Choose a plan
Yearly: ten months billed for twelve, paid in one go. The monthly price shown is a rounded equivalent. Extra seats in a workspace keep their 20% discount.
Free · 1 / 4
App and storage hosted in France. Your messages go to the provider of the model you pick, sometimes outside the EU; Moon Blur masks the sensitive data it detects before sending. Security and limits
See how much you save.
Check the subscriptions you pay for today and compare them with Lune or Étoile, one price for every model.
Total €84.58 per month
€64.68 less per month with Étoile
That’s €776.16 a year. Billed yearly, Étoile costs €199, two months free: €815.96 less over twelve months.
No commitment, cancel anytime
Public prices checked on November 13, 2026 on the official pages, for France, monthly with no commitment. Claude Pro is listed at €18 before VAT: the calculation adds 20% VAT, for €21.60. Usage limits differ from one service to another, and through Moon AI the models do not come with every feature specific to each subscription.
Tools that fit the way you work.
More usage, Moon Blur on your own terms, developer API credit every month and more capacity for your agents and isolated computers. Each plan includes everything in the one before. The billing period you pick above applies to these plans too.
Constellation · 1 / 3
Two ways to start together.
A team takes a self-serve workspace and pays per seat. A company, a school or a public body can ask for a managed organization, under contract.
Team workspace
For a team that runs itself: create the workspace, invite your colleagues and pick a plan per seat.
- Free to create from the app, with invitations by email or code
- Owner, admin and member roles, with an admin view for members and invitations
- A team space: shared conversations, notes, agents, skills, prompts and knowledge bases
- Projects shared with the workspace
- One plan for the whole workspace, one seat per member, 20% off from the second seat
- Card payment from the Billing page, monthly or yearly
Organization
Company, school, public body
Moon AI for your whole organization, with an admin console and a contract with Stellarr Studio.
- Admin console: members, invitations, access codes and CSV import
- Domains verified by DNS
- Rules by organization, group and role: models, modes, features and connectors
- Conversation retention you set, from 30 days to 10 years
- Licenses per member, with several plans in one contract, for example for students and teachers
- Invoice paid by bank transfer, or filed on Chorus Pro with a purchase order and commitment number
The price is set in your contract, per seat, based on the number of accounts and the plans you choose. No online purchase: write to us and we will reply with a proposal.
contact@stellarrstudio.com. Monday to Friday, 10 a.m. to 10 p.m., Paris time. Saturday and Sunday, by email only.
What changes from one plan to the next.
Limits and features of all six plans, line by line. Prices follow the billing period you picked above.
| PlansPrices per seat, VAT included, no commitment | Free0€no credit cardStart for free | Lune9.90€VAT incl. per seat per monthChoose Lune | RecommendedÉtoile19.90€VAT incl. per seat per monthChoose Étoile | Constellation49.90€VAT incl. per seat per monthChoose Constellation | Galaxie89.90€VAT incl. per seat per monthChoose Galaxie | Univers249.90€VAT incl. per seat per monthChoose Univers |
|---|---|---|---|---|---|---|
| Usage and storageOne limit shared by messages, images, videos and other actions, shown as a percentage in the app. | ||||||
| Monthly usage limitCompared with Lune. It is not a fixed number of messages: a costlier model or tool uses more of it. | About 2% of Lune | Baseline | ×2.5 | ×6 | ×10 | ×30 |
| Share of the monthly limit per 5-hour session / per weekEach window resets at a set time, shown in the app. | 50% / 100% | 20% / 50% | 20% / 50% | 20% / 50% | 22% / 55% | 25% / 60% |
| File storage | 500 MB | 10 GB | 50 GB | 100 GB | 200 GB | 2 TB |
| Maximum size of an uploaded file | 10 MB | 25 MB | 50 MB | 75 MB | 100 MB | 500 MB |
| Models, creation and dataWhat each plan unlocks in the conversation. | ||||||
Claude, GPT, Gemini, DeepSeek, Mistral, Llama and Moon models       Available versions are listed in the app’s model picker. | Economy and standard models | All models | All models | All models | All models | All models |
| Images, videos and documentsEach creation counts toward the usage limit. | Included | Included | Included | Included | Included | Included |
| Web search with sources | Included | Included | Included | Included | Included | Included |
| Moon BlurReversible masking of the sensitive data it detects before sending to the model, with no guarantee that everything is detected. | Included | Included | Included | Included | Included | Included |
| Moon Blur on your own termsClient names, project names or internal codes, always masked. | Not included | Not included | Not included | 100 terms | 300 terms | 1,000 terms |
| Confidential ChatMessages go to the model without being kept in your history. | Included | Included | Included | Included | Included | Included |
Hosting in France and GDPR The DPA describes the processing and the subprocessors. | Included | Included | Included | Included | Included | Included |
| Email support | Not specified | Included | Included | Included | Included | Included |
| Agents and isolated computerWhat agents can do, and the computer they work on. | ||||||
| Tool turns per answer in Agent mode | 15 | 40 | 40 | 40 | 60 | 100 |
| Isolated computer memory, at most | 1 GB | 2 GB | 2 GB | 2 GB | 4 GB | 4 GB |
| Active computers at the same time, at most | 1 | 3 | 3 | 3 | 5 | 8 |
| Length of a command, at most | 5 min | 5 min | 5 min | 10 min | 10 min | 10 min |
| Kept after last use, at most | 7 days | 30 days | 30 days | 60 days | 90 days | 180 days |
| Custom agents | 3 | 30 | 30 | 30 | 100 | 300 |
| Scheduled tasks per agent, at mostAn agent’s tasks count among your active routines. | Not included | 3 | 10 | 10 | 25 | 50 |
| Automatic memory: analyses per day / memoriesOff by default; each person turns it on in their settings. | 3 / 200 | 30 / 200 | 30 / 200 | 30 / 500 | 60 / 500 | 100 / 1,000 |
| Moon skills and personal skills | 3 personal skills | Included | Included | Included | Included | Included |
| Connectors, routines and APIYour tools, your recurring tasks and programmatic access. | ||||||
Connectors (Gmail, Notion, GitHub, Slack…)    Depending on the permissions you grant your tools. | Not included | 2 | 15 | 15 | 30 | 30 |
| Of which MCP servers, at most | Not included | 2 | 5 | 5 | 15 | 15 |
| Active routines and scheduled tasks | Not included | 3 | 50 | 50 | 150 | 300 |
| Routine runs triggered by webhook, per day | Not included | 200 | 200 | 200 | 1,000 | 5,000 |
| Deep research runs per month | Not included | 5 | 20 | Unlimited | Unlimited | Unlimited |
| Projects | 2 | 5 | 20 | Unlimited | Unlimited | Unlimited |
| Prepaid developer APIA euro wallet you top up in advance, separate from the usage limit. | Included | Included | Included | Included | Included | Included |
| Developer API credit included per monthAdded to the API wallet each month, with no rollover. | Not included | Not included | Not included | €5 | €15 | €50 |
| Account API keys | Not included | Not included | Included | Included | Included | Included |
Moon CLI, the coding agent in your terminal   Moon CLI uses your plan’s usage limit. | Not included | Not included | Included | Included | Included | Included |
| Chat bubble colors | Not included | Included | Included | Included | Included | Included |
| Message tags | Not included | Not included | Included | Included | Included | Included |
| Bubble effects | Not included | Not included | Included | Included | Included | Included |
“Not specified”: this detail is not documented for the Free plan. Prices in the table include VAT, for the first seat.
The usage limit is shared by all your actions and depends on the models and tools you use. Nothing is billed beyond it: a limit you reach resets at the time shown, or a higher plan raises it. Paying yearly changes neither your features nor your limits.
The service’s terms of sale apply.
Moon AI vs. other subscriptions.
Three consumer subscriptions compared with Moon AI, on everyday criteria.
| Criterion | Moon AI | ChatGPT Plus | Claude Pro | Google AI Pro |
|---|---|---|---|---|
| Monthly price, VAT included | from €9.90 | €23 | €21.60 (€18 before VAT) | €21.99 |
| Models included | 100+ models (Claude, GPT, Gemini, DeepSeek, Llama, Mistral, Moon) | OpenAI only (GPT-5, GPT-4o, o1) | Anthropic only (Claude 5, Claude 4.5) | Google only (Gemini 3.5) |
| Hosting | France (Strasbourg, Roubaix) | United States | United States | United States |
| Stated GDPR commitment | Hosting in France + Moon Blur (150+ categories) | To be checked (CLOUD Act) | To be checked (CLOUD Act) | To be checked (CLOUD Act) |
| Conversations used for training | Stated commitment | Manual opt-out | Not by default | Depends on settings |
| Autonomous Agent mode | Included from Lune | Included | Limited | Limited |
| Coding agent in the terminal | Moon CLI from Étoile, with local reversible masking | Codex CLI, without reversible masking | Claude Code, without reversible masking | Gemini CLI, without reversible masking |
| Connectors (Gmail, Notion, GitHub…) | 2 from Lune, 15 from Étoile | Included | Limited | Included |
| Document generation (PDF, Word, Excel) | 9 native formats | Via plugins | Not native | Limited |
| Cancel anytime | No commitment | Yes | Yes | Yes |
Public prices checked on November 6, 2026 on the official pages, for France, monthly with no commitment. Claude Pro is listed at €18 before VAT; the amount shown includes 20% VAT. These prices can change; this comparison is for guidance only. See the detailed comparison.
Your questions about plans.
Models, limits, billing and data: what you need to decide.
Lune or Étoile: which one should I pick?
Lune brings together all the models, image, video and document creation, 2 connectors, 3 routines and 10 GB. Étoile, recommended for heavy daily use, raises usage to 2.5 times Lune’s, with 15 connectors, 50 routines, account API keys, Moon CLI and 50 GB.
Compare Lune and ÉtoileWhat does the Free plan include?
No credit card and no time limit. You get economy and standard models, Moon Blur, Confidential Chat, web search, a 1 GB isolated computer, 3 agents, 2 projects and 500 MB of storage. Its usage limit is about 2% of Lune’s. Connectors, routines, deep research and Moon CLI need a subscription.
Create a free accountHow much does Moon AI cost per month?
Monthly prices for the first seat, VAT included: Lune €9.90, Étoile €19.90, Constellation €49.90, Galaxie €89.90 and Univers €249.90. Extra seats in the same workspace cost 20% less.
See the plansDo prices include VAT?
Yes. Prices shown include French VAT. Each payment comes with an invoice that shows the amount before tax and the VAT, which you can download from the Billing page of the app.
Open the Billing pageHow does per-seat billing work?
A seat is one person in a workspace. The first seat is at the plan price, and each extra seat gets 20% off: with Étoile, €19.90 a month VAT included for the first seat, then €15.92 per extra seat. A member added mid-period is billed pro rata. A member who is removed frees their seat at the next renewal.
Teams and organizationsCan I pay yearly?
Yes. Yearly costs ten months for twelve, so two months are free, paid in one go: Lune €99, Étoile €199, Constellation €499, Galaxie €899 and Univers €2,499 a year for the first seat, VAT included. Extra seats cost ten times their monthly price, for example €159.20 a year with Étoile. The monthly price shown for yearly billing is a rounded equivalent.
Choose the billing periodCan I cancel anytime?
Yes, with no commitment, from the Billing page of the app. Canceling stops the renewal: you keep access until the end of the period you already paid for, month or year. Canceling does not refund that period; the terms of sale apply.
Read the terms of saleCan I change plans?
Yes, up or down, and from monthly to yearly, from the Billing page. Before you confirm, a preview shows the prorated amount and the next renewal date. The new plan applies once the difference is paid.
Manage my subscriptionHow do usage limits work?
Messages, images, videos, searches and actions share your plan’s monthly limit. A share of that limit also applies per 5-hour session and per week, each resetting at a set time. The app shows your usage as a percentage. Nothing is billed beyond your subscription.
See the limitsWhat is the prepaid developer API?
Moon AI’s API is compatible with OpenAI’s and runs on a euro wallet that you top up in advance. It is open to every plan and separate from your subscription’s usage limit. Constellation, Galaxie and Univers add €5, €15 or €50 of API credit every month, with no rollover.
Read the API docsIs Moon CLI included?
Moon CLI, Moon AI’s coding agent in the terminal, is included from Étoile at no extra cost: it uses your plan’s usage limit. It applies Moon Blur on your machine and a guard, Moon Guard, on the commands it runs. The docs list the supported systems.
Read the Moon CLI docsHow do I use Moon AI as a team?
Create a team workspace from the app, then invite your colleagues by email or with a code. The owner picks the plan and pays one seat per member, with 20% off from the second seat. Everyone keeps their own personal space.
Teams and organizationsAre my conversations used to train AI models?
Moon AI states that it does not use conversations for training and that it picks model providers based on their commitments. The service’s privacy policy describes this framework.
Read the privacy policyWhich models can I use?
Paid plans open the whole catalog, including Claude, GPT, Gemini, DeepSeek, Llama, Qwen, Mistral and Moon. The Free plan offers economy and standard models. Check the available versions in the app’s model picker.
Explore the modelsHow does Moon AI compare with other subscriptions?
Moon AI’s published comparison covers models, tools, data protection and price. Competing offers and their prices change: check the comparison before you choose.
Read the comparisonStart for free. Switch plans whenever you like.
The Free plan needs no credit card. A question about a plan, seats, billing or the organization offer? Write to us. Onboarding or integration support from the studio is quoted separately from the subscription.