups the rest on the board while the user watches. The same ideas can then switch between cards, a table or a chart without leaving the canvas.
Everything the AI adds is an ordinary card that can be circled, underlined or annotated. Users can lasso a few cards and ask about only those, and the answer lands on the board linked to the notes it read, with suggested next questions. Searches work across sources, so a March text, a Notion page and a PDF can appear side by side.
Capture is a major focus. A system-wide overlay opens with Cmd+Shift+O in any app, so a thought can be typed and saved without switching windows. Tags are optional because items are retrieved by meaning rather than exact wording. A Chrome extension clips pages and notes and includes the Stella assistant, which can summarize key points, recall related ideas and search for similar articles and papers.
For agents, Constella offers shared memory so context added in a Claude Code session is available later in Codex or ChatGPT. The pricing page also mentions AI cues during meetings, an MCP and SDK offering, mobile apps and paper alerts. Ultra credits work with every model, including one called LLM Council.
Constella is an AI memory workspace that gathers notes, chats, files and app data onto one infinite canvas. Users can search by meaning, group results and ask questions about selected items. It is available as a macOS app, web app, Chrome extension and mobile app.
Constella has a Free plan at $0 and an Ultra plan at $19.99 per month. Yearly billing is $179.88 a year, equal to $14.99 per month. Extra AI credits are sold in packs of $5 for 2,000 or $20 for 10,000.
Yes. The Free plan is free forever with no card needed and includes 1,000 AI credits a month and 3 canvases. Users can also try one connected app free for 24 hours. Ultra is paid from day one, with a 14-day money-back promise.
The site names Notion, Gmail, Google Drive, Slack, iMessage, Calendar, Apple Notes and Obsidian as sources. It also connects with Claude Code, Codex, ChatGPT and Claude. Ultra keeps up to 3 apps in sync.
According to the pricing page, nothing is deleted. You keep Ultra until the end of the paid period, your notes stay in your account, and you can export everything to Markdown at any time.
Free includes 1,000 credits a month, about 20 questions on the default model, and Ultra includes 10,000. Monthly credits reset on the 1st and do not roll over. Purchased credits never expire and are used after monthly ones.
The homepage shows teams and AI agents such as Claude Code and Codex working on one canvas with shared company memory. The pricing page lists only Free and Ultra plans, so team-specific pricing is not shown.
It suits people whose work is spread across notes, chats, documents and web pages, such as founders, researchers and product teams. It is most useful for those who want AI assistants to share a single memory.