Best Chrome Extensions to Save and Search AI Conversations (2026)

Why native AI history is not enough

Every major AI platform — ChatGPT, Claude, Gemini — stores your conversation history. So why do so many users still lose answers?

The problem is search quality at volume. Native history is designed for in-product browsing: a list of recent chats, a basic search bar, and titles you may or may not have set. This works well up to a point. Once you have hundreds of sessions across multiple platforms, recovering a specific prompt from three weeks ago takes more time than it should.

The right Chrome extension adds a retrieval layer on top of native history — automatic capture plus full-text search.

What to look for in an AI conversation extension

Before evaluating specific tools, here is the minimum bar for any extension worth installing:

• Automatic capture — it should save without requiring manual exports.
• Full-text search — you need to find answers by keyword, not by conversation title.
• Cross-platform support — if you use more than one AI tool, coverage should match.
• Local-first or clear privacy policy — AI conversations often contain sensitive work. Know where your data goes.

LLMnesia — search-first history for multi-platform users

LLMnesia is built around the retrieval problem. It runs in the background, indexes conversations from ChatGPT, Claude, Gemini, and other supported platforms, and gives you a unified search interface to find any prompt, answer, or code snippet from any prior session.

The key differentiator is that LLMnesia is designed around finding, not just saving. Jump-back links return you directly to the original conversation. The index stays on your device.

Best for: users who switch between AI platforms and regularly need to recover context from earlier sessions.

Chat Memo — simple auto-save for single-platform users

Chat Memo auto-saves conversations as you work. It is a lightweight option that adds a local backup layer without complexity.

The limitation is retrieval depth. Chat Memo is better suited for users who mainly need a backup copy rather than frequent keyword search across hundreds of sessions.

Best for: users who want a simple save solution and work primarily inside one platform.

Echoes — established paid suite with AI summaries

Echoes (by R2bits) is one of the more established tools here, with around 10,000 users and search across 7 platforms: ChatGPT, Claude, Gemini, Perplexity, AI Studio, DeepSeek, and Grok. Alongside fuzzy and boolean search it adds labels, bulk export, and an AI assistant that can summarise across your history.

The trade-offs are worth knowing. The AI assistant is capped at 50 queries per month on the free tier, and its best features sit behind a paid plan that adds an account and cross-device sync through Echoes' servers. Your conversation content stays in the browser, but the paid sync layer routes metadata off-device.

Best for: users who want a feature-rich paid suite and don't mind signing in. See the full LLMnesia vs Echoes comparison.

Chat Lens — broad coverage with a prompt library

Chat Lens is a local-first, search-first extension that claims the widest coverage on this list, 18+ AI platforms, and bundles a prompt library, keyword bookmarks, and beta duplicate-question detection. It is a close peer to LLMnesia; the difference is feature breadth versus a lean, automatic retrieval focus.

Best for: users who want maximum platform coverage plus a prompt library. See the full LLMnesia vs Chat Lens comparison.

ChatEngram — local-first with Obsidian and Notion export

ChatEngram auto-captures chats across ChatGPT, Claude, Gemini, DeepSeek, and Perplexity in real time, stores them in your browser's local database, and offers global search via Cmd/Ctrl+K. Its standout is export: one-click Markdown to Obsidian, Notion, and Google Drive. It is newer and smaller than the tools above, but the export angle suits note-takers who want their AI history inside an existing knowledge base.

Best for: Obsidian or Notion users who want their AI chats exported into their notes.

Personal AI Memory — open-source and fully local

Personal AI Memory silently auto-captures conversations from Claude, ChatGPT, Gemini, Perplexity, and Grok into local IndexedDB storage, with full-text search and nothing leaving your device. It is free, open-source with code on GitHub, and deliberately minimal. It is early and small, but a reasonable pick if auditability and a no-frills local approach matter to you.

Best for: privacy-minded users who want a free, open-source, fully local option.

ChatHub — multi-model comparison, not history

ChatHub is often mentioned alongside history extensions but serves a different purpose entirely. It lets you prompt ChatGPT, Claude, and Gemini simultaneously in a side-by-side view.

ChatHub has no built-in conversation history indexing. It is the right tool for real-time model comparison, not for recovering past sessions.

Best for: teams benchmarking models or comparing responses to the same prompt.

Promptly — prompt templates, not conversation history

Promptly manages reusable prompt templates. If your workflow requires standardized prompts across a team, it is worth evaluating. It does not address the problem of lost AI answers.

Best for: teams that need a shared prompt library, not users looking to search past conversations.

Choosing the right extension for your workflow

The most common mistake

Users often install a save extension and assume that solves the retrieval problem. It doesn't — not at scale. Saving creates files. Finding requires a search index.

If you regularly spend time trying to locate a specific AI answer, the bottleneck is retrieval, not storage. That is the distinction worth optimising for.