# Worldku

> Worldku turns your conversations with AI into one memory you own, for Worldku apps and the AI tools you connect. View, export or delete it anytime.

Worldku is a personal memory service: one AI whose memory you can view, edit, export, and delete, shared across the Worldku family of apps. It does not connect to or change the memory of third-party assistants such as ChatGPT, Claude, or Gemini.

Notes for agents:

- Localized versions live under /en, /zh-CN, /th, /id, /ja and /ko; every page declares canonical + hreflang. The blog exists under /en and /zh-CN only, the developer docs under /en only, and each legal document has one English body whose canonical URL is under /en. Links below use /en — swap the locale segment for other languages.
- The homepage and every page listed below return a token-efficient Markdown projection when requested with the header "Accept: text/markdown" (response carries Vary: Accept and X-Token-Count).
- Content signals (robots.txt): search=yes, ai-input=yes, ai-train=no — these govern third-party use of Worldku's own published web pages, not the handling of user data.
- Blog RSS feed: https://www.worldku.com/en/blog/feed.xml (zh-CN: https://www.worldku.com/zh-CN/blog/feed.xml)

## Product

- [What is Worldku](https://www.worldku.com/en/what-is-worldku): what the service does, the memory model, and FAQ
- [Pricing](https://www.worldku.com/en/pricing): Free $0, Pro $8/month, Max $20/month (annual billing at a discount)
- [Apps](https://www.worldku.com/en/apps): The first-party apps built on Worldku. One account, one AI, one memory — Rainku, Tuneku, Locoku, Fishingku and Gridku.
- [Blog](https://www.worldku.com/en/blog): education articles on AI memory (English and Simplified Chinese)

## Developers

- [Worldku MCP](https://www.worldku.com/en/docs/mcp): connect AI tools (Claude Code, claude.ai, Codex, Gemini CLI) to your Worldku memory over the Model Context Protocol — server URL, access keys, OAuth 2.1, tools reference, limits. Raw Markdown: https://www.worldku.com/docs/mcp.md
- MCP server endpoint: https://mcp.worldku.com/mcp (Streamable HTTP; authentication required — see the docs page)

## Blog

- [Does ChatGPT Remember Past Conversations? (2026)](https://www.worldku.com/en/blog/does-chatgpt-remember-conversations): Yes — saved memories plus chat-history reference, tied to your account. Where to look, what deleting a chat does not clear, and how to turn it off.
- [Why Does AI Forget What You Told It?](https://www.worldku.com/en/blog/why-ai-forgets): AI forgets because it has no memory between messages — it re-reads a limited context window each turn. How tokens, truncation, and memory features work.
- [What Is AI Agent Memory? Definition, Layers, and Controls](https://www.worldku.com/en/blog/what-is-ai-agent-memory): AI agent memory is the information an assistant retains about you between sessions. Its definition, the three-layer model, and the controls to evaluate.
- [How AI Memory Works: Episodic, Semantic, and Profile Memory Explained](https://www.worldku.com/en/blog/how-ai-memory-works): How AI memory works: episodic, semantic, and profile layers, how recall injects context, why extraction errs, and how to keep memory clean.
- [Is Your AI's Memory Private? Training, Review, Retention, and Deletion](https://www.worldku.com/en/blog/is-ai-memory-private): Is your AI memory private? A vendor-verified explainer on training opt-outs, human review, retention, deletion, temporary modes, and GDPR rights.
- [Does Claude Remember Past Conversations?](https://www.worldku.com/en/blog/does-claude-remember-conversations): Yes — Claude saves memory as topics as you chat, scoped per project. Where the setting lives now, how to pause or reset it, and how to export it as text.
- [Does Gemini Remember Conversations Across Chats?](https://www.worldku.com/en/blog/does-gemini-remember-conversations): Yes, when Memory is on. What Gemini keeps across chats, what Instructions for Gemini holds, and how to delete each — checked against Google's docs.
- [If You Delete the Chat, Does the AI Still Remember?](https://www.worldku.com/en/blog/does-deleting-a-chat-delete-ai-memory): Usually yes. Deleting a conversation removes the transcript, not the memory it produced. What survives in ChatGPT, Claude, and Gemini.
- [How to Turn On Saved Info and Personal Context in Gemini](https://www.worldku.com/en/blog/how-to-turn-on-gemini-saved-info): The exact settings path for Gemini Saved Info and Personal Context, what each one keeps, availability limits, and how to remove an entry later.
- [Gemini Saved Info on My Activity: What's on That Page](https://www.worldku.com/en/blog/gemini-my-activity-saved-info-guide): That saved-info URL no longer resolves. What the Gemini activity page controls — deletion, auto-delete, the training toggle — and where Saved Info went.
- [How to Delete What AI Remembers About You: ChatGPT, Claude, and Gemini](https://www.worldku.com/en/blog/how-to-delete-ai-memory): Memory, chat history, and training use are three separate controls. Step-by-step deletion paths for ChatGPT, Claude, and Gemini.
- [What Is RAG? Retrieval-Augmented Generation, Explained](https://www.worldku.com/en/blog/what-is-rag-retrieval-augmented-generation): RAG retrieves relevant facts from an external store and places them in front of the model before it answers. How it works and why memory features rely on it.
- [Does Grok Remember Previous Conversations?](https://www.worldku.com/en/blog/does-grok-remember-conversations): Yes. Grok keeps memories across chats; edit them from the memory summary in Settings. Deleting chats, Private Chat, and X personalization are separate controls.
- [Does DeepSeek Remember Previous Conversations?](https://www.worldku.com/en/blog/does-deepseek-remember-conversations): Not across separate chats, per its own docs: DeepSeek saves your history, but documents no cross-chat memory. How to delete chats and carry context yourself.
- [Does Perplexity Remember Previous Conversations?](https://www.worldku.com/en/blog/does-perplexity-remember-conversations): Yes, when memory is on. Find Settings → Memory, delete saved memories and threads separately, and see what incognito mode and Brain change.
- [Does Character AI Remember Previous Chats?](https://www.worldku.com/en/blog/does-character-ai-remember-conversations): Within a chat, yes, up to a limit; a new chat starts fresh unless you copy Facts (c.ai+). How pins and Story Memory stop a Character forgetting.
- [Does Replika Remember Past Conversations?](https://www.worldku.com/en/blog/does-replika-remember-conversations): Yes. Replika saves memories you can view and edit, but the chat log only reaches back four months. Where Memory lives, what deleting does, what Ultra adds.
- [The AI Memory Glossary: 28 Essential Terms](https://www.worldku.com/en/blog/ai-memory-glossary): Reference definitions for 28 AI memory terms: tokens, context windows, embeddings, RAG, persistent memory, hallucination, memory export, and more.

## Legal

- [Privacy Policy](https://www.worldku.com/en/legal/privacy)
- [Terms of Service](https://www.worldku.com/en/legal/terms)
- [Acceptable Use Policy](https://www.worldku.com/en/legal/acceptable-use)