SumizAI vs Skyllbox

What Skyllbox is

What Skyllbox is

Skyllbox is a free, privacy-first local AI assistant — no cloud, with the option to choose your own model to run on your computer. Unlike popular chatbots that require an account and send every message to an external server, Skyllbox lets users chat, analyze data, and search the web while keeping the whole processing pipeline local to the user's device, as long as the chosen model allows it.

Key features

Chatting with the AI assistant works like a classic chatbot, but with the option to run the model locally instead of relying solely on an external provider's cloud. Data analysis lets users upload files and ask questions about their content, getting summaries and conclusions without leaving the app. Web search extends the assistant's knowledge with current information beyond the model's static training data. Personalization through memories lets the assistant remember user preferences and context across sessions, similar to memory features in larger, cloud-based assistants. Model choice gives the user control over the tradeoff between speed, answer quality, and hardware requirements.

Who it's for

Skyllbox appeals to people who value privacy and don't want their AI conversations landing on big tech company servers. Mac and Windows users with enough compute power to run a local language model find a free alternative to paid, cloud-based assistants in Skyllbox. People working with sensitive data — lawyers, doctors, consultants — appreciate being able to analyze documents without sending them off their own computer.

Use cases

In practice, Skyllbox works well for analyzing a private financial document the user doesn't want to upload to a cloud chatbot out of confidentiality concerns. A consultant preparing a report from several client files can ask questions about their content directly in the app, with no risk of data leaking through an external server. Someone living somewhere with weak or expensive internet can use basic chat functionality offline, as long as the model runs locally.

Pricing and business model

That model lets a wide range of users try local AI at no cost while offering an upgrade path for more demanding use cases.

Limitations and what to watch for

The quality of a local model's answers depends directly on the computer's processing power and on which model the user chooses to run — on weaker hardware, answers may be slower or less precise than in large cloud chatbots. Availability limited to Mac and Windows means no Linux or mobile support at the time of writing.

AI notes from local conversations

Skyllbox has no built-in mechanism for exporting a conversation as a ready note, so preserving a valuable answer as an ai notes entry requires manually copying a conversation fragment and pasting it into a separate notebook. The memory feature helps the assistant remember context within the app itself, but it doesn't automatically create portable, searchable files with ai notes ready to use outside Skyllbox.

Three tools in one window

Skyllbox combines features that in other ecosystems are often scattered across separate apps — a chatbot, a file analysis tool, and a web search engine — into one coherent interface. For the user, that means less switching between programs when a task requires both talking to the model and checking current information online.

AI notes as a byproduct of conversation

People using Skyllbox to analyze documents often uncover valuable insights mid-conversation that are worth keeping as ai notes independent of further questions to the model. Because the app doesn't do this itself, building a habit of manually saving such fragments somewhere separate is the only way to keep those ai notes from disappearing along with a closed conversation window.

French origin and regulatory context

Skyllbox was built in France, within the European Union, which matters to some users in the context of data protection rules — a tool designed to run locally by nature aligns better with expectations around minimizing data transfer than cloud competitors hosted outside Europe. That's not the only reason to choose a local tool, but for organizations with strict compliance requirements it can be a meaningful argument.

A learning curve for beginners

Getting a first local model running tends to be less intuitive than logging into a cloud chatbot — you have to pick a model, wait for it to download, and check whether your computer can handle its requirements. Skyllbox tries to simplify that process compared to running models manually from the command line, but it still requires more upfront setup than a typical web app that's ready the moment you open a browser.

Model updates as the field evolves

The local language model landscape moves fast — every few months brings new, more capable variants running on the same hardware as previous generations. Skyllbox, as a layer that selects a model rather than being the model itself, benefits from that progress automatically: users can swap the running model for a newer one without changing the app itself, setting this approach apart from tools hard-wired to one specific model.

What's worth checking before choosing

Before installing, it's worth checking the hardware requirements of the specific local model you plan to run — an older computer may not handle larger models without noticeable slowdown.

Bottom line

Skyllbox is a free, private AI assistant running locally, a good option for people who don't want to send their conversations to the cloud. Anyone who wants valuable fragments of those conversations to automatically become ai notes saved as files should consider a tool built specifically around that workflow.

Comparison with SumizAI

Skyllbox and SumizAI share a concern for privacy but differ in purpose. Skyllbox is a local chatbot for conversation, data analysis, and web search, with context memory within the app. SumizAI focuses on one specific moment in any AI conversation — the point where an answer is worth keeping for longer as a note entry saved in Markdown format in a vault the user owns. Anyone looking for a local replacement for a cloud chatbot will pick Skyllbox; anyone who wants valuable answers from any AI conversation to leave a lasting, searchable trace will find SumizAI a tool built for exactly that purpose.

What SumizAI is

A note-taking application built around a conversation with an AI model. You ask a question, the answer streams back, and the answers worth keeping become Markdown notes — filed into a vault that is a folder on your own disk.

A vault is a directory holding base.md, a generated table of contents up to six levels deep, and a notes/ folder with one .md file per note. Before a note is written it is checked against the ones already there, so the fourth note about the same idea gets merged instead of added. Links between notes are ordinary Markdown links to files that exist.

The model is never ours: you bring your own API key to one of seven providers — Anthropic, OpenAI, Gemini, Groq, OpenRouter, a local Ollama or your own server — and pay that provider directly. A question sends the table of contents plus at most five relevant notes within a 24,000-character budget, and the app shows you which five it used.

Every answer kept this way becomes one of these ai notes, ready to search again months later without hunting back through old chats.

Side by side

Where they differ

• Skyllbox is a place to have the conversation. SumizAI is not a chatbot — the conversation is the input, not the product. What comes out of it is a .md file with a title, a place in base.md and a duplicate check against the notes already in the vault. If you only want to talk to a model, you do not need SumizAI.
• Skyllbox is freemium: there is a free tier and a paid one, and the line between them is the thing to read before committing. SumizAI has one plan at a dollar a month, so there is no feature held back for a higher tier — and an unpaid account still opens and exports every vault it already has.
• AlternativeTo's description of Skyllbox does not mention Markdown, so check what format your notes end up in before you fill it up. SumizAI writes standard .md files to a folder you picked, and an unpaid account can still export all of them.
• AlternativeTo lists no mobile version of Skyllbox. SumizAI runs on macOS, Windows, iOS and Android.
• Both search. SumizAI's search reads the whole note — title, summary, body and the original question and answer — rather than titles alone.
• Skyllbox's description mentions searching the web. SumizAI does not browse: the material a question can draw on is your own vault — the table of contents plus at most five notes — and whatever the model already knows.
• Both are run from the EU: SumizAI's operator is registered in Poland and the servers are in Germany.

Which one to pick