Lumo Updates & Release Notes

From raw data to insights

Lumo can now create charts, graphs, and other custom visuals directly in chats, making it easier to understand complex information in a completely private environment. Ask Lumo to analyze a dataset, and it will generate visuals that highlight trends or key findings, so you digest and act on insights faster. Lumo can also decide when an answer is easier to understand with a visual and generate one automatically.

Lumo doesn’t just generate charts. It analyzes the information you provide and presents the results in the format that’s most useful for the question. Depending on the task, that can include charts, key metrics, summaries, comparisons, and callouts that surface the most important findings.

You can then ask follow-up questions, refine the visual, compare different perspectives, or explore another trend without starting over.

Lumo also generates visuals from information beyond user-provided datasets. When answering questions that involve structured information, trends, or comparisons, it can determine when a visual would help explain the answer more effectively. Rather than asking you to interpret the information yourself, Lumo presents it in the format that’s most useful for the question.

Built for real business data

The new data visualization feature is especially valuable for the organizations using Lumo for work. Financial reports, sales pipelines, customer data, board presentations, and internal research often contain sensitive information that teams are reluctant to upload to third-party AI services.

Because of Lumo’s unique encryption, you can now generate custom visuals while keeping that information private.

Whether you’re working with confidential business data or internal documents, Lumo can help you:

• Review financial performance by turning revenue, budgets, and forecasts into charts that highlight trends and key changes.
• Analyze sales pipelines to compare your internal data without exposing customer information.
• Summarize operational metrics with visual dashboards that make KPIs and performance easier to understand.
• Explore internal reports by turning lengthy documents into visual summaries that surface important findings.
• Research business questions with data visualizations that help explain market trends, industry data, or public information when a visual provides a clearer answer.

Lumo generates visuals directly in the conversation, so you can continue asking questions, refine the analysis, and explore different perspectives without moving your information into separate charting or presentation tools.

Private by design

Data visuals are often created from sensitive information, like your personal finances or internal business documents. Lumo for Business is a private business AI assistant that gives you the power of AI while protecting your information.

Unlike many AI services that log your chats, train on your data, and share it with third parties or governments, Lumo is built so your information remains private by default.

• No record of your chats. Lumo runs on no-logs infrastructure, and zero-access encryption ensures only you can access your conversations, uploaded files, or the visuals Lumo generates.
• No AI training on your data. Lumo never trains AI models on your conversations. Your business data stays yours.
• Protected under European law. Built and operated in Switzerland, Lumo is protected by some of the world’s strongest privacy laws, helping shield your data from government surveillance and third-party data requests.
• Open source and independently verified. Like all Proton services, Lumo’s codebase is fully open source, allowing anyone to verify that our apps work exactly as we say they do.
• Built for regulated organizations. Lumo is designed to support GDPR and HIPAA compliance, backed by Proton’s ISO 27001 and SOC 2 certifications, giving security and compliance teams greater confidence when adopting AI.

Get started

Custom visuals are available for everyone. Upload a spreadsheet or document, paste structured data into a conversation, or simply ask a question. When a visual helps explain the answer, Lumo can generate one automatically as part of its response.

From raw data to insights

Lumo can now create charts, graphs, and other custom visuals directly in chats, making it easier to understand complex information in a completely private environment. Ask Lumo to analyze a dataset, and it will generate visuals that highlight trends or key findings, so you digest and act on insights faster. Lumo can also decide when an answer is easier to understand with a visual and generate one automatically.

Lumo doesn’t just generate charts. It analyzes the information you provide and presents the results in the format that’s most useful for the question. Depending on the task, that can include charts, key metrics, summaries, comparisons, and callouts that surface the most important findings.

You can then ask follow-up questions, refine the visual, compare different perspectives, or explore another trend without starting over.

Lumo also generates visuals from information beyond user-provided datasets. When answering questions that involve structured information, trends, or comparisons, it can determine when a visual would help explain the answer more effectively. Rather than asking you to interpret the information yourself, Lumo presents it in the format that’s most useful for the question.

Built for real business data

The new data visualization feature is especially valuable for the organizations using Lumo for work. Financial reports, sales pipelines, customer data, board presentations, and internal research often contain sensitive information that teams are reluctant to upload to third-party AI services.

Because of Lumo’s unique encryption, you can now generate custom visuals while keeping that information private.

Whether you’re working with confidential business data or internal documents, Lumo can help you:

• Review financial performance by turning revenue, budgets, and forecasts into charts that highlight trends and key changes.
• Analyze sales pipelines to compare your internal data without exposing customer information.
• Summarize operational metrics with visual dashboards that make KPIs and performance easier to understand.
• Explore internal reports by turning lengthy documents into visual summaries that surface important findings.
• Research business questions with data visualizations that help explain market trends, industry data, or public information when a visual provides a clearer answer.

Lumo generates visuals directly in the conversation, so you can continue asking questions, refine the analysis, and explore different perspectives without moving your information into separate charting or presentation tools.

Private by design

Data visuals are often created from sensitive information, like your personal finances or internal business documents. Lumo for Business is a private business AI assistant that gives you the power of AI while protecting your information.

Unlike many AI services that log your chats, train on your data, and share it with third parties or governments, Lumo is built so your information remains private by default.

• No record of your chats. Lumo runs on no-logs infrastructure, and zero-access encryption ensures only you can access your conversations, uploaded files, or the visuals Lumo generates.
• No AI training on your data. Lumo never trains AI models on your conversations. Your business data stays yours.
• Protected under European law. Built and operated in Switzerland, Lumo is protected by some of the world’s strongest privacy laws, helping shield your data from government surveillance and third-party data requests.
• Open source and independently verified. Like all Proton services, Lumo’s codebase is fully open source, allowing anyone to verify that our apps work exactly as we say they do.
• Built for regulated organizations. Lumo is designed to support GDPR and HIPAA compliance, backed by Proton’s ISO 27001 and SOC 2 certifications, giving security and compliance teams greater confidence when adopting AI.

Get started

Custom visuals are available for everyone. Upload a spreadsheet or document, paste structured data into a conversation, or simply ask a question. When a visual helps explain the answer, Lumo can generate one automatically as part of its response.

Lumo AI assistant (new window)

When we launched Lumo AI assistant (new window) a year ago, our ambition was to create an experience that was private, approachable, and easy to use. We designed Lumo to match these virtues — a trusted and independent mascot that protects your personal conversations.

The product has evolved rapidly since then, and with today’s release of Lumo 2.0, it is now more capable, intelligent, and versatile than ever. Conversations are richer and more informed. Lumo is more capable in the workplace. And you now have entirely new creative possibilities thanks to image generation and analysis.

For our design team, this evolution raised an important question: As the Lumo product grows more sophisticated, should the Lumo design evolve with it?

Lumo’s not a kitten anymore

When we first introduced Lumo, we also introduced the character that would become the face of the product.

At the time, both were new. The product was in its earliest stage, and Lumo was designed to reflect that moment: approachable, playful, and welcoming.

Over the past months, we’ve expanded Lumo’s capabilities, improved its intelligence, and learned from how people interact with it every day. As the product matured, it felt natural for Lumo to mature as well.

Rather than redesigning the character from scratch, we chose to evolve it. The new version builds on the foundations of the original while introducing a stronger presence and a greater sense of confidence. It reflects where Lumo is today: More capable, more sophisticated, and ready for what comes next.

And just like the product itself, this evolution is only the beginning.

Lumo AI

Alongside the evolution of Lumo itself, we also revisited the wordmark, the typography used in the Lumo logo.

As AI products become increasingly common, clarity becomes more important. While members of the Proton community already know what Lumo is, most people encounter the brand for the first time without any context.

We wanted the product’s name to communicate its purpose more directly, which is why we decided to modify the wordmark slightly, from Lumo to Lumo AI. It’s a small change, but one that better reflects the product’s growing role within the Proton ecosystem. This change only applies to the logo and visual identity — the name of our favorite mascot, of course, remains Lumo.

Inspired by intelligence

One of the most exciting challenges during this redesign was defining what an intelligent interface should feel like.

Large language models and AI platforms are fundamentally built around connections. Information moves between contexts, ideas connect with other ideas, and complex relationships emerge from countless interactions happening beneath the surface.

We wanted our visual language to capture that feeling.

The result is a more dynamic environment inspired by interconnected systems. Throughout the product, subtle motion, layered depth, and evolving gradients create a sense of movement that reflects the intelligence operating behind the interface.

Rather than treating Lumo as an isolated product, we wanted to reinforce its connection to the broader Proton ecosystem. The new visual system incorporates colors and gradients inspired by multiple Proton products, creating a stronger sense of continuity while preserving a distinct identity for Lumo itself.

Refining the experience through design

Beyond the evolution of the identity, we took the opportunity to revisit many of the core elements that shape the Lumo experience every day. While some changes are immediately visible, others are intentionally subtle, designed to make the product feel lighter, more intuitive, and more enjoyable to use over time.

A calmer and smarter environment

As Lumo evolved, we revisited how color is used throughout the product.

Purple remains an important part of the brand, but we wanted to apply it with greater intention. By reducing its visual dominance and introducing a more balanced palette, we created an interface that feels calmer, more refined, and easier to use for extended periods of time.

The result is an environment that better highlights what matters most: the conversation, the content, and your work.

Bringing more personality to the product

Lumo is more than an interface. It is also a character that accompanies you while you ask questions, create, and work.

As part of this redesign, we created a new collection of illustrations that bring Lumo into different areas of the product. These illustrations are more expressive, more detailed, and designed to reinforce the personality of the assistant without overwhelming the experience.

Small interactions that reward curiosity

Some of the most enjoyable details in the redesign are the ones users discover on their own.

Throughout the product, Lumo occasionally reacts to interactions through subtle animations and playful responses. A hover state, a click, or a simple moment of exploration may reveal hidden behaviors that bring a little more life to the experience.

These moments are intentionally lightweight, but they help transform the interface from a collection of screens into something that feels more personal and engaging.

A curated gallery designed to inspire

Getting started with image generation can sometimes feel overwhelming. To get your creativity flowing, we built a curated gallery featuring images generated by our own design team using Lumo.

These visuals showcase a variety of styles, ideas, and creative directions, helping you better understand the possibilities of image generation while providing inspiration from the very first interaction.

A more immersive creative workflow

We also considered the image creation tool itself. From generation and editing to style exploration and iteration, every part of the workflow was refined to feel more intuitive and immersive.

The goal was simple: Make it easier for you to move from an idea to a result, while giving you more opportunities to experiment, refine, and explore along the way.

Looking ahead

This visual update marks an important milestone in Lumo’s journey, when private AI goes from a proof of concept to a solution on par with the leading AI products.

Over the past months, we’ve continued to improve the intelligence behind Lumo, expand its capabilities, and explore new ways for people to create, learn, and interact with AI.

But this evolution is far from complete.

As the product improves to enable better, faster, and smarter work, the design will continue to evolve alongside it. Today’s redesign lays the foundation for the experiences, interactions, and ideas still to come.

Bonus

And because great communities deserve great tools, we thought of you too.

We’ve created a dedicated sticker library featuring our Lumo, ready to use across your favorite platforms, including Signal, WhatsApp, Discord, and more.

Everything is available to download here. We hope you’ll enjoy using them as much as we enjoyed creating them, and we can’t wait to see them appear in your conversations.

• Signal Stickers (new window)
• Telegram Stickers (new window)
• WhatsApp Stickers (new window)
• Slack Stickers (new window)
• Discord Stickers (new window)

Last year we launched Lumo, a zero-access encrypted AI assistant that never logs your conversations or trains on your data. Since then, more than 10 million people have started using it, and we’ve shipped major updates, including custom conversation styles, dedicated encrypted project spaces, more powerful models, and more.

Today we’re announcing Lumo 2.0, the most significant change since launch. We’ve rebuilt Lumo on a new architecture with capabilities that bring it to the frontier of what AI can do. As always, it runs on Proton’s fully European infrastructure, protected by Swiss privacy laws and zero-access encryption.

Advanced reasoning models

Lumo 2.0 is our biggest leap in capability yet. On the Artificial Analysis Intelligence Index (new window), an independent benchmark combining 10 evaluations across agents, coding, scientific reasoning, and general knowledge, Lumo 2.0 Lite scores 127% higher than Lumo 1.4, and Lumo 2.0 Max scores 240% higher.

Lumo 2.0 also introduces fast and reasoning modes to make everyday interactions feel faster while giving more demanding tasks additional depth. Fast prioritizes speed and Thinking is optimized for more complex, multi-step reasoning — a capability that didn’t exist in Lumo 1.4.

Lumo 2.0 responds to everyday queries up to 76% faster than Lumo 1.4. More complex tasks requiring deeper thinking now benefit from a visible thinking state, letting you see how Lumo is working through the problem in real time.

Image recognition and generation

Lumo 2.0 is now multimodal, able to process both text and images. Upload an image to analyze, create visuals from a prompt or a rough sketch, or edit existing images, all in the same conversation.

Lumo’s zero-access encryption applies to image processing too. Images you upload and the images Lumo generates are stored so that no one, not even Proton, can access them.

Image generation

Describe what you want and Lumo creates it. Type a prompt, refine it in the same conversation, and iterate until it looks exactly right. From a logo concept to a travel poster, start with words and end with an image.

Image editing

Upload an image and tell Lumo what to change. Swap backgrounds, adjust colors, remove unwanted objects, or completely re-imagine a scene.

Image analysis

Upload a chart, a document, a screenshot, or a photo and ask Lumo anything about it. Lumo identifies what’s in the image, reads the data, and responds with detail.

Sketch to image

Upload a rough sketch and describe what you want it to become. Tell Lumo the style, the mood, the details, and watch it take shape.

Powerful new web search capabilities

Compared to Lumo 1.4, Lumo 2.0 has far stronger web search. When a question calls for current information, Lumo pulls live results from across the web and cites its sources, so you can verify answers and dig deeper. It stays current on recent news and events, draws on live financial data, and can even pull in weather forecasts. The result is more accurate, more complete answers with fewer hallucinations.

Deeper context with memories

Lumo 2.0 combines user-controlled memory and Projects to move beyond one-off questions toward collaboration that builds over time.

Memory lets Lumo learn your preferences, working style, and ongoing context, so every conversation starts smarter than the last. You decide what it retains, what it forgets, and what it never learns in the first place.

The context window is now twice as large, so Lumo holds longer conversations coherently and reasons across longer documents and bigger datasets. For work that spans multiple sessions, Projects go further: Each is a dedicated encrypted workspace that keeps your chats, files, and instructions together.

Every piece of context is protected by zero-access encryption, the same architecture that secures over 100 million Proton Mail and Proton Drive users.

Custom Lumos

Lumo 2.0 also introduces Custom Lumos, purpose-built assistants tailored to specific tasks. Build a writing assistant that always drafts in your tone, or a research assistant that structures answers the way you need them. You define the instructions once, and the Custom Lumo follows them every time, no re-explaining required.

Private AI for businesses

Most AI tools create a new category of risk for businesses. Employee queries become training data. Confidential documents can be compromised. And your data sits on infrastructure subject to US law — with recent events already showing how fast access can vanish for international users.

Lumo for Business is built for organizations that can’t afford those risks. Every conversation is zero-access encrypted, never logged, and never used to train future models. Administrative tools let you manage your team’s access, and your data stays on independent European infrastructure, meaning access to Lumo cannot be subject to US Executive Orders and user data is not subject to American data collection requests.

Intelligence without surveillance

With Lumo 2.0, you no longer have to choose between advanced AI and privacy.

People now share more with AI systems than they ever shared with any other technology, and the dominant providers are normalizing a future where your personal data is the price of participation. Conversations are getting mined for training. Behavior is being used as a signal for profiling. Ads are arriving inside the most popular assistants. And control over all of it is now concentrated in the hands of a few US tech companies (many with government and defense contracts) with increasing commercial pressure to monetize your attention.

We believe AI should empower people, not extract from them. As it becomes infrastructure for work, creativity, and communication, privacy can no longer be optional. Lumo brings Proton’s privacy standards to AI: zero-access encryption, no logs, no data sharing, and no training on your conversations. And because Lumo is fully open source, anyone can inspect the code, verify the encryption, and confirm it works exactly as we say.

Lumo 2.0 is live now

• Free: Sign up (new window) for private AI with core capabilities.
• Lumo Plus: Unlimited chats, Projects, advanced image generation, and priority access to the fastest models.
• Lumo Professional: Premium features for teams, enabling secure collaboration without data leak risks.

We are shaping a future where AI works for you. Share your thoughts on X (new window) and Reddit (new window).

Your private AI assistant should be a natural extension of your workflows — remembering the nuances of your work and helping you move more quickly from idea to execution. Without collecting any of your data, it should work with you and not just for you.

Lumo 1.3 delivers exactly that with Projects: a dedicated, encrypted space where you can bundle chats, files, and requirements for any task and have them remain in sync across every device and session. This gives Lumo the context it needs to chip in on larger projects or recurring subjects, whether you’re working on a big report, ongoing university coursework, or your 2026 planning. Staying private and productive has never been easier.

Create a Project

Introducing Projects, the better way to focus, organize, and create

Work smarter, not harder

Projects are encrypted AI workspaces where you can keep all files and chats for a project in one place, along with specific instructions for the project. Lumo remembers all conversations and files associated with the project so you don’t have to repeat instructions or re-explain things. Lumo can immediately pick up where you left off because it remembers all the context.

You can create a Project for just about anything and set tailored custom instructions. Maybe you manage multiple clients or cases, and want Lumo to know something different about each of them. Lumo will remember the background, preferred tone, and focus areas across every conversation in that Project.

You spend less time re‑explaining and defining, and more time getting meaningful, on‑point results.

Keep your data organized and private

Each Project is its own encrypted environment, giving you a clear home for specific areas or workstreams. You can upload files and resources that are important to that project, helping Lumo provide more relevant and accurate responses when analyzing documents or summing up insights.

Projects are integrated with Proton Drive, making it easy to link relevant folder and files to each space while giving you peace of mind that every file is only accessible to you. Lumo never uses your data to train AI models, and your chat histories are zero-access encrypted.

Get the full Lumo experience

Projects are now available to all Lumo users, with a limit of one Project for users logged in on a free account. If you’re handling multiple workstreams, upgrading to Lumo Plus unlocks unlimited Projects, faster response times, access to our most advanced AI models, unlimited chats, and more.

For businesses, Lumo Professional empowers you and your team with all premium features of our privacy‑first AI assistant, speeding up delivery, facilitating effective business strategy and decision-making, streamlining processes, and simplifying compliance across every workstream.

The next chapter in privacy‑first productivity

Projects mark the next step in Lumo’s evolution as a smart AI assistant that complements day-to-day use without sacrificing privacy. Projects keep your work focused, accessible, and truly yours.

Lumo 1.3 is available starting today for all users, and we’re excited for you to try it. Let us know your experiences and feedback, and stay tuned for future innovations, on X (new window) and Reddit (new window).

AI assistants give businesses an edge, helping teams work smarter and save time. But Big Tech AI services come with risky baggage. They log your organization’s data, can share it with third parties, and can leak it to governments and hackers.

Not Lumo.

Lumo is the only AI that gives you all the advantages and without the privacy risks. Millions of individuals are already using our AI assistant to find answers, draft documents, and get more done. Now we’re bringing that same power to organizations with Lumo for Business.

Lumo for Business is a new plan that enables your whole workforce to be secure, compliant, and productive with powerful AI. Unlike other AI services that require expensive enterprise plans, Lumo is affordable for teams of any size with no minimums.

Boost productivity and stay in control

With Lumo for Business, you get the benefits of AI without giving up control over your business data. It’s perfect for companies that have a strict need for confidentiality, like financial advisers, law firms or tech companies with a lot of Intellectual Property.

Here’s what you can do with Lumo:

Protect your business data

Lumo never keeps a record of your conversations, and your team members’ chat histories are stored with zero-access encryption. That means that a given user’s chats can only be decrypted on that same user’s devices using that person’s password. Since we don’t keep a record of your chats, we also can’t share them with any third parties or leak them.

Everything you say to Lumo, whether it’s your intellectual property or information about your clients, is entirely under your control and only accessible to you.

Get more done

You can use Lumo to analyze datasets, summarize meeting notes, draft documents, and plan brainstorms more efficiently. Lumo integrates with Proton Drive, so you can easily add PDFs or Docs to your conversations for more context and better responses.

Stay compliant, and protected by European privacy law

Because Lumo is hosted entirely in Europe, your data benefits from some of the world’s strongest privacy protections. Lumo is also GDPR compliant by design, so we are legally prevented from abusing your data. By contrast, US-based AI services retain logs for their own use and can be compelled to hand over chats to the government. If AI is not based in a privacy-friendly jurisdiction, it is not truly confidential. The primary owner of Lumo is the nonprofit Proton Foundation based in Geneva, Switzerland.

Trust your AI software

Big Tech AI doesn’t show you the code you’re bringing into your business. Once again, Lumo does things differently. Our codebase is open source, so anyone can trust and verify our apps are secure and do exactly what we claim. You can explore our iOS, Android, and web app code. We also only use open-source models, which gives you peace of mind that the training data, methods, and model weights have been vetted by the public.

Getting started is simple

Privacy and security tools should be easy enough for anyone to use. And that includes professional software. To get started, your team can simply download the apps for iPhone or Android. There’s nothing you need to integrate — no IT required.

With Lumo for Business, you get access to our most advanced models, the fastest responses, and unlimited responses. And you’ll be among the first to get new features as we release them.

More than 100 million people already trust Proton Mail, Proton VPN, Proton Pass, and Proton Drive to protect their most sensitive information. Lumo for Business extends that same protection to AI, so your business can embrace new technology without giving up control over your data.

Have questions about using Lumo in your organization? Connect with our team.

Lumo 1.2 is here, and it’s all about tailoring your experience to help you be more productive.

Feedback from our community shows you want a private AI assistant (new window) that’s more customizable to your needs — whether that’s switching to dark mode or asking Lumo to respond with a consistent tone or style.

Following our major knowledge and reasoning improvements with Lumo 1.1, the new Lumo 1.2 delivers on two highly requested features:

• Choose your favorite look for Lumo with dark mode
• Customize your experience by setting your preferred writing style for Lumo

Try Lumo 1.2 (new window)

As always, your chats in Lumo remain completely confidential. Any personalization options you enable retain Lumo’s zero-access encryption, meaning Lumo never keeps any logs and your chat histories are only accessible to you.

Dark mode is here

Dark mode has been one of our community’s most highly anticipated updates for Lumo. Throughout the Proton ecosystem, you can customize the look of all of your apps, and now you can customize Lumo, too, with a light or dark theme.

Customize Lumo’s writing style

Lumo already lets you integrate Proton Drive so that it’s easy to add or remove documents and PDFs from Lumo’s working memory. That’s a powerful way to give Lumo more context for your chats and get better results.

To personalize Lumo further, you can now specify your preferred writing style, tell Lumo your name, and share any other instructions you’d like Lumo to keep top of mind. Getting the answers you need in the way you want them helps you work faster and more seamlessly.

Finding the perfect voice for Lumo makes it easier to find the words you’re looking for, whether you’re writing a casual email or a formal research proposal. The traits you choose for Lumo and the information you want Lumo to remember about you can help you create the ideal AI assistant that always speaks your language.

Crucially, adding personalization doesn’t compromise your privacy: Your chats are still fully confidential and they aren’t used to train Lumo’s models. Even while you’re teaching Lumo how to speak more like you, your conversations are still private and secured with zero-access encryption (new window).

Get more from Lumo with Lumo Plus

These updates are free to all Lumo users, but you can unlock more space for chat knowledge, get faster responses, and unlimited usage with Lumo Plus. Upgrade to Lumo Plus to unlock its full power and invest in the future of privacy-first AI.

Get Lumo Plus

Because Lumo is expensive to operate, we are making Lumo Plus available as a standalone product or an add-on rather than raising prices and adding it by default to existing Unlimited, Family, and Duo plans. At Proton, we give you the freedom to only use AI if you want to.

Building AI that doesn’t exploit you

You don’t need to give your data to Big Tech in order to access powerful AI tools. Lumo was built to give you the power of AI without forcing you to submit yourself to mass surveillance.

With a business model that doesn’t rely on selling your data, Lumo is the privacy-focused alternative that’s changing what you can expect from AI and helping you make the most of it. As always, let us know your thoughts and feedback on X (new window) and Reddit (new window).