How do I keep my context when I switch from ChatGPT to Claude?

Each assistant stores its memory inside its own product. There is no shared format and no transfer between vendors - and there is no commercial reason for one vendor to make your context portable to a competitor.

So the work you did explaining your project in one assistant is invisible to the next one, which is why switching feels like starting over rather than continuing.

Capture: the Brrainy browser extension saves your conversations from ChatGPT, Claude, Gemini, Perplexity, Grok and DeepSeek into one memory, automatically, as you work in them.

Retrieval: tools that speak MCP - Cursor, Claude Code, and any other MCP-capable client - read and write that same memory live, through two tools, brain_recall and brain_remember.

One honesty note up front, because it is the thing people assume: browser capture alone does not make an assistant retrieve from Brrainy. Retrieval needs a separately configured, supported client.

There is a free tier, and bring-your-own-key is honoured on every plan including Free, across chat, embeddings, reranking, OCR and speech-to-text. Your key pays your model provider directly.

Built-in memory needs nothing installed. If you use one assistant and intend to keep using it, that is a real advantage and this is probably not for you.

And Brrainy does not replace your assistant's own memory. It keeps a separate memory underneath, so what you said in one tool can be read by your others.