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Ephemeral AI — when the conversation never becomes a record

October 14, 2026

Ephemeral AI chat means no transcript of the conversation is kept, and whatever the service does keep is small and ends on a fixed clock. That is different from encrypted storage, local history or delete-when-you-remember. On nixm, no transcript is kept. What persists is the signal: the session's intent and a distilled log, not a transcript, plus any images you upload. It all dissolves seven days after creation.

What makes a conversation "ephemeral"?

Two properties together. First, no transcript: the messages pass to the model and back and render on your screen, but the conversation itself is not kept, so there is no transcript to read, leak, produce or train on later. Second, a short, fixed clock on anything that is kept to make the service work. Ephemerality is an architecture, not a policy: the difference between promising to shred documents someday and never keeping the document, with the few notes you do keep burning on a timer. Like any AI chat, messages still pass through the model provider that answers them.

How is that different from "no-logs"?

"No-logs" is a spectrum, and most of it stores something. Proton's Lumo, for instance, describes zero-access encryption — chats are stored, encrypted so only you can read them. Venice says prompts are never stored on its servers — while chat history lives in your browser's local storage. DuckDuckGo's Duck.ai proxies your identity away — while its help pages describe keeping anonymized metadata. Each is a real privacy improvement; each still leaves a stored copy of the conversation somewhere. Ephemeral means that copy is never made.

How to read a "no-log" claim

The phrase came to AI from VPN marketing and brought its ambiguity with it. Four questions sort any claim, ours included:

  • Does a record exist? If it does, encrypted, local or anonymized, everything else is a qualification on a record.
  • Where does it live? Company servers can be compelled, a browser can be seized or synced, and anonymized stores can be re-identified.
  • Who can read it? Zero-access encryption answers "only you". Policy-gated storage answers "us, under rules".
  • For how long? A retention window is also a legal-exposure window: a court froze OpenAI's deletion schedule for months, and only the zero-retention API tier escaped preservation, because nothing was logged to preserve.

nixm's answers: no transcript exists. The signal, a distilled log and the session's intent, sits on nixm's servers for seven days and then dissolves. Your words still travel to a model to be answered, as with any AI.

Encrypted vs never stored

Encryption is the right choice when you want continuity: months of threads, searchable, on every device. Proton's Lumo is the strongest mainstream example, with chats stored under encryption Proton says even Proton cannot open. But the value of a lasting record and its exposure are the same property, and the two designs fail differently:

  • A breach of encrypted storage yields ciphertext, safe as long as the implementation holds. A breach of nixm finds no transcripts, at most a week of distilled logs.
  • A subpoena against encrypted storage starts a real fight over keys and jurisdiction. The OpenAI case showed stored chats compelled at 20-million scale, while tiers that never logged were carved out for having nothing to give.
  • Time: ciphertext outlives leaked keys, changed laws and faster computers. What has dissolved stops being at risk.

A simple test: is this thinking you want to keep, or thinking you want to do? Journals, ongoing projects and reference threads are for keeping, encrypted. Working something out, or asking what you would rather not own, is for doing, ephemerally. Most people need both.

Isn't that just incognito mode?

No — incognito modes hide history from you. ChatGPT's Temporary Chats sit on servers up to 30 days; Google says Gemini's temporary chats persist about 72 hours. Those windows are real enough that a 2025 court order swept temporary and deleted chats into evidence. The difference with an ephemeral design is what is waiting out the window. Temporary modes keep the full chat for a while. nixm keeps no transcript at all, only a distilled log that ends on a fixed date.

Why incognito isn't enough

Browser incognito controls the wrong machine. It stops traces on your device, but an AI conversation lives on the server: ask ChatGPT something in an incognito window while signed in, and it files to your history like any other chat. Privacy in AI has three layers:

  • Identity: is the conversation linked to you? An account is a join key, and AI chat with no account cuts it.
  • Persistence: does a record exist afterwards, encrypted, local or waiting for deletion? Incognito never reaches this layer, and it is where most "private AI" claims stop.
  • Transit: your words travel to a model to be answered. That is true of every AI, nixm included.

Scored on those three: signed-in temporary modes are linked to you, kept briefly and sent to the model. Duck.ai cuts the identity link, keeps anonymized metadata per its own docs, and sends chats on to third-party models. Lumo, signed in, is linked to your Proton account and keeps an encrypted record until you delete it. nixm needs no account and keeps no transcript, only a distilled log that dissolves after seven days, and sends your words to a model like everyone else.

What persists on nixm, then?

A signal, and being precise here is the point. A signal is a distilled context object:

  • your stated intent,
  • a running distilled log of the session (condensed working notes, not a transcript),
  • a colour and theme,
  • any images you upload as references.

It is what lets a link reopen onto a primed context. It is derived from the conversation; it is not the conversation, which is never kept as a transcript. Anyone you share the signal link with works from that same context, and you can mark a signal private in the meantime. Seven days after creation it all dissolves automatically. That gives two layers of ephemerality: no transcript ever, and even the distilled trace ends on a fixed date.

Why would anyone want this?

Because some thinking shouldn't accumulate. The questions you'd never put in a searchable history, the records courts can compel, the drafts that shouldn't outlive their moment. Permanence became AI's default without anyone choosing it; ephemerality is the deliberate opposite.

Experience it directly

Open nixm and seed a signal — no account. Say something, close the tab, and know no transcript of it exists, and that in seven days nothing of it will.

Opening the link of a signal that has dissolved: nixm says nothing was kept, and a new signal starts from scratch. A demo; the dissolved message is nixm's own.

frequently asked

What does ephemeral AI mean?

No transcript of the conversation is kept, and whatever the service does keep is small and ends on a fixed clock. On nixm, that is a distilled log that dissolves seven days after the signal is created.

Is ephemeral the same as encrypted?

No. Encryption protects a stored transcript from being read; ephemerality means no transcript is kept to protect.

Is ephemeral the same as incognito or temporary mode?

No — those hide chats from your history while retaining them briefly on servers (up to 30 days on ChatGPT, ~72 hours on Gemini, per the companies).

What does "no-log AI" actually mean?

Usually one of four things: encrypted storage, storage in your browser, anonymized retention or deletion after a window. A record still exists somewhere. Ask whether a record exists, where, who can read it and for how long.

Which is better for privacy, encrypted or never stored?

They fail differently. Encryption suits history you want to keep: a breach yields ciphertext, but the record persists. Never stored suits thinking you want to do rather than keep: there is no transcript to breach or produce.

Does browser incognito make AI chats private?

No. It stops traces on your device, but the conversation still reaches the server, and if you are signed in it files to your history as normal.

What is a nixm signal?

A distilled context: your intent, a running distilled log of the session, a theme and any uploaded images. It primes the link for you or collaborators. It is derived from the chat, not the chat itself, and it dissolves seven days after creation.

Does anything on nixm last forever?

No. No transcript is kept, and the signal, with its distilled log and images, dissolves seven days after creation. It can be marked private until then.

Can I try nixm without an account?

Yes. Open nixm.ai and seed a signal, with no sign-up and no transcript kept.

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