LLMnesia vs ChatHub: AI History Search vs Multi-Model Chat

ChatHub and LLMnesia look similar because both can search AI chat history, but they cover different conversations. ChatHub runs ChatGPT, Claude, Gemini, and 20+ models side-by-side and saves history for chats you run through it. LLMnesia is a free, local-first Chrome extension that automatically indexes your native sessions across ChatGPT, Claude, Gemini and 10+ platforms. The deciding question is where your conversations actually happen.

LLMnesia vs ChatHub at a glance

What ChatHub actually is

ChatHub (200,000+ users, 4.7 stars) is a multi-model interface. You open it and query ChatGPT, Gemini, Claude, Llama, and 20+ other models simultaneously in a side-by-side view. It supports three access methods: your existing logged-in accounts, your own API keys, or a ChatHub subscription. It also offers local chat history with full-text search, but that history only covers conversations you have through ChatHub itself.

The critical distinction

Understand this before comparing the two:

• ChatHub history is the conversations you ran through the ChatHub interface, stored locally within the extension.
• LLMnesia history is the conversations you had natively on chatgpt.com, claude.ai, gemini.google.com, and other sites, indexed automatically in the background as you work.

If you use ChatGPT natively on chatgpt.com, which most people do, those sessions are invisible to ChatHub's history search. ChatHub only knows the prompts you ran through its own window.

What ChatHub does well

• Side-by-side model comparison across 20+ AI services at once.
• Prompt library for managing frequently used prompts.
• Local chat history with full-text search for conversations run through ChatHub.
• Web access to enrich responses with live results.
• Custom chatbots via any OpenAI-compatible API.

What LLMnesia does differently

• Indexes native sessions: captures conversations from chatgpt.com, claude.ai, gemini.google.com, and others as you use them normally.
• No interface switch: you work in the platform you prefer; LLMnesia runs in the background.
• Jump-back links: results return you to the original conversation on the original platform.
• Local-first: your index stays on your device.

A concrete example

You compare three models in ChatHub to pick the best summary, then keep working natively in ChatGPT, refining the chosen draft over several follow-up chats. Two weeks later you want that refined draft. ChatHub only saved the original comparison; the native follow-ups are outside it. LLMnesia indexed every native session, so a search for executive summary v3 brings the latest version back with a jump-back link. Searching across tools at once is the focus of how to search multiple AI chatbots at once.

Can you use both together?

Yes, and they pair naturally. Use ChatHub when you want several models' answers side by side, and let LLMnesia index everything you do afterward natively, so your full history, including chats that started in ChatHub, stays searchable from one place.

Choosing between them

Use ChatHub when:

• You want to query multiple AI models simultaneously in one view.
• You are benchmarking model quality or comparing responses.
• You are willing to run prompts through ChatHub to use its history.

Use LLMnesia when:

• You work natively in ChatGPT, Claude, Gemini, and want that full history indexed.
• You want retrieval to cover all your sessions, not only ones run through a separate interface.
• Search is the primary need, not real-time model comparison.

Index every native AI session for free. Install LLMnesia.