Question 1

What is Overlay?

Accepted Answer

Overlay is an all-in-one personal AI with memory. It captures what you read, write, ask, save, and decide and makes it available to every model you talk to — Claude, Gemini, or GPT-4.

Question 2

How is Overlay different from ChatGPT or Claude?

Accepted Answer

ChatGPT and Claude start each conversation from zero. Overlay starts from you: every webpage, file, note, and previous conversation lives in your Brain and is retrieved automatically when relevant. You can also switch models mid-thread without losing context.

Question 3

Which AI models does Overlay support?

Accepted Answer

Overlay supports Anthropic Claude (Haiku 4.5, Sonnet 4.5, Opus 4.7), Google Gemini (3 Flash, 3 Pro), and OpenAI GPT-4. Pick the right model for each task without losing your Brain context.

Question 4

Is Overlay private?

Accepted Answer

Yes. Raw vendor blobs and full model prompts aren't stored by default — only previews, hashes, and structured output. You can delete any artifact and its chunks, embeddings, claims, links, and traces will go with it.

Question 5

What is an artifact in Overlay?

Accepted Answer

An artifact is any durable piece of memory: a webpage, note, file, PDF, image, code snippet, Claude artifact, task, calendar event, conversation, or synthesis note. Overlay processes every artifact into chunks, embeddings, entities, claims, questions, and graph links so they can be retrieved later.

Question 6

When will the iOS app, CLI, and MCP server be available?

Accepted Answer

The web app and browser extension are live today. The public API is in beta. The MCP server, CLI, and iOS app are coming soon — sign up to be notified when each ships.

Question 7

How much does Overlay cost?

Accepted Answer

All Brain features are free during the public beta — no credit card required. Paid Pro and Unlimited tiers will launch after the beta with extra model access, higher limits, and team features.